Publications

2019
Heller, K-G; Hemp, C; Massa, B; Rakotondranary, J; Krištín, A Notes on a small collection of phaneropterine bush-crickets (Insecta: Orthoptera: Tettigonioidea) from Central and Southern Madagascar with the description of two new species Journal Article Zootaxa, 4563 (2), pp. 297–310, 2019. BibTeX @article{Heller2019, title = {Notes on a small collection of phaneropterine bush-crickets (Insecta: Orthoptera: Tettigonioidea) from Central and Southern Madagascar with the description of two new species}, author = {K-G Heller and C Hemp and B Massa and J Rakotondranary and A Krištín}, year = {2019}, date = {2019-04-16}, journal = {Zootaxa}, volume = {4563}, number = {2}, pages = {297–310}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
2018
Iorgu, I S; Krištín, A; Szövényi, G; Kaňuch, P; Jarčuška, B; Sahlean, T; Iorgu, E I; Orci, K M Distinctive male–female acoustic duetting supports the specific status of Isophya fatrensis, a West-Carpathian endemic bush-cricket (Insecta: Orthoptera: Tettigoniidae: Phaneropterinae) Journal Article Bioacoustics , pp. 1-14, 2018. Links \| BibTeX @article{IORGU2017, title = {Distinctive male–female acoustic duetting supports the specific status of \textit{Isophya fatrensis}, a West-Carpathian endemic bush-cricket (Insecta: Orthoptera: Tettigoniidae: Phaneropterinae)}, author = {I.S. Iorgu and A. Krištín and G. Szövényi and P. Kaňuch and B. Jarčuška and T. Sahlean and E.I. Iorgu and K.M. Orci}, url = {http://www.tandfonline.com/doi/abs/10.1080/09524622.2016.1272005?journalCode=tbio20}, doi = {DOI: 10.1080/09524622.2016.1272005 }, year = {2018}, date = {2018-02-01}, journal = {Bioacoustics }, pages = {1-14}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.tandfonline.com/doi/abs/10.1080/09524622.2016.1272005?journalCode=tbi[...] doi:DOI: 10.1080/09524622.2016.1272005 Close
2017
Nusová, G; Šemeláková, M; Paučulová, L; Uhrin, M; Kaňuch, Peter Haplotype diversity in common pipistrelle’s mass hibernacula from central Europe Journal Article Biologia (Bratislava), 72 (5), pp. 548-553, 2017, ISSN: 1336-9563. Abstract \| Links \| BibTeX @article{Nusová2017, title = {Haplotype diversity in common pipistrelle’s mass hibernacula from central Europe}, author = {G. Nusová and M. Šemeláková and L. Paučulová and M. Uhrin and Peter Kaňuch}, url = {https://www.degruyter.com/view/j/biolog.2017.72.issue-5/biolog-2017-0061/biolog-2017-0061.xml}, doi = {https://doi.org/10.1515/biolog-2017-0061}, issn = {1336-9563}, year = {2017}, date = {2017-05-30}, journal = {Biologia (Bratislava)}, volume = {72}, number = {5}, pages = {548-553}, abstract = {Mass hibernacula of several tens of thousands of Pipistrellus pipistrellus associated with the swarming of bats during seasonal movements should serve as important sites of gene flow in this species. The massive occurrence of hibernating bats which is observed in few caves in the Carpathian Mountains encourages the idea that the genetic diversity at these sites will be greater comparing to known situation in surrounding region. This study aimed to determine the genetic diversity of individuals that aggregate in two such caves in Slovakia and Romania with the help of a common and available genetic marker. Using an mtDNA cytochrome b, 571 bp long fragment, very low haplotype diversity was found within both mass hibernacula of P. pipistrellus (15 haplotypes only, from which one significantly predominated with > 80% in both caves). The initial screening did not suggest that hibernating bats migrated to mass hibernacula from remote areas behind central European region. However, reliable study of the species’ migratory behaviour is required to understand more about the phenomenon of the mass hibernacula of these bats.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Mass hibernacula of several tens of thousands of Pipistrellus pipistrellus associated with the swarming of bats during seasonal movements should serve as important sites of gene flow in this species. The massive occurrence of hibernating bats which is observed in few caves in the Carpathian Mountains encourages the idea that the genetic diversity at these sites will be greater comparing to known situation in surrounding region. This study aimed to determine the genetic diversity of individuals that aggregate in two such caves in Slovakia and Romania with the help of a common and available genetic marker. Using an mtDNA cytochrome b, 571 bp long fragment, very low haplotype diversity was found within both mass hibernacula of P. pipistrellus (15 haplotypes only, from which one significantly predominated with > 80% in both caves). The initial screening did not suggest that hibernating bats migrated to mass hibernacula from remote areas behind central European region. However, reliable study of the species’ migratory behaviour is required to understand more about the phenomenon of the mass hibernacula of these bats. Close https://www.degruyter.com/view/j/biolog.2017.72.issue-5/biolog-2017-0061/biolog-[...] doi:https://doi.org/10.1515/biolog-2017-0061 Close
Kaňuch, P; Dorková, M; Mikhailenko, A P; Polumordvinov, O A; Jarčuška, B; Krištín, A Isolated populations of the bush-cricket Pholidoptera frivaldszkyi (Orthoptera, Tettigoniidae) in Russia suggest a disjunct area of the species distribution Journal Article ZooKeys, 665 , pp. 85-92, 2017. Abstract \| Links \| BibTeX @article{P.2017, title = {Isolated populations of the bush-cricket \textit{Pholidoptera frivaldszkyi} (Orthoptera, Tettigoniidae) in Russia suggest a disjunct area of the species distribution}, author = {P. Kaňuch and M. Dorková and A.P. Mikhailenko and O.A. Polumordvinov and B. Jarčuška and A. Krištín}, editor = {Z.F. Montealegre}, url = {https://zookeys.pensoft.net/article/12339/list/8/}, doi = {10.3897/zookeys.665.12339}, year = {2017}, date = {2017-04-04}, journal = {ZooKeys}, volume = {665}, pages = {85-92}, abstract = {Phylogenetic analysis and assessment of the species status of mostly isolated populations of Pholidoptera frivaldszkyi in south-western Russia occurring far beyond the accepted area of the species distribution in the Carpathian-Balkan region were performed. Using the mitochondrial DNA cytochrome c oxidase subunit I gene fragment, we found a very low level of genetic diversity in these populations. Phylogeographic reconstruction did not support recent introduction events but rather historical range fragmentation. The grouping of the Russian and Romanian haplotypes in a distinct phylogenetic clade suggests that the pre-glacial range of P. frivaldszkyi had extended towards the Ponto-Caspian region, with considerable gene flow between different refugia. However, post-glacial northward expansion of the species from supposed Caucasus refugia contributed most likely to the current disjunct distribution of this relict-like bush-cricket.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Phylogenetic analysis and assessment of the species status of mostly isolated populations of Pholidoptera frivaldszkyi in south-western Russia occurring far beyond the accepted area of the species distribution in the Carpathian-Balkan region were performed. Using the mitochondrial DNA cytochrome c oxidase subunit I gene fragment, we found a very low level of genetic diversity in these populations. Phylogeographic reconstruction did not support recent introduction events but rather historical range fragmentation. The grouping of the Russian and Romanian haplotypes in a distinct phylogenetic clade suggests that the pre-glacial range of P. frivaldszkyi had extended towards the Ponto-Caspian region, with considerable gene flow between different refugia. However, post-glacial northward expansion of the species from supposed Caucasus refugia contributed most likely to the current disjunct distribution of this relict-like bush-cricket. Close https://zookeys.pensoft.net/article/12339/list/8/ doi:10.3897/zookeys.665.12339 Close
Krištín, A; Kaňuch, P Stay or go? Strong winter feeding site fidelity in small woodland passerines revealed by a homing experiment. Journal Article Journal of Ornithology, 158 (1), pp. 53-61, 2017, ISSN: 0021-8375. Abstract \| Links \| BibTeX @article{KRIŠTÍN2017, title = {Stay or go? Strong winter feeding site fidelity in small woodland passerines revealed by a homing experiment. }, author = {A. Krištín and P. Kaňuch}, url = {https://link.springer.com/article/10.1007/s10336-016-1362-2}, doi = {https://doi.org/10.1007/s10336-016-1362-2}, issn = {0021-8375}, year = {2017}, date = {2017-01-01}, journal = {Journal of Ornithology}, volume = {158}, number = {1}, pages = {53-61}, abstract = {Many birds exhibit territoriality, which is vital for obtaining resources for survival. Non-migratory birds maintain larger territories in winter than during reproduction, but the degree of their fidelity to these winter home ranges is less well-known. We evaluated the homing success and time of return to home through a field experiment in which we trapped and displaced 1239 individual birds of two tit species, Great Tit (Parus major) and Blue Tit (Cyanistes caeruleus), and retrapped 267 of them over two winters (a total of 40 trapping sessions). Displacement of the birds between two sites 7.8 km apart revealed strong fidelity to the winter home range in both species; birds returned on average within 4 weeks. Greater homing success was found in Blue Tits than in Great Tits (45.7 vs. 32.5 % retraps). More individuals returned home from an ecotone site, which included gardens with feeders, than from a forest site (40.9 vs. 29.2 %). Blue Tits homed approximately 1 week more quickly than Great Tits, and similar mean differences were observed when comparing males with females of both species using Kaplar–Meier survival functions. A parametric survival regression model indicated that the difference in homing time between species was not significant, but males of both species returned significantly sooner than females. Moreover, birds that originated from a site with greater food supply homed more quickly, and interaction of sex and site also showed a significant effect in this model. Our evidence suggests that winter territoriality of these woodland passerines is shaped potentially by all tested factors and is an important behavioural characteristic linked with their ability to find limited resources during the harsh period of the year.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Many birds exhibit territoriality, which is vital for obtaining resources for survival. Non-migratory birds maintain larger territories in winter than during reproduction, but the degree of their fidelity to these winter home ranges is less well-known. We evaluated the homing success and time of return to home through a field experiment in which we trapped and displaced 1239 individual birds of two tit species, Great Tit (Parus major) and Blue Tit (Cyanistes caeruleus), and retrapped 267 of them over two winters (a total of 40 trapping sessions). Displacement of the birds between two sites 7.8 km apart revealed strong fidelity to the winter home range in both species; birds returned on average within 4 weeks. Greater homing success was found in Blue Tits than in Great Tits (45.7 vs. 32.5 % retraps). More individuals returned home from an ecotone site, which included gardens with feeders, than from a forest site (40.9 vs. 29.2 %). Blue Tits homed approximately 1 week more quickly than Great Tits, and similar mean differences were observed when comparing males with females of both species using Kaplar–Meier survival functions. A parametric survival regression model indicated that the difference in homing time between species was not significant, but males of both species returned significantly sooner than females. Moreover, birds that originated from a site with greater food supply homed more quickly, and interaction of sex and site also showed a significant effect in this model. Our evidence suggests that winter territoriality of these woodland passerines is shaped potentially by all tested factors and is an important behavioural characteristic linked with their ability to find limited resources during the harsh period of the year. Close https://link.springer.com/article/10.1007/s10336-016-1362-2 doi:https://doi.org/10.1007/s10336-016-1362-2 Close
Naďo, L; Chromá, R; Kaňuch, P Structural, temporal and genetic properties of social groups in the short-lived migratory bat Nyctalus leisleri Journal Article Behaviour, 154 (7-8), pp. 785-807, 2017, ISSN: 0005-7959. Abstract \| Links \| BibTeX @article{Naďo2017, title = {Structural, temporal and genetic properties of social groups in the short-lived migratory bat \textit{Nyctalus leisleri}}, author = {L. Naďo and R. Chromá and P. Kaňuch}, doi = { 10.1163/1568539X-00003444 }, issn = { 0005-7959}, year = {2017}, date = {2017-01-01}, journal = {Behaviour}, volume = {154}, number = {7-8}, pages = {785-807}, abstract = {Social groups of bats that operate under fission–fusion dynamics tend to establish and maintain non-random associations. We examined the social and genetic structure of the Leisler’s bat (Nyctalus leisleri), a species that is typical of tree-dwelling and long-distance migratory species in Europe. We used long-term co-occurrence data (capture-recapture sampling of roosting individuals) in combination with individual genetic relatedness (inferred from a set of microsatellite markers) to assess relationships between structural, temporal and genetic properties of roosting groups. Our results showed that social structure in groups of roosting Leisler’s bat was not random. Social clusters revealed by network analysis were almost identical to demographic cohorts, which indicates that Leisler’s bats are able to maintain social bonds only over a single season. After the period of active maternal care, roosting groups became smaller with a significantly higher level of genetic relatedness among adult females in contrast to the pregnancy and lactation stages. This provides some evidence that temporal social associations may be positively correlated with genetic relatedness. Low recapture rates of bats across seasons in light of natal philopatry indicates a shorter life span of individuals likely due to high mortality during long distance migratory movements. This probably has the most significant effect on the social system of this species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Social groups of bats that operate under fission–fusion dynamics tend to establish and maintain non-random associations. We examined the social and genetic structure of the Leisler’s bat (Nyctalus leisleri), a species that is typical of tree-dwelling and long-distance migratory species in Europe. We used long-term co-occurrence data (capture-recapture sampling of roosting individuals) in combination with individual genetic relatedness (inferred from a set of microsatellite markers) to assess relationships between structural, temporal and genetic properties of roosting groups. Our results showed that social structure in groups of roosting Leisler’s bat was not random. Social clusters revealed by network analysis were almost identical to demographic cohorts, which indicates that Leisler’s bats are able to maintain social bonds only over a single season. After the period of active maternal care, roosting groups became smaller with a significantly higher level of genetic relatedness among adult females in contrast to the pregnancy and lactation stages. This provides some evidence that temporal social associations may be positively correlated with genetic relatedness. Low recapture rates of bats across seasons in light of natal philopatry indicates a shorter life span of individuals likely due to high mortality during long distance migratory movements. This probably has the most significant effect on the social system of this species. Close doi: 10.1163/1568539X-00003444 Close
Uhrin, M; Benda, P; Kaňuch, P Different responses of attic-dwelling bat species to landscape naturalness Journal Article Mammalian Biology - Zeitschrift für Säugetierkunde, 82 , pp. 48-56, 2017, ISSN: 1616-5047. Abstract \| Links \| BibTeX @article{Uhrin2017, title = {Different responses of attic-dwelling bat species to landscape naturalness}, author = {M. Uhrin and P. Benda and P. Kaňuch}, url = {http://www.sciencedirect.com/science/article/pii/S1616504716301458}, doi = {https://doi.org/10.1016/j.mambio.2016.10.001}, issn = {1616-5047}, year = {2017}, date = {2017-01-01}, journal = {Mammalian Biology - Zeitschrift für Säugetierkunde}, volume = {82}, pages = {48-56}, abstract = {Although the general role of bats and the tolerance of many species to urbanized areas is well known, the relationship between urban roosts and their surrounding landscapes having different degrees of naturalness still requires our attention, mainly in species that are the most adapted to human-made structures. We used extensive data from attic-dwelling bat surveillance conducted throughout Slovakia to assess species responses to the degree of naturalness of the landscape surrounding their anthropogenic roosts. Using generalized linear mixed-effects modelling, we found that some bats established their nursery colonies in either a habitat with a higher proportion of forests mostly at sub-mountain/mountain altitudes (R. hipposideros, P. auritus, M. emarginatus), or they preferred lowlands with a predominance of arable land (E. serotinus, P. austriacus). Furthermore, higher habitat heterogeneity and the proportion of grassland were positively associated with the occurrence of P. auritus; however, negative associations with these habitat variables were found in E. serotinus. The predicted suitability of an area for bats to establish nursery colonies suggests the existence of two regions with different bat species composition in the study area: a region of the Pannonian Lowlands and a less urbanized mountain region of the Carpathian Mountains. Our study thus showed that landscape naturalness is a determining factor for roost-site selection by bats preferring anthropogenic roosts; however, some bat species did not express specific preferences according to the tested environmental variables, and other ecological traits in the evaluated species should be considered.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Although the general role of bats and the tolerance of many species to urbanized areas is well known, the relationship between urban roosts and their surrounding landscapes having different degrees of naturalness still requires our attention, mainly in species that are the most adapted to human-made structures. We used extensive data from attic-dwelling bat surveillance conducted throughout Slovakia to assess species responses to the degree of naturalness of the landscape surrounding their anthropogenic roosts. Using generalized linear mixed-effects modelling, we found that some bats established their nursery colonies in either a habitat with a higher proportion of forests mostly at sub-mountain/mountain altitudes (R. hipposideros, P. auritus, M. emarginatus), or they preferred lowlands with a predominance of arable land (E. serotinus, P. austriacus). Furthermore, higher habitat heterogeneity and the proportion of grassland were positively associated with the occurrence of P. auritus; however, negative associations with these habitat variables were found in E. serotinus. The predicted suitability of an area for bats to establish nursery colonies suggests the existence of two regions with different bat species composition in the study area: a region of the Pannonian Lowlands and a less urbanized mountain region of the Carpathian Mountains. Our study thus showed that landscape naturalness is a determining factor for roost-site selection by bats preferring anthropogenic roosts; however, some bat species did not express specific preferences according to the tested environmental variables, and other ecological traits in the evaluated species should be considered. Close http://www.sciencedirect.com/science/article/pii/S1616504716301458 doi:https://doi.org/10.1016/j.mambio.2016.10.001 Close
2016
Jarčuška, B; Slezák, M; Hrivnák, R; Senko, D Invasibility of alien Impatiens parviflora in temperate forest understories Journal Article Flora, 224 , pp. 14–23, 2016. Abstract \| Links \| BibTeX @article{Jarčuška2016, title = {Invasibility of alien Impatiens parviflora in temperate forest understories}, author = {B. Jarčuška and M. Slezák and R. Hrivnák and D. Senko}, url = {http://www.sciencedirect.com/science/article/pii/S0367253016300937}, year = {2016}, date = {2016-12-31}, journal = {Flora}, volume = {224}, pages = {14–23}, abstract = {Closed-canopy forests had been assumed to be a highly resistant to plant invasions but recently it has been found that several invasive plants are also effectively adapted to shaded forest understories. One of them is small balsam, Impatiens parviflora, one of the most widespread invasive plants occurring in temperate and northern regions of Europe. Certain discrepancies in autecology of small balsam or in its interaction with native species in invaded communities have been published previously. These can be accounted for by habitat-related biases (e.g., restricted length of analysed environmental gradients), size of sampling units and geographical range of sampling. Therefore to achieve better insight into the success of small balsam, we used dataset of vegetation plots from various types of temperate forests in Western Carpathians, Slovakia. To identify principle environmental and vegetation-related determinants controlling cover values of small balsam in temperate forests, and to model small balsam’s response to particular gradients, we used Boosted Regression Trees (BRT), technique that can model complex curvilinear relationships and their interactions. While additive BRT-model accounted for 24.1% of variation in small balsam cover, model with up to five-way interactions explained 46.0%. Nutrients (Ellenberg indicator value) were the most influential predictor accounting for 21.6% of variance. We observed only weak negative association between herb-layer species richness and cover of small balsam. The highest cover of small balsam was observed at nutrient-richest sites, along with lowest summarised cover of other species in herb layer. Trade-offs between mean annual precipitation and nutrients were also observed for cover of small balsam; species cover was higher at nutrient-poorer sites that received lower mean annual precipitation, while opposite was true for nutrient rich sites. The present work is the first study showing the positive association between nutrients availability and small balsam cover in forest understories, at a large spatial scale.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Closed-canopy forests had been assumed to be a highly resistant to plant invasions but recently it has been found that several invasive plants are also effectively adapted to shaded forest understories. One of them is small balsam, Impatiens parviflora, one of the most widespread invasive plants occurring in temperate and northern regions of Europe. Certain discrepancies in autecology of small balsam or in its interaction with native species in invaded communities have been published previously. These can be accounted for by habitat-related biases (e.g., restricted length of analysed environmental gradients), size of sampling units and geographical range of sampling. Therefore to achieve better insight into the success of small balsam, we used dataset of vegetation plots from various types of temperate forests in Western Carpathians, Slovakia. To identify principle environmental and vegetation-related determinants controlling cover values of small balsam in temperate forests, and to model small balsam’s response to particular gradients, we used Boosted Regression Trees (BRT), technique that can model complex curvilinear relationships and their interactions. While additive BRT-model accounted for 24.1% of variation in small balsam cover, model with up to five-way interactions explained 46.0%. Nutrients (Ellenberg indicator value) were the most influential predictor accounting for 21.6% of variance. We observed only weak negative association between herb-layer species richness and cover of small balsam. The highest cover of small balsam was observed at nutrient-richest sites, along with lowest summarised cover of other species in herb layer. Trade-offs between mean annual precipitation and nutrients were also observed for cover of small balsam; species cover was higher at nutrient-poorer sites that received lower mean annual precipitation, while opposite was true for nutrient rich sites. The present work is the first study showing the positive association between nutrients availability and small balsam cover in forest understories, at a large spatial scale. Close http://www.sciencedirect.com/science/article/pii/S0367253016300937 Close
Karaska, D; Trnka, A; Krištín, A; Ridzoň, J Chránené vtáčie územia Slovenska Book Štátna ochrana prírody Slovenskej republiky, Banská Bystrica, 2016, ISBN: 978-80-89802-16-6. BibTeX @book{KARASKA2016, title = {Chránené vtáčie územia Slovenska}, author = {D. Karaska and A. Trnka and A. Krištín and J. Ridzoň}, editor = {D. Karaska and A. Trnka and A. Krištín and J. Ridzoň}, isbn = {978-80-89802-16-6}, year = {2016}, date = {2016-10-01}, publisher = {Štátna ochrana prírody Slovenskej republiky}, address = {Banská Bystrica}, keywords = {}, pubstate = {published}, tppubtype = {book} } Close
Krištín, A; Jarčuška, B Distribution and ecology of the flightless bush-cricket Poecilimon schmidtii at its northern range margin Journal Article Biologia, 71 (9), pp. 1049-1060, 2016. Abstract \| Links \| BibTeX @article{Krištín2016, title = {Distribution and ecology of the flightless bush-cricket Poecilimon schmidtii at its northern range margin}, author = {A. Krištín and B. Jarčuška}, url = {https://www.researchgate.net/publication/309281814_Distribution_and_ecology_of_the_flightless_bush-cricket_Poecilimon_schmidtii_at_its_northern_range_margin}, doi = {10.1515/biolog-2016-0128}, year = {2016}, date = {2016-09-01}, journal = {Biologia}, volume = {71}, number = {9}, pages = {1049-1060}, abstract = {The distributional patterns and ecology of the ponto-mediterranean species Poecilimon schmidtii were only insufficiently known until now, despite assumed to be one of the northernmost distributed species of the genus. Based on the review of all available published and own field data, we improved the distribution map of the species and recorded it for the first time from Poland. The distribution survey was carried at 1,208 sites in Slovakia, 39 sites in SE Poland and 26 sites in W Ukraine between 1994 and 2015. P. schmidtii was found at 59 sites and the habitat requirements were analysed. The results show a clear preference of the species for broadleaved forest ecotones with hazel and Rubus spp. shrubs being the main host plants. The species was present in grid cells with a lower mean altitude, a higher annual mean temperature and a lower annual precipitation compared to those available within the northern species’ range. Its altitudinal distribution was between 105 and 950 m a.s.l. Altogether, 70 Orthoptera and one mantid species were recorded and assemblages of Orthoptera and Mantodea were described for 49 sites with P. schmidtii in Slovakia and Poland. On average 18.9 ± 7.5 (SD) species were found per site, ranging from 7 to 37. Using detrended correspondence analysis it was not possible to distinguish between the orthopteran assemblages with and without (n = 94) P. schmidtii. In the assemblages, P. schmidtii was more often present with mountainous species. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The distributional patterns and ecology of the ponto-mediterranean species Poecilimon schmidtii were only insufficiently known until now, despite assumed to be one of the northernmost distributed species of the genus. Based on the review of all available published and own field data, we improved the distribution map of the species and recorded it for the first time from Poland. The distribution survey was carried at 1,208 sites in Slovakia, 39 sites in SE Poland and 26 sites in W Ukraine between 1994 and 2015. P. schmidtii was found at 59 sites and the habitat requirements were analysed. The results show a clear preference of the species for broadleaved forest ecotones with hazel and Rubus spp. shrubs being the main host plants. The species was present in grid cells with a lower mean altitude, a higher annual mean temperature and a lower annual precipitation compared to those available within the northern species’ range. Its altitudinal distribution was between 105 and 950 m a.s.l. Altogether, 70 Orthoptera and one mantid species were recorded and assemblages of Orthoptera and Mantodea were described for 49 sites with P. schmidtii in Slovakia and Poland. On average 18.9 ± 7.5 (SD) species were found per site, ranging from 7 to 37. Using detrended correspondence analysis it was not possible to distinguish between the orthopteran assemblages with and without (n = 94) P. schmidtii. In the assemblages, P. schmidtii was more often present with mountainous species. Close https://www.researchgate.net/publication/309281814_Distribution_and_ecology_of_t[...] doi:10.1515/biolog-2016-0128 Close
Nuhličková, S; Krištín, A; Degma, P; Hoi, H Variability in nestling diet of European hoopes: annual and sampling effect Journal Article Folia Zoologica, 65 (3), pp. 189-199, 2016. BibTeX @article{NUHLIČKOVÁ2016, title = {Variability in nestling diet of European hoopes: annual and sampling effect}, author = {S. Nuhličková and A. Krištín and P. Degma and H. Hoi}, year = {2016}, date = {2016-09-01}, journal = {Folia Zoologica}, volume = {65}, number = {3}, pages = {189-199}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Maxinová, E; Kipson, M; Naďo, L; Hradická, P; Uhrin, M Foraging strategy of Kuhl's pipistrelle at the northern edge of the species distribution Journal Article Acta Chiropterologica, 18 (1), pp. 215-222, 2016, ISSN: 1508-1109. Abstract \| Links \| BibTeX @article{Maxinová2016, title = {Foraging strategy of Kuhl's pipistrelle at the northern edge of the species distribution}, author = {E. Maxinová and M. Kipson and L. Naďo and P. Hradická and M. Uhrin}, url = {http://www.bioone.org/doi/abs/10.3161/15081109ACC2016.18.1.012}, doi = {https://doi.org/10.3161/15081109ACC2016.18.1.012}, issn = {1508-1109}, year = {2016}, date = {2016-01-01}, journal = {Acta Chiropterologica}, volume = {18}, number = {1}, pages = {215-222}, abstract = {Rapid range expansion of Kuhl’s pipistrelle (Pipistrellus kuhlii) has been observed throughout Europe, and in addition to its natural habitats of temperate grasslands and agricultural areas, the species is common in city centres, where it roosts in human-made structures. It has been suggested that the flexibility of this species in regard to different human-induced changes, such as climate change and urbanization, is responsible for the apparent range shift. Although P. kuhlii exhibits one of the highest degrees of synanthropy among bat species in Europe, its ecology has thus far not been thoroughly studied. This study aims to describe its foraging and roosting selection in Central Europe (eastern Slovakia), where the northernmost maternity colony of P. kuhlii roosts in human settlements. Radio-tracking was conducted during the pre-parturition and post-lactation periods. We identified six artificial roosts within the study area that were interlinked, with bats switching between them. Ten individuals were used for modelling foraging-habitat utilization, which revealed that bats were highly selective. The only habitat type that bats clearly preferred, regardless of season, was an urban illuminated area close to a river. Only slight avoidance — of open areas — was observed during the pre-parturition period.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Rapid range expansion of Kuhl’s pipistrelle (Pipistrellus kuhlii) has been observed throughout Europe, and in addition to its natural habitats of temperate grasslands and agricultural areas, the species is common in city centres, where it roosts in human-made structures. It has been suggested that the flexibility of this species in regard to different human-induced changes, such as climate change and urbanization, is responsible for the apparent range shift. Although P. kuhlii exhibits one of the highest degrees of synanthropy among bat species in Europe, its ecology has thus far not been thoroughly studied. This study aims to describe its foraging and roosting selection in Central Europe (eastern Slovakia), where the northernmost maternity colony of P. kuhlii roosts in human settlements. Radio-tracking was conducted during the pre-parturition and post-lactation periods. We identified six artificial roosts within the study area that were interlinked, with bats switching between them. Ten individuals were used for modelling foraging-habitat utilization, which revealed that bats were highly selective. The only habitat type that bats clearly preferred, regardless of season, was an urban illuminated area close to a river. Only slight avoidance — of open areas — was observed during the pre-parturition period. Close http://www.bioone.org/doi/abs/10.3161/15081109ACC2016.18.1.012 doi:https://doi.org/10.3161/15081109ACC2016.18.1.012 Close
Kaňuch, P; Naďo, L; Krištín, A A noteworthy record of Rhinolophus hipposideros nursery roost under a road bridge Journal Article Vespertilio, 18 , pp. 163-166, 2016, ISSN: 1213-6123. Abstract \| Links \| BibTeX @article{Kaňuch2016, title = {A noteworthy record of \textit{Rhinolophus hipposideros} nursery roost under a road bridge}, author = {P. Kaňuch and L. Naďo and A. Krištín}, url = {http://www.ceson.org/vespertilio/18/163_166_Kanuch.pdf}, issn = {1213-6123}, year = {2016}, date = {2016-01-01}, journal = {Vespertilio}, volume = {18}, pages = {163-166}, abstract = {In central Europe, roosts under road bridges are reported only rarely for few bat species. Under the concrete road bridge located close to the Hontianske Nemce village (central Slovakia), an abundant (up to 270 females) nursery colony of Rhinolophus hipposideros was found. Using infrared monitors, it was confirmed that the bats occurred in the roost permanently during the whole observed period (May – August 2015) while females gave births there at the end of June. It is the first roost of such type for this species recorded in central Europe and also the biggest colony of R. hipposideros known in the surrounding region.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close In central Europe, roosts under road bridges are reported only rarely for few bat species. Under the concrete road bridge located close to the Hontianske Nemce village (central Slovakia), an abundant (up to 270 females) nursery colony of Rhinolophus hipposideros was found. Using infrared monitors, it was confirmed that the bats occurred in the roost permanently during the whole observed period (May – August 2015) while females gave births there at the end of June. It is the first roost of such type for this species recorded in central Europe and also the biggest colony of R. hipposideros known in the surrounding region. Close http://www.ceson.org/vespertilio/18/163_166_Kanuch.pdf Close
Reif, J; Krištín, A; Kopsová, L; Devictor, V Linking habitat specialization with species' traits in European birds Journal Article Oikos, 125 (3), pp. 405-413, 2016. BibTeX @article{REIF2016, title = {Linking habitat specialization with species' traits in European birds}, author = {J. Reif and A. Krištín and L. Kopsová and V. Devictor}, year = {2016}, date = {2016-01-01}, journal = {Oikos}, volume = {125}, number = {3}, pages = {405-413}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Song, G; Zhang, R; Qu, Y; Wang, Z; Dong, L; Krištín, A; Alstrӧm, P; Ericson, P G P; Lambert, D M; Fjeldsa, J; Lei, Fu-Min A zoogeographical boundary between the Palaearctic and Sino-Japanese realms documentated by consistent north/south phylogeographical divergences in three woodland birds in eastern China Journal Article Journal of Biogeography, 43 (11), pp. 2099-2112, 2016, ISSN: 1365-2699. Abstract \| Links \| BibTeX @article{SONG2016, title = {A zoogeographical boundary between the Palaearctic and Sino-Japanese realms documentated by consistent north/south phylogeographical divergences in three woodland birds in eastern China}, author = {G. Song and R. Zhang and Y. Qu and Z. Wang and L. Dong and A. Krištín and P. Alstrӧm and P.G.P. Ericson and D.M. Lambert and J. Fjeldsa and Fu-Min Lei}, url = {http://onlinelibrary.wiley.com/doi/10.1111/jbi.12758/full}, doi = {10.1111/jbi.12758}, issn = {1365-2699}, year = {2016}, date = {2016-01-01}, journal = {Journal of Biogeography}, volume = {43}, number = {11}, pages = {2099-2112}, abstract = {The location of zoogeographical boundaries in eastern China has long been the subject of debate. To identify any north/south genetic divergence between the Palaearctic and Sino-Japanese realms proposed by previous studies, we conducted a comparative phylogeographical study involving three passerine species with wide latitudinal distributions in eastern China.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The location of zoogeographical boundaries in eastern China has long been the subject of debate. To identify any north/south genetic divergence between the Palaearctic and Sino-Japanese realms proposed by previous studies, we conducted a comparative phylogeographical study involving three passerine species with wide latitudinal distributions in eastern China. Close http://onlinelibrary.wiley.com/doi/10.1111/jbi.12758/full doi:10.1111/jbi.12758 Close
Dorková, M; Kocianová-Adamcová, M; Pristaš, P; Klinga, P Phylogenetic status of endemic Chionomys nivalis mirhanreini in the Western Carpathians. Journal Article Folia Oecologica, 43 (1), pp. 3-11, 2016. Abstract \| Links \| BibTeX @article{Dorková2016, title = {Phylogenetic status of endemic \textit{Chionomys nivalis mirhanreini} in the Western Carpathians.}, author = {M. Dorková and M. Kocianová-Adamcová and P. Pristaš and P. Klinga}, url = {https://ife.sk/2016_dorkova/}, year = {2016}, date = {2016-01-01}, journal = {Folia Oecologica}, volume = {43}, number = {1}, pages = {3-11}, abstract = {The Snow vole has a fragmented distribution restricted to the mountain and rocky regions from the southwestern Europe to the Caucasus and the Middle East. Several subspecies have been described on the basis of dental characters. In this study we provide more detail insight into phylogenetic status of the Snow vole Chionomys nivalis occurring in the Western Carpathians compared to its populations within Eurasia. We analysed 588 bp fragment of mtDNA cytochrome b gene in samples collected in the two isolated populations within the High Tatras and Low Tatras Mountains. Our results indicate Western Carpathians as the long term isolated refugia for C. nivalis and support the subspecies status of C. n. mirhanreini in the Western Carpathians. The European populations are formed by two southern phylogenetic lineages – the first originates in Iberian Peninsula and the other expanding from Balkans to the Eastern Carpathians is also visible }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The Snow vole has a fragmented distribution restricted to the mountain and rocky regions from the southwestern Europe to the Caucasus and the Middle East. Several subspecies have been described on the basis of dental characters. In this study we provide more detail insight into phylogenetic status of the Snow vole Chionomys nivalis occurring in the Western Carpathians compared to its populations within Eurasia. We analysed 588 bp fragment of mtDNA cytochrome b gene in samples collected in the two isolated populations within the High Tatras and Low Tatras Mountains. Our results indicate Western Carpathians as the long term isolated refugia for C. nivalis and support the subspecies status of C. n. mirhanreini in the Western Carpathians. The European populations are formed by two southern phylogenetic lineages – the first originates in Iberian Peninsula and the other expanding from Balkans to the Eastern Carpathians is also visible Close https://ife.sk/2016_dorkova/ Close
Lešo, P; Lešová, A; Kropil, R; Kaňuch, P Response of the dominant rodent species to close-to-nature logging practices in a temperate mixed forest Journal Article Annals of Forest Research, 59 (2), pp. 259-268, 2016. Abstract \| Links \| BibTeX @article{Lešo2016, title = {Response of the dominant rodent species to close-to-nature logging practices in a temperate mixed forest}, author = {P. Lešo and A. Lešová and R. Kropil and P. Kaňuch}, doi = {10.15287/afr.2016.620}, year = {2016}, date = {2016-01-01}, journal = {Annals of Forest Research}, volume = {59}, number = {2}, pages = {259-268}, abstract = {The paper aims to answer the question whether differences exist in microhabitat preferences of the yellow-necked mouse and the bank vole between the natural forest and close-to-nature managed forest in the phase of stand regeneration. The two species were live-trapped during two periods in 2006 and 2007 on a square trapping grid established in a managed forest and a natural one. Ten microhabitat variables of each trapping point were measured to analyse their influence on the spatial distribution of the two species. At trapping points, the number of capture records for each species as a dependent variable was modelled using Generalised Linear Models. The herbal cover and a distance to the nearest woody debris were the most important measured microhabitat variables which affect the spatial distribution of both species. In the natural forest, the number of captures in both species increased significantly (p < 0.05) with a decreasing number of trees, increasing undergrowth coverage and decreasing distance to the nearest woody debris. In the managed forest, an increasing distance to the nearest tree and increasing herbal cover had a negative effect on the yellow-necked mouse occurrence (p < 0.001), while in contrast, the increase in values of the same variables increased frequency of occurrence of the bank vole (p < 0.001). Moreover, the bank vole was more frequent in the presence of woody debris (p < 0.002). The study demonstrated clearly that these species modify their spatial activity depending on the management of the woodland.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The paper aims to answer the question whether differences exist in microhabitat preferences of the yellow-necked mouse and the bank vole between the natural forest and close-to-nature managed forest in the phase of stand regeneration. The two species were live-trapped during two periods in 2006 and 2007 on a square trapping grid established in a managed forest and a natural one. Ten microhabitat variables of each trapping point were measured to analyse their influence on the spatial distribution of the two species. At trapping points, the number of capture records for each species as a dependent variable was modelled using Generalised Linear Models. The herbal cover and a distance to the nearest woody debris were the most important measured microhabitat variables which affect the spatial distribution of both species. In the natural forest, the number of captures in both species increased significantly (p < 0.05) with a decreasing number of trees, increasing undergrowth coverage and decreasing distance to the nearest woody debris. In the managed forest, an increasing distance to the nearest tree and increasing herbal cover had a negative effect on the yellow-necked mouse occurrence (p < 0.001), while in contrast, the increase in values of the same variables increased frequency of occurrence of the bank vole (p < 0.001). Moreover, the bank vole was more frequent in the presence of woody debris (p < 0.002). The study demonstrated clearly that these species modify their spatial activity depending on the management of the woodland. Close doi:10.15287/afr.2016.620 Close
2015
Naďo, L; Kaňuch, P Swarming behaviour associated with group cohesion in tree-dwelling bats Journal Article Behavioural Processes, 120 , pp. 80–86, 2015, ISSN: 0376-6357. Abstract \| Links \| BibTeX @article{L.2015, title = {Swarming behaviour associated with group cohesion in tree-dwelling bats}, author = {L. Naďo and P. Kaňuch}, url = {http://www.sciencedirect.com/science/article/pii/S0376635715300358}, doi = {https://doi.org/10.1016/j.beproc.2015.09.005}, issn = {0376-6357}, year = {2015}, date = {2015-11-01}, journal = {Behavioural Processes}, volume = {120}, pages = {80–86}, abstract = {Group living of social species increases the individual survival rate and enhances optimal exploitation of resources within their environment. Groups of cryptic tree-dwelling bats perform frequent roost switching on relatively long distances, whereas groups are temporarily disintegrated during foraging that precedes moving into new roost. In this study, we attempted to elucidate a mechanism in which group members can select new roost from a large set of potential roosting sites without disintegration of the whole group. Exploring the activity at the front of the tree hollows, recorded by automatic infrared monitors, we found that the swarming activity of Leisler’s bats was performed during the whole night and was concentrated before the civil twilight at occupied roosts. A generalized linear model revealed significant positive association between the group size and swarming activity while season had negative but smaller effect. As bats swarmed the whole night also at sites that were less occupied or even unoccupied, we suggest that members of a bat colony selected new roost from a potentially larger set of available roosting sites. Thus, we propose a possible signalling role of swarming as a threshold behaviour that ensures group cohesion during roost switching.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Group living of social species increases the individual survival rate and enhances optimal exploitation of resources within their environment. Groups of cryptic tree-dwelling bats perform frequent roost switching on relatively long distances, whereas groups are temporarily disintegrated during foraging that precedes moving into new roost. In this study, we attempted to elucidate a mechanism in which group members can select new roost from a large set of potential roosting sites without disintegration of the whole group. Exploring the activity at the front of the tree hollows, recorded by automatic infrared monitors, we found that the swarming activity of Leisler’s bats was performed during the whole night and was concentrated before the civil twilight at occupied roosts. A generalized linear model revealed significant positive association between the group size and swarming activity while season had negative but smaller effect. As bats swarmed the whole night also at sites that were less occupied or even unoccupied, we suggest that members of a bat colony selected new roost from a potentially larger set of available roosting sites. Thus, we propose a possible signalling role of swarming as a threshold behaviour that ensures group cohesion during roost switching. Close http://www.sciencedirect.com/science/article/pii/S0376635715300358 doi:https://doi.org/10.1016/j.beproc.2015.09.005 Close
Hrivnák, R; Slezák, M; Jarčuška, B; Jarolímek, I; Kochjarová, J Native and alien plant species richness response to soil nitrogen and phosphorus in temperate floodplain and swamp forests Journal Article Forests, 6 (10), pp. 3501-3513, 2015. Abstract \| Links \| BibTeX @article{Hrivnák2015, title = {Native and alien plant species richness response to soil nitrogen and phosphorus in temperate floodplain and swamp forests}, author = {R. Hrivnák and M. Slezák and B. Jarčuška and I. Jarolímek and J. Kochjarová}, url = {http://www.mdpi.com/1999-4907/6/10/3501}, year = {2015}, date = {2015-10-07}, journal = {Forests}, volume = {6}, number = {10}, pages = {3501-3513}, abstract = {Soil nitrogen and phosphorus are commonly limiting elements affecting plant species richness in temperate zones. Our species richness-ecological study was performed in alder-dominated forests representing temperate floodplains (streamside alder forests of Alnion incanae alliance) and swamp forests (alder carrs of Alnion glutinosae alliance) in the Western Carpathians. Species richness (i.e., the number of vascular plants in a vegetation plot) was analyzed separately for native and alien vascular plants in 240 vegetation plots across the study area covering Slovakia, northern Hungary and southern Poland. The relationship between the species richness of each plant group and total soil nitrogen content, plant-available phosphorus and carbon to nitrogen (C/N) ratio was analyzed by generalized linear mixed models (GLMM) with Poisson error distribution and log-link function. The number of recorded native and alien species was 17–84 (average 45.4) and 0–9 (average 1.5) species per plot, respectively. The GLMMs were statistically significant (p ˂ 0.001) for both plant groups, but the total explained variation was higher for native (14%) than alien plants (9%). The richness of native species was negatively affected by the total soil nitrogen content and plant-available phosphorus, whereas the C/N ratio showed a positive impact. The alien richness was predicted only by the total soil nitrogen content showing a negative effect. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Soil nitrogen and phosphorus are commonly limiting elements affecting plant species richness in temperate zones. Our species richness-ecological study was performed in alder-dominated forests representing temperate floodplains (streamside alder forests of Alnion incanae alliance) and swamp forests (alder carrs of Alnion glutinosae alliance) in the Western Carpathians. Species richness (i.e., the number of vascular plants in a vegetation plot) was analyzed separately for native and alien vascular plants in 240 vegetation plots across the study area covering Slovakia, northern Hungary and southern Poland. The relationship between the species richness of each plant group and total soil nitrogen content, plant-available phosphorus and carbon to nitrogen (C/N) ratio was analyzed by generalized linear mixed models (GLMM) with Poisson error distribution and log-link function. The number of recorded native and alien species was 17–84 (average 45.4) and 0–9 (average 1.5) species per plot, respectively. The GLMMs were statistically significant (p ˂ 0.001) for both plant groups, but the total explained variation was higher for native (14%) than alien plants (9%). The richness of native species was negatively affected by the total soil nitrogen content and plant-available phosphorus, whereas the C/N ratio showed a positive impact. The alien richness was predicted only by the total soil nitrogen content showing a negative effect. Close http://www.mdpi.com/1999-4907/6/10/3501 Close
Naďo, L; Kaňuch, P Roost site selection by tree-dwelling bats across biogeographical regions: an updated meta-analysis with meta-regression. Journal Article Mammal Review, 45 (4), pp. 215–226, 2015, ISSN: 1365-2907. Abstract \| Links \| BibTeX @article{L.2015b, title = {Roost site selection by tree-dwelling bats across biogeographical regions: an updated meta-analysis with meta-regression.}, author = {L. Naďo and P. Kaňuch}, url = {http://onlinelibrary.wiley.com/doi/10.1111/mam.12044/abstract}, doi = {10.1111/mam.12044}, issn = {1365-2907}, year = {2015}, date = {2015-08-18}, journal = {Mammal Review}, volume = {45}, number = {4}, pages = {215–226}, abstract = {1. Bats roosting in tree cavities, under loose bark or just on branches in foliage, so-called tree-dwelling bats, are a very diverse and abundant group of species. Although they can be very different species with locally distinct needs, radical exploitation of forest habitats and global changes have meant that many of them are regionally endangered and survive today only in small populations. To help develop appropriate conservation policies and management plans, much research in recent decades has been focussed on inferring habitat selection by tree-dwelling bats. However, large variability in the reported selection patterns makes it difficult to suggest some more-or-less universal and easily applicable management recommendations, also for regions in which nature conservation awareness is low. 2. We created a meta-analytic model to explore selection patterns at a global scale. Phylogenetic relationships among species and additional variables were included to explain discrepancies between studies. 3. A meta-analytic model showed that bats are selecting trees with trunk diameters that are larger than those of randomly selected trees, and this pattern is consistent within each biogeographical region. However, meta-regression revealed that the detectability of the selection depends strongly on the structural variability within the study environment (size of randomly selected or surrounding trees in forest stands, forest fragmentation, habitat disturbance) and on the methodological approach that has been applied (the length of the study). We found stronger selection for larger trees in non-fragmented and less disturbed forests than in fragmented forests with high habitat disturbance, and, strikingly, short-term studies yielded results with stronger selection than long-term studies. 4. Our results suggest that patterns of roosting habitat selection by bats may be overestimated in some studies. In conclusion, we propose that further research should be conducted in all types of forest ecosystem (data from the tropics are currently missing). Future studies should include at least three years of data collection, in order to avoid estimation bias in habitat selection patterns.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close 1. Bats roosting in tree cavities, under loose bark or just on branches in foliage, so-called tree-dwelling bats, are a very diverse and abundant group of species. Although they can be very different species with locally distinct needs, radical exploitation of forest habitats and global changes have meant that many of them are regionally endangered and survive today only in small populations. To help develop appropriate conservation policies and management plans, much research in recent decades has been focussed on inferring habitat selection by tree-dwelling bats. However, large variability in the reported selection patterns makes it difficult to suggest some more-or-less universal and easily applicable management recommendations, also for regions in which nature conservation awareness is low. 2. We created a meta-analytic model to explore selection patterns at a global scale. Phylogenetic relationships among species and additional variables were included to explain discrepancies between studies. 3. A meta-analytic model showed that bats are selecting trees with trunk diameters that are larger than those of randomly selected trees, and this pattern is consistent within each biogeographical region. However, meta-regression revealed that the detectability of the selection depends strongly on the structural variability within the study environment (size of randomly selected or surrounding trees in forest stands, forest fragmentation, habitat disturbance) and on the methodological approach that has been applied (the length of the study). We found stronger selection for larger trees in non-fragmented and less disturbed forests than in fragmented forests with high habitat disturbance, and, strikingly, short-term studies yielded results with stronger selection than long-term studies. 4. Our results suggest that patterns of roosting habitat selection by bats may be overestimated in some studies. In conclusion, we propose that further research should be conducted in all types of forest ecosystem (data from the tropics are currently missing). Future studies should include at least three years of data collection, in order to avoid estimation bias in habitat selection patterns. Close http://onlinelibrary.wiley.com/doi/10.1111/mam.12044/abstract doi:10.1111/mam.12044 Close
Kaňuch, P; Jarčuška, B; Kovács, L; Krištín, A Environmentally driven variability in size-selective females' mating frequency of bush-cricket Pholidoptera griseoaptera Journal Article Evolutionary Ecology, 29 (5), pp. 787–797, 2015. Abstract \| Links \| BibTeX @article{Kaňuch2015, title = {Environmentally driven variability in size-selective females' mating frequency of bush-cricket \textit{Pholidoptera griseoaptera}}, author = {P. Kaňuch and B. Jarčuška and L. Kovács and A. Krištín}, url = {http://link.springer.com/article/10.1007/s10682-015-9784-5}, year = {2015}, date = {2015-07-28}, journal = {Evolutionary Ecology}, volume = {29}, number = {5}, pages = {787–797}, abstract = {Reproduction in less favourable conditions requires genetic adaptation and/or behavioural plasticity of the organism. In order to determine the effects of these mechanisms on environment-associated variability in polyandry, a phenomenon related to reproductive success, we explored the frequency of copulations in females of nuptial giftgiving bush-cricket Pholidoptera griseoaptera (Orthoptera: Tettigoniidae) using a laboratory experiment. In a factorial design, we reared two populations originating from contrasting altitudes in two temperature treatment conditions. After 3 weeks for possible copulations in established mating groups, females (n = 108) contained between 0 and 15 spermatodoses (a proxy for the number of copulations) in their spermatheca. The mean number of spermatodoses per female did not differ either between lowland and highland populations or between warm and cold treatments. Thus, we did not observe main effects of these two factors on adaptation or plasticity. In contrast, the frequency of copulations was significantly affected by female size as log(number of spermatodoses) increased by 0.41 ± 0.27 per each 0.1 mm of pronotum length. However, interactions between the body size (the trait that predicts females’ quality for reproduction) with environmental factors revealed that larger females originating from the highland population and larger females reared in cold treatment copulated more often than smaller ones, whereas females’ size did not affect copulation frequency in the lowland population or in warm treatment. It suggests stronger competition among females in harsher environmental conditions, whereas effect sizes of interaction terms showed that observed mating behaviour expressed a similar extent of genetic and plastic responses to female size. This first observation of environment-associated body size-dependent mating behaviour suggests the interplay of sexual and natural selection in a nuptial gift-giving species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Reproduction in less favourable conditions requires genetic adaptation and/or behavioural plasticity of the organism. In order to determine the effects of these mechanisms on environment-associated variability in polyandry, a phenomenon related to reproductive success, we explored the frequency of copulations in females of nuptial giftgiving bush-cricket Pholidoptera griseoaptera (Orthoptera: Tettigoniidae) using a laboratory experiment. In a factorial design, we reared two populations originating from contrasting altitudes in two temperature treatment conditions. After 3 weeks for possible copulations in established mating groups, females (n = 108) contained between 0 and 15 spermatodoses (a proxy for the number of copulations) in their spermatheca. The mean number of spermatodoses per female did not differ either between lowland and highland populations or between warm and cold treatments. Thus, we did not observe main effects of these two factors on adaptation or plasticity. In contrast, the frequency of copulations was significantly affected by female size as log(number of spermatodoses) increased by 0.41 ± 0.27 per each 0.1 mm of pronotum length. However, interactions between the body size (the trait that predicts females’ quality for reproduction) with environmental factors revealed that larger females originating from the highland population and larger females reared in cold treatment copulated more often than smaller ones, whereas females’ size did not affect copulation frequency in the lowland population or in warm treatment. It suggests stronger competition among females in harsher environmental conditions, whereas effect sizes of interaction terms showed that observed mating behaviour expressed a similar extent of genetic and plastic responses to female size. This first observation of environment-associated body size-dependent mating behaviour suggests the interplay of sexual and natural selection in a nuptial gift-giving species. Close http://link.springer.com/article/10.1007/s10682-015-9784-5 Close
Nováková, M; Bulková, A; Costa, F B; Krištín, A; Krist, M; Krause, F; Líznarová, E; Labruna, M B; Literák, I Molecular characterization of 'Candidatus Rickettsia vini' in Ixodes arboricola from the Czech Republic and Slovakia Journal Article Ticks and Tick-Borne Diseases, 6 (3), pp. 330–333, 2015. Links \| BibTeX @article{M.2015b, title = {Molecular characterization of '\textit{Candidatus} Rickettsia vini' in \textit{Ixodes arboricola} from the Czech Republic and Slovakia}, author = {M. Nováková and A. Bulková and F.B. Costa and A. Krištín and M. Krist and F. Krause and E. Líznarová and M.B. Labruna and I. Literák}, url = {http://www.sciencedirect.com/science/article/pii/S1877959X15000321}, year = {2015}, date = {2015-04-01}, journal = {Ticks and Tick-Borne Diseases}, volume = {6}, number = {3}, pages = {330–333}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.sciencedirect.com/science/article/pii/S1877959X15000321 Close
Kaňuch, P; Aghová, T; Meheretu, Y; Šumbera, R; Bryja, J New discoveries on the ecology and echolocation of the heart-nosed bat Cardioderma cor with a contribution to the phylogeny of Megadermatidae Journal Article African Zoology, 50 , pp. 53-57, 2015. Links \| BibTeX @article{P.2015b, title = {New discoveries on the ecology and echolocation of the heart-nosed bat Cardioderma cor with a contribution to the phylogeny of Megadermatidae}, author = {P. Kaňuch and T. Aghová and Y. Meheretu and R. Šumbera and J. Bryja}, url = {http://www.tandfonline.com/doi/pdf/10.1080/15627020.2015.1021711}, year = {2015}, date = {2015-03-16}, journal = {African Zoology}, volume = {50}, pages = {53-57}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.tandfonline.com/doi/pdf/10.1080/15627020.2015.1021711 Close
Kaňuch, P; Sliacka, A; Krištín, A Habitat-conditioned feeding behaviour in Barbitistes constrictus (Orthoptera: Tettigoniidae). Journal Article Open Life Sciences, 10 (1), pp. 1-6, 2015. Links \| BibTeX @article{P.2015b, title = {Habitat-conditioned feeding behaviour in \textit{Barbitistes constrictus} (Orthoptera: Tettigoniidae).}, author = {P. Kaňuch and A. Sliacka and A. Krištín}, url = {https://www.degruyter.com/view/j/biol.2015.10.issue-1/biol-2015-0001/biol-2015-0001.xml}, year = {2015}, date = {2015-01-01}, journal = {Open Life Sciences}, volume = {10}, number = {1}, pages = {1-6}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.degruyter.com/view/j/biol.2015.10.issue-1/biol-2015-0001/biol-2015-0[...] Close
Dorková, M; Kocianová-Adamcová, A Population dynamics and spatial activity of small terrestrial mammals in the alpine zone of the Low Tatra Mts., Slovakia (Rodentia, Eulipotyphla) Journal Article Lynx, 46 , pp. 19-28, 2015. Abstract \| Links \| BibTeX @article{Dorková2015, title = {Population dynamics and spatial activity of small terrestrial mammals in the alpine zone of the Low Tatra Mts., Slovakia (Rodentia, Eulipotyphla)}, author = {M. Dorková and A. Kocianová-Adamcová }, url = {https://ife.sk/2015_dorkova/}, year = {2015}, date = {2015-01-01}, journal = {Lynx}, volume = {46}, pages = {19-28}, abstract = {Research on small terrestrial mammals in the alpine zone of the Nízke Tatry (Low Tatra) Mts. was carried out between 2011 and 2014. During 377 trapping sessions performed in this period, a total of 206 individuals were recorded using the capture-mark-recapture (CMR) method. The most frequently recorded species were Chionomys nivalis mirhanreini and Microtus tatricus, followed by Microtus agrestis, Clethrionomys glareolus, Apodemus flavicollis, Sorex araneus, and S. minutus. The presence of Clethrionomys glareolus in the alpine zone, in places without vegetation, with a continuous coverage of bare rocks refutes the allegations that this species is restricted to the sub-alpine zone covered by the dwarf pine. A similar pattern of seasonal dynamics of Apodemus flavicollis and Clethrionomys glareolus was found in the alpine zone, which might be a consequence of their overpopulation at lower altitudes. The signs of sexual activity of Chionomys nivalis observed in the autumn months (September-October) suggest that -- contrary to previous studies -- the species can remain sexually active even after the August peak. Our hypothesis is that the extended sexual activity of the species is a result of its synanthropisation and migration into nearby buildings. Due to the insufficient performance of the trapping method, there was some uncertainty in the quantitative estimation of Eulipotyphla population densities. Out of all species recorded, Microtus agrestis was the least trapped, suggesting that the alpine zone represents a suboptimal sink habitat for this species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Research on small terrestrial mammals in the alpine zone of the Nízke Tatry (Low Tatra) Mts. was carried out between 2011 and 2014. During 377 trapping sessions performed in this period, a total of 206 individuals were recorded using the capture-mark-recapture (CMR) method. The most frequently recorded species were Chionomys nivalis mirhanreini and Microtus tatricus, followed by Microtus agrestis, Clethrionomys glareolus, Apodemus flavicollis, Sorex araneus, and S. minutus. The presence of Clethrionomys glareolus in the alpine zone, in places without vegetation, with a continuous coverage of bare rocks refutes the allegations that this species is restricted to the sub-alpine zone covered by the dwarf pine. A similar pattern of seasonal dynamics of Apodemus flavicollis and Clethrionomys glareolus was found in the alpine zone, which might be a consequence of their overpopulation at lower altitudes. The signs of sexual activity of Chionomys nivalis observed in the autumn months (September-October) suggest that -- contrary to previous studies -- the species can remain sexually active even after the August peak. Our hypothesis is that the extended sexual activity of the species is a result of its synanthropisation and migration into nearby buildings. Due to the insufficient performance of the trapping method, there was some uncertainty in the quantitative estimation of Eulipotyphla population densities. Out of all species recorded, Microtus agrestis was the least trapped, suggesting that the alpine zone represents a suboptimal sink habitat for this species. Close https://ife.sk/2015_dorkova/ Close
2014
Fornůsková, A; Petit, E J; Bartonička, T; Kaňuch, P; Butet, A; Rehák, Z; Bryja, J Strong matrilineal structure in common pipistrelle bats (Pipistrellus pipistrellus) is associated with variability in echolocation calls Journal Article Biological Journal of the Linnean Society, 113 (4), pp. 1115–1125, 2014. Links \| BibTeX @article{A.2014, title = {Strong matrilineal structure in common pipistrelle bats (\textit{Pipistrellus pipistrellus}) is associated with variability in echolocation calls}, author = {A. Fornůsková and E.J. Petit and T. Bartonička and P. Kaňuch and A. Butet and Z. Rehák and J. Bryja}, url = {http://onlinelibrary.wiley.com/doi/10.1111/bij.12381/abstract}, year = {2014}, date = {2014-12-01}, journal = {Biological Journal of the Linnean Society}, volume = {113}, number = {4}, pages = {1115–1125}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://onlinelibrary.wiley.com/doi/10.1111/bij.12381/abstract Close
Hrivnák, R; Gömöry, D; Slezák, M; Ujházy, K; Hédl, R; Jarčuška, B; Ujházyová, M Species richness pattern along altitudinal gradient in central European beech forests Journal Article Folia Geobotanica, 49 (3), pp. 425–441, 2014. Abstract \| Links \| BibTeX @article{Hrivnák2014, title = {Species richness pattern along altitudinal gradient in central European beech forests}, author = {R. Hrivnák and D. Gömöry and M. Slezák and K. Ujházy and R. Hédl and B. Jarčuška and M. Ujházyová}, url = {http://link.springer.com/article/10.1007/s12224-013-9174-0}, doi = {10.1007/s12224-013-9174-0}, year = {2014}, date = {2014-09-01}, journal = {Folia Geobotanica}, volume = {49}, number = {3}, pages = {425–441}, abstract = {The unimodal species richness-altitude distribution pattern seems to be universal. To investigate the validity of this phenomenon in homogeneous substrate and vegetation conditions, we sampled beech-dominated forests in five volcanic mountain ranges in the Western Carpathians. European beech (Fagus sylvatica L.) formed monodominant closed-canopy stands at altitudes from 300 to 1,200 m. Along this gradient, the influence of beech on understory plant species richness was expected to be strong and uniform. The shape of the species richness-altitude relationship was analyzed for three datasets: herb layer, shrub layer, and both layers merged together. Contrary to prediction, the studied species richness-altitude relationship was inversely unimodal, with a minimum at intermediate altitudes. Quadratic regression models were statistically significant for all three datasets (P<0.001) and the explained variability ranged from 12 % to 20 %. The possible explanation for the observed pattern is twofold. In the central part of the altitudinal gradient, low species richness is due to strong competition by monodominant beech with accumulation of leaf litter and uptake soil resources, mainly water. This influence is somewhat released towards the margins of the gradient. Secondly, the species pool from the neighbouring communities increases species richness only in the lower parts of the altitudinal gradient.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The unimodal species richness-altitude distribution pattern seems to be universal. To investigate the validity of this phenomenon in homogeneous substrate and vegetation conditions, we sampled beech-dominated forests in five volcanic mountain ranges in the Western Carpathians. European beech (Fagus sylvatica L.) formed monodominant closed-canopy stands at altitudes from 300 to 1,200 m. Along this gradient, the influence of beech on understory plant species richness was expected to be strong and uniform. The shape of the species richness-altitude relationship was analyzed for three datasets: herb layer, shrub layer, and both layers merged together. Contrary to prediction, the studied species richness-altitude relationship was inversely unimodal, with a minimum at intermediate altitudes. Quadratic regression models were statistically significant for all three datasets (P<0.001) and the explained variability ranged from 12 % to 20 %. The possible explanation for the observed pattern is twofold. In the central part of the altitudinal gradient, low species richness is due to strong competition by monodominant beech with accumulation of leaf litter and uptake soil resources, mainly water. This influence is somewhat released towards the margins of the gradient. Secondly, the species pool from the neighbouring communities increases species richness only in the lower parts of the altitudinal gradient. Close http://link.springer.com/article/10.1007/s12224-013-9174-0 doi:10.1007/s12224-013-9174-0 Close
Kašová, M; Naďo, L; Kaňuch, P Structure of tree vegetation may reduce costs of territory defence in Eurasian Nuthatch Sitta europaea Journal Article Bird Study, 61 , pp. 413-420, 2014. Abstract \| Links \| BibTeX @article{M.2014b, title = {Structure of tree vegetation may reduce costs of territory defence in Eurasian Nuthatch \textit{Sitta europaea}}, author = {M. Kašová and L. Naďo and P. Kaňuch}, url = {http://www.tandfonline.com/doi/abs/10.1080/00063657.2014.933771}, year = {2014}, date = {2014-07-15}, journal = {Bird Study}, volume = {61}, pages = {413-420}, abstract = {Capsule: In pastured old oak woodland, breeding pairs of Eurasian Nuthatch selected territories with significantly higher densities of trees and cavities. Aims: To define territorial borders that exist within a nuthatch population and to compare densities of trees and cavities between used and non-used parts of their available habitat in order to determine habitat preferences. Methods: The number and location of territories was estimated by mapping the individual positions of colour-ringed birds. We measured habitat characteristics in regular sampling grid (number of trees and number of cavities per 50×50 m) during three successive seasons and modelled probability of occurrence of nuthatch territories in the area. Results: Breeding pairs were observed to defend territories of median size between 1.46 and 2.93 ha. These sizes correspond well to high-quality habitat territories for this species. We found that pairs tended to occupy territories with higher densities of trees and cavities. Based on generalized linear mixed-effects model estimates, we found that in pastured oak woodland habitat with density of 60 trees per ha, the estimated probability of occurrence (with 95% confidence interval) of a nuthatch territory was about 96% (83−99). For cavity density, the probability of territory occurrence was about 74% (52−89) at the level of 60 cavities per ha. Conclusion: We suggest that higher tree and cavity densities reduce territory defence costs in the species because birds may use less energy during foraging, predation avoidance and competition for a nest hole.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Capsule: In pastured old oak woodland, breeding pairs of Eurasian Nuthatch selected territories with significantly higher densities of trees and cavities. Aims: To define territorial borders that exist within a nuthatch population and to compare densities of trees and cavities between used and non-used parts of their available habitat in order to determine habitat preferences. Methods: The number and location of territories was estimated by mapping the individual positions of colour-ringed birds. We measured habitat characteristics in regular sampling grid (number of trees and number of cavities per 50×50 m) during three successive seasons and modelled probability of occurrence of nuthatch territories in the area. Results: Breeding pairs were observed to defend territories of median size between 1.46 and 2.93 ha. These sizes correspond well to high-quality habitat territories for this species. We found that pairs tended to occupy territories with higher densities of trees and cavities. Based on generalized linear mixed-effects model estimates, we found that in pastured oak woodland habitat with density of 60 trees per ha, the estimated probability of occurrence (with 95% confidence interval) of a nuthatch territory was about 96% (83−99). For cavity density, the probability of territory occurrence was about 74% (52−89) at the level of 60 cavities per ha. Conclusion: We suggest that higher tree and cavity densities reduce territory defence costs in the species because birds may use less energy during foraging, predation avoidance and competition for a nest hole. Close http://www.tandfonline.com/doi/abs/10.1080/00063657.2014.933771 Close
Kaňuch, P; Jarčuška, B; Iorgu, E I; Iorgu, I S; Krištín, A Geographic variation in relict populations: genetics and phenotype of bush-cricket Pholidoptera frivaldskyi (Orthoptera) in Carpathians Journal Article Journal of Insect Conservation, 18 (2), pp. 257–266, 2014. Abstract \| Links \| BibTeX @article{Kaňuch2014, title = {Geographic variation in relict populations: genetics and phenotype of bush-cricket \textit{Pholidoptera frivaldskyi} (Orthoptera) in Carpathians}, author = {P. Kaňuch and B. Jarčuška and E.I. Iorgu and I.S. Iorgu and A. Krištín}, url = {http://link.springer.com/article/10.1007/s10841-014-9636-6}, doi = {10.1007/s10841-014-9636-6}, year = {2014}, date = {2014-04-01}, journal = {Journal of Insect Conservation}, volume = {18}, number = {2}, pages = {257–266}, abstract = {A decreasing population size is often causing species extinction, however, relict species persisting in small-sized populations counter this. We analysed spatial genetic variation and past changes in population size at the maternally-inherited mitochondrial DNA level to clarify the origin of all recently known isolated populations of Pholidoptera frivaldskyi occurring in the range of Carpathian Mountains. Along with that we analysed also morphological variation as some phenotypic traits can retain useful information on population genetic structure. We found a relatively low genetic diversity within isolated populations as 778 bp COI gene sequences revealed only 13 unique haplotypes (n = 173 individuals from 10 populations). The spatial analysis of molecular variance identified three geographically homogenous genetic clusters (one in Slovakia and two in Romania) with a high level of differentiation among them, suggesting restricted gene flow, whilst Bayesian skyline simulation reconstructed a negative demographic change through evolutionary time. Inferred genetic pattern clearly coincides with differences in males’ colour phenotype as the extent of pigmentation on the lateral pronotum varied significantly among genetic lineages. We suggest that geographical variation in the species populations has relict-like character and their isolated occurrence is not a result of recent introduction events. Identification of ‘evolutionary units’ may help in the conservation and management of this rare insect species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close A decreasing population size is often causing species extinction, however, relict species persisting in small-sized populations counter this. We analysed spatial genetic variation and past changes in population size at the maternally-inherited mitochondrial DNA level to clarify the origin of all recently known isolated populations of Pholidoptera frivaldskyi occurring in the range of Carpathian Mountains. Along with that we analysed also morphological variation as some phenotypic traits can retain useful information on population genetic structure. We found a relatively low genetic diversity within isolated populations as 778 bp COI gene sequences revealed only 13 unique haplotypes (n = 173 individuals from 10 populations). The spatial analysis of molecular variance identified three geographically homogenous genetic clusters (one in Slovakia and two in Romania) with a high level of differentiation among them, suggesting restricted gene flow, whilst Bayesian skyline simulation reconstructed a negative demographic change through evolutionary time. Inferred genetic pattern clearly coincides with differences in males’ colour phenotype as the extent of pigmentation on the lateral pronotum varied significantly among genetic lineages. We suggest that geographical variation in the species populations has relict-like character and their isolated occurrence is not a result of recent introduction events. Identification of ‘evolutionary units’ may help in the conservation and management of this rare insect species. Close http://link.springer.com/article/10.1007/s10841-014-9636-6 doi:10.1007/s10841-014-9636-6 Close
Kaňuch, P; Berggren, A; Cassel-Lundhagen, A Genetic diversity of a successful colonizer: isolated populations of Metrioptera roeselii regain variation at an unusually rapid rate Journal Article Ecology and Evolution, 4 (7), pp. 1117–1126, 2014. Links \| BibTeX @article{P.2014b, title = {Genetic diversity of a successful colonizer: isolated populations of \textit{Metrioptera roeselii} regain variation at an unusually rapid rate}, author = {P. Kaňuch and A. Berggren and A. Cassel-Lundhagen}, url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3997326/}, year = {2014}, date = {2014-04-01}, journal = {Ecology and Evolution}, volume = {4}, number = {7}, pages = {1117–1126}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3997326/ Close
Jarčuška, B; Kaňuch, P Female bush-crickets, Pholidoptera griseoaptera, that have received smaller ejaculates show a higher mating rate in the field Journal Article Journal of Insect Behavior, 27 (3), pp. 411–418, 2014. Abstract \| Links \| BibTeX @article{Jarčuška2014, title = {Female bush-crickets, \textit{Pholidoptera griseoaptera}, that have received smaller ejaculates show a higher mating rate in the field}, author = {B. Jarčuška and P. Kaňuch}, url = {http://link.springer.com/article/10.1007/s10905-014-9438-4}, doi = {10.1007/s10905-014-9438-4}, year = {2014}, date = {2014-01-29}, journal = {Journal of Insect Behavior}, volume = {27}, number = {3}, pages = {411–418}, abstract = {Females of numerous insect species are known to be polyandrous, but there have been relatively few studies of factors associated with the degree of polyandry in females in the field. Number of copulations by females is negatively associated with ejaculate size across bush-cricket species. Assessing intraspecific variability is important when looking for and interpreting trait evolution. Therefore the aim of this study was to test the association between ejaculate size (i.e. volume of spermatodose–spermatophore-like structure formed within the spermatheca) and mating rate (i.e. number of spermatodoses) of females of Pholidoptera griseoaptera, while accounting for female body size (pronotum length) and age (number of hind leg’s cuticular bands). The results based on field-caught individuals suggested that there were statistically significant negative association between smallest and mean spermatodose volume, respectively, and number of copulations in this nuptial gift-giving bush-cricket species. This is in accordance with interspecific associations between ejaculate size and polyandry. However, lower slope of the intraspecific relationship may suggest lower importance of the ejaculate size in explaining females’ mating rate variability in this nuptial gift-giving species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Females of numerous insect species are known to be polyandrous, but there have been relatively few studies of factors associated with the degree of polyandry in females in the field. Number of copulations by females is negatively associated with ejaculate size across bush-cricket species. Assessing intraspecific variability is important when looking for and interpreting trait evolution. Therefore the aim of this study was to test the association between ejaculate size (i.e. volume of spermatodose–spermatophore-like structure formed within the spermatheca) and mating rate (i.e. number of spermatodoses) of females of Pholidoptera griseoaptera, while accounting for female body size (pronotum length) and age (number of hind leg’s cuticular bands). The results based on field-caught individuals suggested that there were statistically significant negative association between smallest and mean spermatodose volume, respectively, and number of copulations in this nuptial gift-giving bush-cricket species. This is in accordance with interspecific associations between ejaculate size and polyandry. However, lower slope of the intraspecific relationship may suggest lower importance of the ejaculate size in explaining females’ mating rate variability in this nuptial gift-giving species. Close http://link.springer.com/article/10.1007/s10905-014-9438-4 doi:10.1007/s10905-014-9438-4 Close
Hausknecht, R; Jacobs, S; Müller, J; Zink, R; Frey, H; Solheim, R; Vrezec, A; Krištín, A; Mihók, J; Kergalve, I; Saurola, P; Kuehn, R Phylogeographic analysis and genetic cluster recognition for the conservation of Ural Owls (Strix uralensis) in Europe Journal Article Journal of Ornithology, 155 (1), pp. 121–134, 2014. Links \| BibTeX @article{R.2014, title = {Phylogeographic analysis and genetic cluster recognition for the conservation of Ural Owls (\textit{Strix uralensis}) in Europe}, author = {R. Hausknecht and S. Jacobs and J. Müller and R. Zink and H. Frey and R. Solheim and A. Vrezec and A. Krištín and J. Mihók and I. Kergalve and P. Saurola and R. Kuehn}, url = {http://link.springer.com/article/10.1007%2Fs10336-013-0994-8}, year = {2014}, date = {2014-01-01}, journal = {Journal of Ornithology}, volume = {155}, number = {1}, pages = {121–134}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://link.springer.com/article/10.1007%2Fs10336-013-0994-8 Close
2013
Naďo, L; Kaňuch, P Dawn swarming in tree-dwelling bats – an unexplored behaviour Journal Article Acta Chiropterologica, 15 (2), pp. 387-392, 2013, ISSN: 1508-1109 . Abstract \| Links \| BibTeX @article{L.2013, title = {Dawn swarming in tree-dwelling bats – an unexplored behaviour}, author = {L. Naďo and P. Kaňuch}, url = {http://www.bioone.org/doi/abs/10.3161/150811013X679008}, issn = {1508-1109 }, year = {2013}, date = {2013-11-06}, journal = {Acta Chiropterologica}, volume = {15}, number = {2}, pages = {387-392}, abstract = {In colonial tree-dwelling bats, is vital to prevent disintegration of the group during frequent roost-switching. Thus some mechanisms which maintain group cohesion are expected. Dawn swarming is a set of behavioural displays observed in many such bats before they enter the roost. It is suggested that this behaviour plays a role in transferring information about the roost position. However this phenomenon had not been explored in detail. Based on qualitative and quantitative description of behaviour we suggest its potential function. Using field-based video-recordings of swarming sessions made on maternity colonies of Leisler’s bat (Nyctalus leisleri), we constructed ethograms which revealed remarkably similar behavioural sequences among individuals. For more than two hours prior to sunrise, individual flybys in front of the roost entrance predominated, followed by landings and leaps, which preceded the final entering of the roost. Interestingly, no obvious peak of behavioural activity was found at any particular time during swarming but a wave-like pattern was observed. We suggest that individuals are swarming in close proximity to the roosting tree with some purpose, most probably serving as a beacon for other group members and thus marking the current location of the roost.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close In colonial tree-dwelling bats, is vital to prevent disintegration of the group during frequent roost-switching. Thus some mechanisms which maintain group cohesion are expected. Dawn swarming is a set of behavioural displays observed in many such bats before they enter the roost. It is suggested that this behaviour plays a role in transferring information about the roost position. However this phenomenon had not been explored in detail. Based on qualitative and quantitative description of behaviour we suggest its potential function. Using field-based video-recordings of swarming sessions made on maternity colonies of Leisler’s bat (Nyctalus leisleri), we constructed ethograms which revealed remarkably similar behavioural sequences among individuals. For more than two hours prior to sunrise, individual flybys in front of the roost entrance predominated, followed by landings and leaps, which preceded the final entering of the roost. Interestingly, no obvious peak of behavioural activity was found at any particular time during swarming but a wave-like pattern was observed. We suggest that individuals are swarming in close proximity to the roosting tree with some purpose, most probably serving as a beacon for other group members and thus marking the current location of the roost. Close http://www.bioone.org/doi/abs/10.3161/150811013X679008 Close
Jarčuška, B; Day, M The effect of age on height growth in even-sized saplings of Fagus sylvatica L. Journal Article Trees, 27 (6), pp. 1821–1825, 2013. Abstract \| Links \| BibTeX @article{Jarčuška2013, title = {The effect of age on height growth in even-sized saplings of \textit{Fagus sylvatica} L.}, author = {B. Jarčuška and M. Day}, url = {http://link.springer.com/article/10.1007/s00468-013-0911-z https://docs.google.com/file/d/0Bz8ojhHeiNclV01LSTJGS0Zmak0/edit}, doi = {10.1007/s00468-013-0911-z}, year = {2013}, date = {2013-07-30}, journal = {Trees}, volume = {27}, number = {6}, pages = {1821–1825}, abstract = {Common beech (Fagus sylvatica L.) saplings were studied along gradients of light availability (4–82 % of full sunlight), initial size (9–290 cm), and age (2–25 years) to examine the interactive effect of these variables on saplings’ annual height growth. Although age was non-significant as a main effect in a linear model, sapling age had a significant interaction with the other variables. After controlling for the effects of size and light, partial regression revealed that height growth was negatively affected by sapling age. Observed growth decline in older common-sized saplings may be explained not as effect of age per se, but as indirect age-related effect probably induced through plastic response of saplings to past growth conditions.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Common beech (Fagus sylvatica L.) saplings were studied along gradients of light availability (4–82 % of full sunlight), initial size (9–290 cm), and age (2–25 years) to examine the interactive effect of these variables on saplings’ annual height growth. Although age was non-significant as a main effect in a linear model, sapling age had a significant interaction with the other variables. After controlling for the effects of size and light, partial regression revealed that height growth was negatively affected by sapling age. Observed growth decline in older common-sized saplings may be explained not as effect of age per se, but as indirect age-related effect probably induced through plastic response of saplings to past growth conditions. Close http://link.springer.com/article/10.1007/s00468-013-0911-z https://docs.google.com/file/d/0Bz8ojhHeiNclV01LSTJGS0Zmak0/edit doi:10.1007/s00468-013-0911-z Close
Krištín, A; Kaňuch, P A review of distribution and ecology of three Orthoptera species of European importance with contributions from their recent north-western range Journal Article North-Western Journal of Zoology, 9 (1), pp. 185-190, 2013. Links \| BibTeX @article{A.2013, title = {A review of distribution and ecology of three Orthoptera species of European importance with contributions from their recent north-western range}, author = {A. Krištín and P. Kaňuch}, url = {http://biozoojournals.ro/nwjz/content/v9n1/nwjz.132101.Kristin.pdf}, year = {2013}, date = {2013-06-01}, journal = {North-Western Journal of Zoology}, volume = {9}, number = {1}, pages = {185-190}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://biozoojournals.ro/nwjz/content/v9n1/nwjz.132101.Kristin.pdf Close
Latková, H; Sándor, A K; Krištín, A Diet composition of the scops owl (Otus scops) in central Romania Journal Article Slovak Raptor Journal , 6 , pp. 17–26, 2013, ISSN: 1337-3463. Links \| BibTeX @article{LATKOVÁ2013, title = {Diet composition of the scops owl (Otus scops) in central Romania}, author = {H. Latková and A.K. Sándor and A. Krištín}, url = {https://www.degruyter.com/view/j/srj.2012.6.issue-1/v10262-012-0064-9/v10262-012-0064-9.xml}, doi = {https://doi.org/10.2478/v10262-012-0064-9}, issn = {1337-3463}, year = {2013}, date = {2013-06-01}, journal = {Slovak Raptor Journal }, volume = {6}, pages = {17–26}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.degruyter.com/view/j/srj.2012.6.issue-1/v10262-012-0064-9/v10262-012[...] doi:https://doi.org/10.2478/v10262-012-0064-9 Close
Sliacka, A; Krištín, A; Naďo, L Response to Orthoptera to clear-cuts in beech forests Journal Article European Journal of Entomology, 110 (2), pp. 319-326, 2013. Links \| BibTeX @article{A.2013b, title = {Response to Orthoptera to clear-cuts in beech forests}, author = {A. Sliacka and A. Krištín and L. Naďo}, url = {http://www.eje.cz/artkey/eje-201302-0018_response_of_orthoptera_to_clear-cuts_in_beech_forests.php}, year = {2013}, date = {2013-04-11}, journal = {European Journal of Entomology}, volume = {110}, number = {2}, pages = {319-326}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.eje.cz/artkey/eje-201302-0018_response_of_orthoptera_to_clear-cuts_in[...] Close
Kaňuch, P; Kiehl, B; Low, M; Cassel-Lundhagen, A On variation of polyandry in a bush-cricket, Metrioptera roeselii, in northern Europe Journal Article Journal of Insect Science, 13 , pp. 1-10, 2013. Links \| BibTeX @article{P.2013, title = {On variation of polyandry in a bush-cricket, \textit{Metrioptera roeselii}, in northern Europe}, author = {P. Kaňuch and B. Kiehl and M. Low and A. Cassel-Lundhagen}, url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3735106/}, year = {2013}, date = {2013-03-02}, journal = {Journal of Insect Science}, volume = {13}, pages = {1-10}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3735106/ Close
Kaňuch, P; Berggren, A; Cassel-Lundhagen, A Colonization history of Metrioptera roeselii in northern Europe indicates human-mediated dispersal Journal Article Journal of Biogeography, 40 (5), pp. 977–987, 2013. Links \| BibTeX @article{P.2013b, title = {Colonization history of \textit{Metrioptera roeselii} in northern Europe indicates human-mediated dispersal}, author = {P. Kaňuch and A. Berggren and A. Cassel-Lundhagen}, url = {http://onlinelibrary.wiley.com/doi/10.1111/jbi.12048/abstract}, year = {2013}, date = {2013-01-01}, journal = {Journal of Biogeography}, volume = {40}, number = {5}, pages = {977–987}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://onlinelibrary.wiley.com/doi/10.1111/jbi.12048/abstract Close
Sliacka, A; Krištín, A; Naďo, L Orthoptera assemblages of beech stand plots during early succession stages after clearcutting Journal Article Journal of Forest Science, 59 (3), pp. 93-100, 2013. BibTeX @article{Sliacka2013, title = {Orthoptera assemblages of beech stand plots during early succession stages after clearcutting}, author = {A. Sliacka and A. Krištín and L. Naďo}, year = {2013}, date = {2013-01-01}, journal = {Journal of Forest Science}, volume = {59}, number = {3}, pages = {93-100}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Jarčuška, B; Mihál, I; Cicák, A; Tsakov, H Beech bark necrosis: partitioning the environmental and spatial variation of the damage severity in Central and South-Eastern Europe Journal Article Annals of Forest Research, 56 , pp. 317-338, 2013. Abstract \| Links \| BibTeX @article{Jarčuška2013b, title = {Beech bark necrosis: partitioning the environmental and spatial variation of the damage severity in Central and South-Eastern Europe}, author = {B. Jarčuška and I. Mihál and A. Cicák and H. Tsakov }, url = {http://www.afrjournal.org/index.php/afr/article/viewFile/34/53}, year = {2013}, date = {2013-01-01}, journal = {Annals of Forest Research}, volume = {56}, pages = {317-338}, abstract = { The beech bark necrosis (BBN) infestation severity of European beech (Fagus sylvatica L.) was assessed in regions of Central (CE) and South-Eastern Europe (SE). Altogether more than 10,000 trees were sampled at 114 sites. Using variation partitioning method, we examined the pure and shared effects of stand, site, climate and spatial sets of variables on mean BBN severity. Our rating included (i) the whole stand, (ii) tree social status classes, (iii) canopy (C) and (iv) understory (U) trees separately. We found that C trees were less affected by BBN than sub-canopy and U trees in both regions. There were found inter-regional differences in amount of explained variability (25.4–73.9%) for whole stand BBN and in the sensitivity of C and U trees to the environmental gradients. The analysis revealed that the climate and spatial variables followed by stand variables had the largest marginal effects on mean BBN severity in all models, while the site set of variables had the weakest one. More than half of the explained variation was shared among four sets of variables in SE, contrary to CE. Except to U trees in SE, the effect of climate – pure or spatially structured – remained the highest also after partitioning of variance; more in SE than in CE. Taking into account positive association between mean annual temperature and mean BBN severity in C trees in SE, reinforced negative effect of climate change on the necrosis might be expected to be more serious mainly in low situated beech forests there. Promoting the tree species diversity in areas with higher incidence of beech bark necrosis, i.e. in low altitudes in SE, could reduce the susceptibility of forests to the necrosis at regional level in the future. For better understanding of the relative importance of environmental and spatial variables on BBN severity, further research performed on finer spatial scale (extent and grain) is necessary, along with accounting for pathogens involved in the infestation.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The beech bark necrosis (BBN) infestation severity of European beech (Fagus sylvatica L.) was assessed in regions of Central (CE) and South-Eastern Europe (SE). Altogether more than 10,000 trees were sampled at 114 sites. Using variation partitioning method, we examined the pure and shared effects of stand, site, climate and spatial sets of variables on mean BBN severity. Our rating included (i) the whole stand, (ii) tree social status classes, (iii) canopy (C) and (iv) understory (U) trees separately. We found that C trees were less affected by BBN than sub-canopy and U trees in both regions. There were found inter-regional differences in amount of explained variability (25.4–73.9%) for whole stand BBN and in the sensitivity of C and U trees to the environmental gradients. The analysis revealed that the climate and spatial variables followed by stand variables had the largest marginal effects on mean BBN severity in all models, while the site set of variables had the weakest one. More than half of the explained variation was shared among four sets of variables in SE, contrary to CE. Except to U trees in SE, the effect of climate – pure or spatially structured – remained the highest also after partitioning of variance; more in SE than in CE. Taking into account positive association between mean annual temperature and mean BBN severity in C trees in SE, reinforced negative effect of climate change on the necrosis might be expected to be more serious mainly in low situated beech forests there. Promoting the tree species diversity in areas with higher incidence of beech bark necrosis, i.e. in low altitudes in SE, could reduce the susceptibility of forests to the necrosis at regional level in the future. For better understanding of the relative importance of environmental and spatial variables on BBN severity, further research performed on finer spatial scale (extent and grain) is necessary, along with accounting for pathogens involved in the infestation. Close http://www.afrjournal.org/index.php/afr/article/viewFile/34/53 Close
2012
Jarčuška, B; Milla, R Shoot level biomass allocation is affected by shoot type in Fagus sylvatica Journal Article Journal of Plant Ecology, 5 (4), pp. 422-428, 2012. Abstract \| Links \| BibTeX @article{Jarčuška2012, title = {Shoot level biomass allocation is affected by shoot type in Fagus sylvatica}, author = {B. Jarčuška and R. Milla}, url = {https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/jpe/5/4/10.1093_jpe_rts004/2/rts004.pdf?Expires=1498315012&Signature=gMJ91p2sieHzGVBiSjU2~lCvxOY5V~TRjfXM5E-6CGt7nB5RIm23HVwhZg7qqcOosG2CNliXlpM~-DDkDphE6O1bv5-xLKQk4PrOf4D7LkHXqEhtSpe4kH9B47cejKf3f4PzZBuFZn98XP20DEDioTOU50IOejoOcGYGCONBBAeUyYHDMg4snZfzN6IE~DSlWzCYISIYAFtCaJPbxaTk8yty6zhjUvyh~zM3WsfNlPihgzA52exTtyCGOqbj10r15oYdSL9WTOniPw-AXOrG~DZrjwaV6ArCw9hXbS5I-57vDzG98wbuDlAju88Mn8Sr9JWaBDOrxhOcXuYkEsf7-w__&Key-Pair-Id=APKAIUCZBIA4LVPAVW3Q https://drive.google.com/file/d/0Bz8ojhHeiNclMjEwZjJlMDUtYzc5YS00NGFjLWI1NWUtNzM0OWI2ZTZlMjgz/view}, year = {2012}, date = {2012-12-31}, journal = {Journal of Plant Ecology}, volume = {5}, number = {4}, pages = {422-428}, abstract = {Aims The present study aims (i) to examine if recently reported interspecific shoot-level biomass allocational trade-offs, i.e. isometric trade-offs between leaf mass (LM) and stem mass (SM) and between leaf size and leaf number, hold intraspecifically and (ii) to explore whether those scaling relationships are independent of shoot type (i.e. long vs. short shoots). Methods In order to address our questions, we used Fagus sylvatica saplings growing under a broad light range that were sampled in the Western Carpathians Mountains (Slovakia). Important Findings We found that: (i) intraspecific shoot-level biomass allocational trade-offs differ from those reported interspecifically and that (ii) long and short shoots differ in biomass allocation scaling coefficients. Allometric relationships with slopes statistically smaller than 1.0 or higher than −1.0, were found between SM and LM and between mean leafing intensity and individual leaf mass, respectively, in long shoots. In contrast, isometric scaling was found in short shoots. This suggests that leaf mass in short shoots is unaffected by shoot stem mass, in contrast to long shoots. Short shoots also had a larger fraction of biomass allocated to leaves. Beech shoots, as has been observed in other shoot dimorphic species, are specialized, with short shoots specializing in carbon gain and long shoots in space acquisition. A greater shift in LM than in SM among species during speciation shifting from allometric intraspecific relationships to an isometric interspecific scaling relationship between those traits could explain the discrepancies between the outputs of the present intraspecific study and others similar studies. This study draws attention to the importance of considering shoot types in future studies dealing with allocation rules in species with dimorphic shoots.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Aims The present study aims (i) to examine if recently reported interspecific shoot-level biomass allocational trade-offs, i.e. isometric trade-offs between leaf mass (LM) and stem mass (SM) and between leaf size and leaf number, hold intraspecifically and (ii) to explore whether those scaling relationships are independent of shoot type (i.e. long vs. short shoots). Methods In order to address our questions, we used Fagus sylvatica saplings growing under a broad light range that were sampled in the Western Carpathians Mountains (Slovakia). Important Findings We found that: (i) intraspecific shoot-level biomass allocational trade-offs differ from those reported interspecifically and that (ii) long and short shoots differ in biomass allocation scaling coefficients. Allometric relationships with slopes statistically smaller than 1.0 or higher than −1.0, were found between SM and LM and between mean leafing intensity and individual leaf mass, respectively, in long shoots. In contrast, isometric scaling was found in short shoots. This suggests that leaf mass in short shoots is unaffected by shoot stem mass, in contrast to long shoots. Short shoots also had a larger fraction of biomass allocated to leaves. Beech shoots, as has been observed in other shoot dimorphic species, are specialized, with short shoots specializing in carbon gain and long shoots in space acquisition. A greater shift in LM than in SM among species during speciation shifting from allometric intraspecific relationships to an isometric interspecific scaling relationship between those traits could explain the discrepancies between the outputs of the present intraspecific study and others similar studies. This study draws attention to the importance of considering shoot types in future studies dealing with allocation rules in species with dimorphic shoots. Close https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/jpe/5/4/10.1[...] https://drive.google.com/file/d/0Bz8ojhHeiNclMjEwZjJlMDUtYzc5YS00NGFjLWI1NWUtNzM[...] Close
Zhang, R; Song, G; Qu, Y; Alstrőm, P; Ramos, R; Xing, X; Ericson, P G P; Fjeldså, J; Wang, H; Yang, X; Krištín, A; Shestopalov, A M; Choe, J.Ch.; Lei, F M Comparative phylogeography of two widespread magpies: importance of habitat preference and breeding behavior on genetic structure in China Journal Article Molecular Phylogenetics and Evolution, 65 (2), pp. 562–572, 2012. Links \| BibTeX @article{R.2012b, title = {Comparative phylogeography of two widespread magpies: importance of habitat preference and breeding behavior on genetic structure in China}, author = {R. Zhang and G. Song and Y. Qu and P. Alstrőm and R. Ramos and X. Xing and P.G.P. Ericson and J. Fjeldså and H. Wang and X. Yang and A. Krištín and A.M. Shestopalov and J.Ch. Choe and F.M. Lei}, url = {http://www.sciencedirect.com/science/article/pii/S1055790312002680}, year = {2012}, date = {2012-11-01}, journal = {Molecular Phylogenetics and Evolution}, volume = {65}, number = {2}, pages = {562–572}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.sciencedirect.com/science/article/pii/S1055790312002680 Close
Vlk, R; Balvín, O; Krištín, A; Marhoul, P; Hrúz, V Distribution of the Southern Oak Bush-cricket Meconema meridionale (Orthoptera, Tettigoniidae) in the Czech Republic and Slovakia Journal Article Folia Oecologica, 39 (2), pp. 155-165, 2012. BibTeX @article{VLK2012, title = {Distribution of the Southern Oak Bush-cricket Meconema meridionale (Orthoptera, Tettigoniidae) in the Czech Republic and Slovakia}, author = {R. Vlk and O. Balvín and A. Krištín and P. Marhoul and V. Hrúz}, year = {2012}, date = {2012-08-01}, journal = {Folia Oecologica}, volume = {39}, number = {2}, pages = {155-165}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Kaňuch, P; Jarčuška, B; Schlosserová, D; Sliacka, A; Paule, L; Krištín, A Landscape configuration determines gene flow and phenotype in a flightless forest-edge ground-dwelling bush-cricket, Pholidoptera griseoaptera Journal Article Evolutionary Ecology, 26 (6), pp. 1331–1343, 2012. Abstract \| Links \| BibTeX @article{Kaňuch2012, title = {Landscape configuration determines gene flow and phenotype in a flightless forest-edge ground-dwelling bush-cricket, \textit{Pholidoptera griseoaptera}}, author = {P. Kaňuch and B. Jarčuška and D. Schlosserová and A. Sliacka and L. Paule and A. Krištín}, url = {http://link.springer.com/article/10.1007/s10682-012-9571-5 https://docs.google.com/file/d/0Bz8ojhHeiNclMno0bFprOTJrYVU/edit}, doi = {10.1007/s10682-012-9571-5}, year = {2012}, date = {2012-04-18}, journal = {Evolutionary Ecology}, volume = {26}, number = {6}, pages = {1331–1343}, abstract = {Spatial configuration of habitats influences genetic structure and population fitness whereas it affects mainly species with limited dispersal ability. To reveal how habitat fragmentation determines dispersal and dispersal-related morphology in a ground-dispersing insect species we used a bush-cricket (Pholidoptera griseoaptera) which is associated with forest-edge habitat. We analysed spatial genetic patterns together with variability of the phenotype in two forested landscapes with different levels of fragmentation. While spatial configuration of forest habitats did not negatively affect genetic characteristics related to the fitness of sampled populations, genetic differentiation was found higher among populations from an extensive forest. Compared to an agricultural matrix between forest patches, the matrix of extensive forest had lower permeability and posed barriers for the dispersal of this species. Landscape configuration significantly affected also morphological traits that are supposed to account for species dispersal potential; individuals from fragmented forest patches had longer hind femurs and a higher femur to pronotum ratio. This result suggests that selection pressure act differently on populations from both landscape types since dispersal-related morphology was related to the level of habitat fragmentation. Thus observed patterns may be explained as plastic according to the level of landscape configuration; while anthropogenic fragmentation of habitats for this species can lead to homogenization of spatial genetic structure.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Spatial configuration of habitats influences genetic structure and population fitness whereas it affects mainly species with limited dispersal ability. To reveal how habitat fragmentation determines dispersal and dispersal-related morphology in a ground-dispersing insect species we used a bush-cricket (Pholidoptera griseoaptera) which is associated with forest-edge habitat. We analysed spatial genetic patterns together with variability of the phenotype in two forested landscapes with different levels of fragmentation. While spatial configuration of forest habitats did not negatively affect genetic characteristics related to the fitness of sampled populations, genetic differentiation was found higher among populations from an extensive forest. Compared to an agricultural matrix between forest patches, the matrix of extensive forest had lower permeability and posed barriers for the dispersal of this species. Landscape configuration significantly affected also morphological traits that are supposed to account for species dispersal potential; individuals from fragmented forest patches had longer hind femurs and a higher femur to pronotum ratio. This result suggests that selection pressure act differently on populations from both landscape types since dispersal-related morphology was related to the level of habitat fragmentation. Thus observed patterns may be explained as plastic according to the level of landscape configuration; while anthropogenic fragmentation of habitats for this species can lead to homogenization of spatial genetic structure. Close http://link.springer.com/article/10.1007/s10682-012-9571-5 https://docs.google.com/file/d/0Bz8ojhHeiNclMno0bFprOTJrYVU/edit doi:10.1007/s10682-012-9571-5 Close
Hoi, H; Krištín, A; Hoi, C Traditional versus non-traditional nest-site choice: alternative decision strategies for nest-site selection Journal Article Oecologia, 169 (1), pp. 117-124, 2012. Links \| BibTeX @article{H.2012, title = {Traditional versus non-traditional nest-site choice: alternative decision strategies for nest-site selection}, author = {H. Hoi and A. Krištín and C. Hoi}, url = {https://www.ncbi.nlm.nih.gov/pubmed/22086240}, year = {2012}, date = {2012-01-01}, journal = {Oecologia}, volume = {169}, number = {1}, pages = {117-124}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.ncbi.nlm.nih.gov/pubmed/22086240 Close
2011
Jarčuška, B Morphological plasticity of leaves in natural regeneration of Fagus sylvatica: effect of direct and diffuse light, ontogeny and shoot type Journal Article Polish Journal of Ecology, 59 , pp. 339–353, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011, title = {Morphological plasticity of leaves in natural regeneration of Fagus sylvatica: effect of direct and diffuse light, ontogeny and shoot type}, author = {B. Jarčuška }, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclZTM4NWQ3NmEtNTlmMS00MWRmLTkxMjMtNmZiNmQ4ZmU1ZWZl/view}, year = {2011}, date = {2011-12-31}, journal = {Polish Journal of Ecology}, volume = {59}, pages = {339–353}, abstract = {It is known that the role of accessible light as a growth-determining factor in beech natural regeneration rises in importance with growth of individuals. However, the accompanied changes in leaf traits underlying this shift in light demands are not well known. The aim of this study was to investigate influence of ontogenetic stage (0.5 m high ‘seedlings‘, 2.1 m ‘saplings‘), shoot type (terminal, lateral long and lateral short) and diffuse and direct light on morphological traits of leaves at spring-shoot-level in naturally regenerated beech individuals – shoot mean leaf area (mLA), shoot mean leaf weight (mLW), leaf mass per area (LMA), leaf area per shoot unit length (LAL), leaf mass per shoot unit length (LWL), number of leaves per shoot unit length (NLL), and ratio of mean-leaf width to its length (LSh). Ontogenetic drift affected the values of these traits; its influence depended on shoot type and component of light. The light explained more trait variability in saplings compared to seedlings (on average 45% vs 32%). The most evident shift was in the case of direct light – while direct light explained on average 18% of traits variability in seedlings, it was about 42% in saplings. The saplings compared with seedlings showed higher values of mLA, mLW, LMA, LAL on short shoots, LWL on lateral long and short shoots, LSh on terminal and lateral long shoots, and lower NLL values on terminal and long lateral shoots. Plastic response to light was higher in saplings than in seedlings (except mLA). Generally, the observed traits showed more plastic response to diffuse than to direct light in seedlings; the response of saplings was similar in both light components. The most plastic trait was LMA, the least LSh. Individuals of saplings displayed higher plasticity in traits close correlating with annual length growth of main axis, which suggests that saplings would benefit from increased light availability more than seedlings. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close It is known that the role of accessible light as a growth-determining factor in beech natural regeneration rises in importance with growth of individuals. However, the accompanied changes in leaf traits underlying this shift in light demands are not well known. The aim of this study was to investigate influence of ontogenetic stage (0.5 m high ‘seedlings‘, 2.1 m ‘saplings‘), shoot type (terminal, lateral long and lateral short) and diffuse and direct light on morphological traits of leaves at spring-shoot-level in naturally regenerated beech individuals – shoot mean leaf area (mLA), shoot mean leaf weight (mLW), leaf mass per area (LMA), leaf area per shoot unit length (LAL), leaf mass per shoot unit length (LWL), number of leaves per shoot unit length (NLL), and ratio of mean-leaf width to its length (LSh). Ontogenetic drift affected the values of these traits; its influence depended on shoot type and component of light. The light explained more trait variability in saplings compared to seedlings (on average 45% vs 32%). The most evident shift was in the case of direct light – while direct light explained on average 18% of traits variability in seedlings, it was about 42% in saplings. The saplings compared with seedlings showed higher values of mLA, mLW, LMA, LAL on short shoots, LWL on lateral long and short shoots, LSh on terminal and lateral long shoots, and lower NLL values on terminal and long lateral shoots. Plastic response to light was higher in saplings than in seedlings (except mLA). Generally, the observed traits showed more plastic response to diffuse than to direct light in seedlings; the response of saplings was similar in both light components. The most plastic trait was LMA, the least LSh. Individuals of saplings displayed higher plasticity in traits close correlating with annual length growth of main axis, which suggests that saplings would benefit from increased light availability more than seedlings. Close https://drive.google.com/file/d/0Bz8ojhHeiNclZTM4NWQ3NmEtNTlmMS00MWRmLTkxMjMtNmZ[...] Close
Naďo, L; Ceľuch, M; Ševčík, M; Kaňuch, P Tree roosts and competitors of Nyctalus noctula in the Sihoť town park, Nitra, Slovakia Journal Article Vespertilio, 15 , pp. 71-77, 2011, ISSN: 1213-6123. Abstract \| Links \| BibTeX @article{Naďo2011, title = {Tree roosts and competitors of \textit{Nyctalus noctula} in the Sihoť town park, Nitra, Slovakia}, author = {L. Naďo and M. Ceľuch and M. Ševčík and P. Kaňuch}, url = {http://www.ceson.org/vespertilio/15/nado2012vesp.pdf}, issn = {1213-6123}, year = {2011}, date = {2011-01-01}, journal = {Vespertilio}, volume = {15}, pages = {71-77}, abstract = {Old parks provide roosting opportunities for tree-dwelling species in an extensively urbanized landscape. We compared morphological characteristics of roosts inhabited by Nyctalus noctula bats with those of other species such as birds and socially living insects, to find preferences of various tree-dwelling guilds. Morphological characteristics of roosts used by N. noctula did not significantly differ from those of other tree-dwelling species, and the analysis revealed a large degree of overlap in their realised niches. Especially bats and birds used hollows with common attributes. Hence, a question arises about possible competition for tree hollows among different groups of dwellers.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Old parks provide roosting opportunities for tree-dwelling species in an extensively urbanized landscape. We compared morphological characteristics of roosts inhabited by Nyctalus noctula bats with those of other species such as birds and socially living insects, to find preferences of various tree-dwelling guilds. Morphological characteristics of roosts used by N. noctula did not significantly differ from those of other tree-dwelling species, and the analysis revealed a large degree of overlap in their realised niches. Especially bats and birds used hollows with common attributes. Hence, a question arises about possible competition for tree hollows among different groups of dwellers. Close http://www.ceson.org/vespertilio/15/nado2012vesp.pdf Close
Barna, M; Jarčuška, B Prirodzená obnova buka [Natural regeneration of beech] Book Chapter Barna, M; Kulfan, J; Bublinec, E (Ed.): Buk a bukové ekosystémy Slovenska, Chapter 11, pp. 227-248, Veda, Bratislava, 2011. Links \| BibTeX @inbook{Barna2011, title = {Prirodzená obnova buka [Natural regeneration of beech]}, author = {M. Barna and B. Jarčuška }, editor = {M. Barna and J. Kulfan and E. Bublinec }, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclNWYwNzY4ZGMtYzQwYi00OGI2LThhNjQtMTU3NzA4NTc2OTQ3/view}, year = {2011}, date = {2011-01-01}, booktitle = {Buk a bukové ekosystémy Slovenska}, pages = {227-248}, publisher = {Veda}, address = {Bratislava}, chapter = {11}, keywords = {}, pubstate = {published}, tppubtype = {inbook} } Close https://drive.google.com/file/d/0Bz8ojhHeiNclNWYwNzY4ZGMtYzQwYi00OGI2LThhNjQtMTU[...] Close
Jarčuška, B; Barna, M Influence of light availability on height growth of naturally regenerated beech with different growth histories Journal Article Austrian Journal of Forest Science, 128 , pp. 53-65, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011, title = { Influence of light availability on height growth of naturally regenerated beech with different growth histories}, author = {B. Jarčuška and M. Barna}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclNmEwNTkwODEtM2NjNC00Yzk3LTgwZDEtNTczYTQ3Y2ViZTZh/view}, year = {2011}, date = {2011-01-01}, journal = {Austrian Journal of Forest Science}, volume = {128}, pages = {53-65}, abstract = {We studied the influence of diffuse light supply on height growth dynamics in European beech natural regeneration. We evaluated the annual growth of the main axis over 5 yrs in 7-yr-old seedlings germinated 1 yr after a canopy release, and in 12-yr-old individuals of advance regeneration germinated 5 yrs before the release. In the advance regeneration, a significant response of annual growth to diffuse light was recorded six years after the canopy release. The correlation between the initial height and annual shoot growth in the seedlings over the study period was high (R2 ranged between Seite 54 Benjamín Jarcuška and Milan Barna 0.38 – 0.58); on the other hand, in the advance regeneration, significant correlation was not observed until the 7-th year after the overstory canopy release. We discuss the possible causes underlying the delay of height growth response to the current – modified light conditions in the advance regeneration.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close We studied the influence of diffuse light supply on height growth dynamics in European beech natural regeneration. We evaluated the annual growth of the main axis over 5 yrs in 7-yr-old seedlings germinated 1 yr after a canopy release, and in 12-yr-old individuals of advance regeneration germinated 5 yrs before the release. In the advance regeneration, a significant response of annual growth to diffuse light was recorded six years after the canopy release. The correlation between the initial height and annual shoot growth in the seedlings over the study period was high (R2 ranged between Seite 54 Benjamín Jarcuška and Milan Barna 0.38 – 0.58); on the other hand, in the advance regeneration, significant correlation was not observed until the 7-th year after the overstory canopy release. We discuss the possible causes underlying the delay of height growth response to the current – modified light conditions in the advance regeneration. Close https://drive.google.com/file/d/0Bz8ojhHeiNclNmEwNTkwODEtM2NjNC00Yzk3LTgwZDEtNTc[...] Close
Jarčuška, B; Barna, M Plasticity in above-ground biomass allocation in Fagus sylvatica L. saplings in response to light availability Journal Article Annals of Forest Research, 54 , pp. 151-160, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011c, title = {Plasticity in above-ground biomass allocation in Fagus sylvatica L. saplings in response to light availability}, author = {B. Jarčuška and M. Barna }, url = {http://www.editurasilvica.ro/afr/54/2/jarcuska.pdf}, year = {2011}, date = {2011-01-01}, journal = {Annals of Forest Research}, volume = {54}, pages = {151-160}, abstract = {The paper presents the production and allocation of aboveground biomass in 7-yr-old saplings of European beech (Fagus sylvatica L.) growing along an environmental gradient with a total light transmittance (Tot) ranging from 6% to 80%. Non-overtopped individuals, not suppressed by surrounding saplings were sampled at the end of growing season. The total aboveground biomass production on the gradient varied within 1.7-261.0. Light in the log-log linear relationship accounted for 83% of this variability. The plants growing in the shade had lower mass of aboveground compartments, lower total leaf area, higher fraction of biomass allocated in foliar mass and lower in the in the woody mass compared to the plants growing in the high-light environment. The major changes in effects of light availability on biomass allocation occurred up to about 20% of Tot. Decreasing accessible light was responsible for a non-linear increase in interceptive leaf area per unit of biomass and decrease in amount of biomass allocated per a unit of branch and stem length – necessary for leaf display. There was a close correlation between mass of aboveground plant compartments, documented by Pearson’s r values of 0.98-0.99. Accompanied with different plant size, observed differences in biomass partitioning in response to light could be viewed as plastic adjustment to environmental heterogeneity in even-aged European beech saplings.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The paper presents the production and allocation of aboveground biomass in 7-yr-old saplings of European beech (Fagus sylvatica L.) growing along an environmental gradient with a total light transmittance (Tot) ranging from 6% to 80%. Non-overtopped individuals, not suppressed by surrounding saplings were sampled at the end of growing season. The total aboveground biomass production on the gradient varied within 1.7-261.0. Light in the log-log linear relationship accounted for 83% of this variability. The plants growing in the shade had lower mass of aboveground compartments, lower total leaf area, higher fraction of biomass allocated in foliar mass and lower in the in the woody mass compared to the plants growing in the high-light environment. The major changes in effects of light availability on biomass allocation occurred up to about 20% of Tot. Decreasing accessible light was responsible for a non-linear increase in interceptive leaf area per unit of biomass and decrease in amount of biomass allocated per a unit of branch and stem length – necessary for leaf display. There was a close correlation between mass of aboveground plant compartments, documented by Pearson’s r values of 0.98-0.99. Accompanied with different plant size, observed differences in biomass partitioning in response to light could be viewed as plastic adjustment to environmental heterogeneity in even-aged European beech saplings. Close http://www.editurasilvica.ro/afr/54/2/jarcuska.pdf Close
Jarčuška, B Is preformation of future shoots in Fagus sylvatica L. buds reflected in bud/sprouted shoot traits relationships? Journal Article Dendrobiology, 66 , pp. 25-31, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011c, title = {Is preformation of future shoots in Fagus sylvatica L. buds reflected in bud/sprouted shoot traits relationships?}, author = {B. Jarčuška}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclZWIyZjhmYjUtYzlmNi00ZTAxLTliYjQtM2M3ZGQ1NGI1MGY1/view}, year = {2011}, date = {2011-01-01}, journal = {Dendrobiology}, volume = {66}, pages = {25-31}, abstract = {The present study was aimed to find out whether the preformation of future shoot’s organs within a bud is reflected in the bud size/shoot functional traits’ size relationships. The survey attempts to evaluate whether relationships between the bud mass and stem mass, leaf mass, leaf area, total mass and number of leaves, respectively, of spring-shoot sprouted by the bud in Fagus sylvatica (L.) saplings are affected by parental bud location within shoot and parental shoot type. Dry mass of the terminal bud, the first and the last lateral buds placed on terminal and uppermost lateral shoots was estimated nondestructively for 58 beech saplings in December 2008. The shoots sprouted from the measured buds were sampled at the end of growing season, in August 2009. Bud mass, parental shoot type and bud location explained about 90% of shoot traits variability in full-factorial ANOVA. The leaf mass was the only shoot trait not affected by parental shoot type and bud location within shoot in scaling relationship with bud mass. There was not found differences among intercepts across parental shoot types and bud locations, however significant shift along common slope was observed among them. The presented findings could be viewed as a confirmation of the preformation and full development of leaf primordia within the European beech buds prior to bud burst. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The present study was aimed to find out whether the preformation of future shoot’s organs within a bud is reflected in the bud size/shoot functional traits’ size relationships. The survey attempts to evaluate whether relationships between the bud mass and stem mass, leaf mass, leaf area, total mass and number of leaves, respectively, of spring-shoot sprouted by the bud in Fagus sylvatica (L.) saplings are affected by parental bud location within shoot and parental shoot type. Dry mass of the terminal bud, the first and the last lateral buds placed on terminal and uppermost lateral shoots was estimated nondestructively for 58 beech saplings in December 2008. The shoots sprouted from the measured buds were sampled at the end of growing season, in August 2009. Bud mass, parental shoot type and bud location explained about 90% of shoot traits variability in full-factorial ANOVA. The leaf mass was the only shoot trait not affected by parental shoot type and bud location within shoot in scaling relationship with bud mass. There was not found differences among intercepts across parental shoot types and bud locations, however significant shift along common slope was observed among them. The presented findings could be viewed as a confirmation of the preformation and full development of leaf primordia within the European beech buds prior to bud burst. Close https://drive.google.com/file/d/0Bz8ojhHeiNclZWIyZjhmYjUtYzlmNi00ZTAxLTliYjQtM2M[...] Close
2010
Jarčuška, B; Kucbel, S; Jaloviar, P Comparison of output results from two programmes for hemispherical image analysis: Gap Light Analyser and WinScanopy Journal Article Journal of Forest Science, 56 , pp. 147–153, 2010. Abstract \| Links \| BibTeX @article{Jarčuška2010, title = {Comparison of output results from two programmes for hemispherical image analysis: Gap Light Analyser and WinScanopy}, author = {B. Jarčuška and S. Kucbel and P. Jaloviar}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclcVZaa0xlSFFTbUtVeDhhT3dYR0M0QQ/view}, year = {2010}, date = {2010-01-01}, journal = {Journal of Forest Science}, volume = {56}, pages = {147–153}, abstract = {We compare the results of the analysis of hemispherical images (of a broadleaved and a coniferous forest) obtained using the Gap Light Analyser (GLA) software and the results obtained by analyzing the same images with the aid of WinScanopy. The two packages were used to calculate relative total, relative diffuse and relative direct transmittance, canopy openness, and leaf area index. Our aim was to find out whether it is possible to compare the studies using different software packages for determining light conditions. The binary pixel classification of images of canopy and sky was performed automatically (in the case of Gap Light Analyser, using the SideLook programme). The threshold values determined by the SideLook programme were lower compared to the WinScanopy, which was also reflected in the evaluated output results. There was a strong positive correlation between the results obtained with the two software packages (R2 ranges from 0.814 to 0.999). However, when the Gap Light Analyser analysis was applied to the threshold values obtained with the SideLook, the output results mostly manifested systematic differences in comparison with the output results obtained using the WinScanopy. Using the same threshold value in both programmes, the differences between the output values were quite small (a minimum of 0.038 m2.m–2 for LAI in the spruce forest and a maximum of 0.738% for total relative transmittance also in the spruce forest). The differences in some characteristics were statistically significant, on the other hand, both the photo series had only the identical direct transmittance values. The observed differences can be explained by differences in the calibration of the used camera-lens pair, different image registration techniques and different theoretical background and models used in the two software packages. It follows that it is also necessary to be aware of possible differences when comparing the outputs of the two compared software packages analyzing photos obtained applying the same methodical approach.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close We compare the results of the analysis of hemispherical images (of a broadleaved and a coniferous forest) obtained using the Gap Light Analyser (GLA) software and the results obtained by analyzing the same images with the aid of WinScanopy. The two packages were used to calculate relative total, relative diffuse and relative direct transmittance, canopy openness, and leaf area index. Our aim was to find out whether it is possible to compare the studies using different software packages for determining light conditions. The binary pixel classification of images of canopy and sky was performed automatically (in the case of Gap Light Analyser, using the SideLook programme). The threshold values determined by the SideLook programme were lower compared to the WinScanopy, which was also reflected in the evaluated output results. There was a strong positive correlation between the results obtained with the two software packages (R2 ranges from 0.814 to 0.999). However, when the Gap Light Analyser analysis was applied to the threshold values obtained with the SideLook, the output results mostly manifested systematic differences in comparison with the output results obtained using the WinScanopy. Using the same threshold value in both programmes, the differences between the output values were quite small (a minimum of 0.038 m2.m–2 for LAI in the spruce forest and a maximum of 0.738% for total relative transmittance also in the spruce forest). The differences in some characteristics were statistically significant, on the other hand, both the photo series had only the identical direct transmittance values. The observed differences can be explained by differences in the calibration of the used camera-lens pair, different image registration techniques and different theoretical background and models used in the two software packages. It follows that it is also necessary to be aware of possible differences when comparing the outputs of the two compared software packages analyzing photos obtained applying the same methodical approach. Close https://drive.google.com/file/d/0Bz8ojhHeiNclcVZaa0xlSFFTbUtVeDhhT3dYR0M0QQ/view Close
Jarčuška, B Allometry of winter buds in beech (Fagus sylvatica L.) natural regeneration with respect to its volume and dry weight estimation. Journal Article Folia Oecologica, 37 (1), pp. 42-50, 2010. Abstract \| Links \| BibTeX @article{Jarčuška2010b, title = {Allometry of winter buds in beech (Fagus sylvatica L.) natural regeneration with respect to its volume and dry weight estimation. }, author = {B Jarčuška}, url = {http://ife.sk/wp-content/uploads/2016/10/FO_37_1_jarčuska.pdf}, year = {2010}, date = {2010-01-01}, journal = {Folia Oecologica}, volume = {37}, number = {1}, pages = {42-50}, abstract = {Allometric relationships among bud’s fresh volume (V), length (L), maximal diameter (MD), basal diameter (BD), and dry weight (W) in beech (Fagus sylvatica L.) saplings manifest strong mutual correlations. These correlations depend on the bud type determined by bud position on shoot, shoot type and shoot position in crown. However, in most cases the differences among the bud types are not distinct – individual types can be classified into several overlapping groups. The bud type significantly influences bud shape characterised by the ratios of BD to MD, and BD to L; on the other hand, it has no influence on MD/L and bud density (V/W). Influence of accessible light on bud shape and density also depends on bud type. For non-destructive estimation of V and W, we have prepared a regression model using as independent variable the volume of cylinder enclosing the bud (Vcyl). This model could explain 98% of the variation in V and W, with a relative accuracy of 6.4% for V, and 5.4% for W (P = 0.95). The performance of the model was verified by a test allowing us to conclude that the model outputs are comparable with directly measured values.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Allometric relationships among bud’s fresh volume (V), length (L), maximal diameter (MD), basal diameter (BD), and dry weight (W) in beech (Fagus sylvatica L.) saplings manifest strong mutual correlations. These correlations depend on the bud type determined by bud position on shoot, shoot type and shoot position in crown. However, in most cases the differences among the bud types are not distinct – individual types can be classified into several overlapping groups. The bud type significantly influences bud shape characterised by the ratios of BD to MD, and BD to L; on the other hand, it has no influence on MD/L and bud density (V/W). Influence of accessible light on bud shape and density also depends on bud type. For non-destructive estimation of V and W, we have prepared a regression model using as independent variable the volume of cylinder enclosing the bud (Vcyl). This model could explain 98% of the variation in V and W, with a relative accuracy of 6.4% for V, and 5.4% for W (P = 0.95). The performance of the model was verified by a test allowing us to conclude that the model outputs are comparable with directly measured values. Close http://ife.sk/wp-content/uploads/2016/10/FO_37_1_jarčuska.pdf Close
2009
Jarčuška, B Growth, survival, density, biomass partitioning and morphological adaptations of natural regeneration in Fagus sylvatica. A review Journal Article Dendrobiology, 61 , pp. 3-11, 2009. Abstract \| Links \| BibTeX @article{Jarčuška2009, title = {Growth, survival, density, biomass partitioning and morphological adaptations of natural regeneration in Fagus sylvatica. A review}, author = {B. Jarčuška}, url = {http://www.idpan.poznan.pl/images/stories/dendrobiology/vol61/61_03_11.pdf}, year = {2009}, date = {2009-01-01}, journal = {Dendrobiology}, volume = {61}, pages = {3-11}, abstract = {Beech is an important woody species in terms of ecology, and it also has a considerable commercial value. This fact is also reflectedin a high number of scientific papers handling the issue of natural regeneration of this woody plant. The aim of this review is to analyse influence of resources availability and impact of other factors (competition) on height and diameter growth, survival, density, biomass partitioning and morphological adjustment in naturally regenerated beech seedlings and saplings. It pays a particular attention to light – the factor that influences, directly or indirectly, other environmental factors, and consequently, has the key influence on the performance of beech natural regeneration. This contribution includes information about e.g. shade tolerance and mortality-light relationships, ability to increase growth under improved light conditions, dependence of trees growth on their individual size and age etc. In spite of a large number of papers handling the issue of research on beech natural regeneration, growth responses in individual plants are difficult to predict, because the factors involved are numerous. Thus, the process of natural regeneration is in fact interactive, and even retroactive: any change in one of the involved factors induces adjustments of the others. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Beech is an important woody species in terms of ecology, and it also has a considerable commercial value. This fact is also reflectedin a high number of scientific papers handling the issue of natural regeneration of this woody plant. The aim of this review is to analyse influence of resources availability and impact of other factors (competition) on height and diameter growth, survival, density, biomass partitioning and morphological adjustment in naturally regenerated beech seedlings and saplings. It pays a particular attention to light – the factor that influences, directly or indirectly, other environmental factors, and consequently, has the key influence on the performance of beech natural regeneration. This contribution includes information about e.g. shade tolerance and mortality-light relationships, ability to increase growth under improved light conditions, dependence of trees growth on their individual size and age etc. In spite of a large number of papers handling the issue of research on beech natural regeneration, growth responses in individual plants are difficult to predict, because the factors involved are numerous. Thus, the process of natural regeneration is in fact interactive, and even retroactive: any change in one of the involved factors induces adjustments of the others. Close http://www.idpan.poznan.pl/images/stories/dendrobiology/vol61/61_03_11.pdf Close
Jarčuška, B Zaujímavé dendrologické nálezy z východnej časti Levočských vrchov a západnej časti Bachurne. Journal Article Natura Carpatica, 50 , pp. 121-124, 2009. Abstract \| Links \| BibTeX @article{Jarčuška2009b, title = {Zaujímavé dendrologické nálezy z východnej časti Levočských vrchov a západnej časti Bachurne.}, author = {B. Jarčuška}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclMjQ5YTcyYzItMDA2NC00M2Y3LTk2MjYtM2YzMzU0ZTc0M2Qy/view?ddrp=1&hl=en#}, year = {2009}, date = {2009-01-01}, journal = {Natura Carpatica}, volume = {50}, pages = {121-124}, abstract = {With this contribution we confirm occurrence of the species Alnus glutinosa, Acer campestre, Carpinus betulus in eastern parts of the Levocske vrchy Mts and Sorbus aria in western part of the Bachuren Mts (valley of the Torysa River). The presence of these speciesin this area has not been documented yet. We also report a new locality (the second known) with Pinus mugo in the Levocske vrchy Mts - the most eastern locality with natural occurrence of this woody plant in Slovakia.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close With this contribution we confirm occurrence of the species Alnus glutinosa, Acer campestre, Carpinus betulus in eastern parts of the Levocske vrchy Mts and Sorbus aria in western part of the Bachuren Mts (valley of the Torysa River). The presence of these speciesin this area has not been documented yet. We also report a new locality (the second known) with Pinus mugo in the Levocske vrchy Mts - the most eastern locality with natural occurrence of this woody plant in Slovakia. Close https://drive.google.com/file/d/0Bz8ojhHeiNclMjQ5YTcyYzItMDA2NC00M2Y3LTk2MjYtM2Y[...] Close
Jarčuška, B Ľalia cibuľkonosná pravá (Lilium bulbiferum L. subsp. bulbiferum) v blízkosti Brezovice (východné Slovensko) Journal Article Natura Carpatica, 50 , pp. 137-140, 2009. Abstract \| Links \| BibTeX @article{Jarčuška2009b, title = {Ľalia cibuľkonosná pravá (Lilium bulbiferum L. subsp. bulbiferum) v blízkosti Brezovice (východné Slovensko)}, author = {B. Jarčuška}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclM2U2YjY4OTUtNzVjYy00MDE1LThhYjctYTdmYmFjZDQ5YThl/view?ddrp=1&hl=en#}, year = {2009}, date = {2009-01-01}, journal = {Natura Carpatica}, volume = {50}, pages = {137-140}, abstract = {This contribution brings data about a locality with occurrence of orange lily (Lilium bulbiferum L. subsp. bulbiferum) in the vicinity of the village Brezovica (Sabinov district, Eastern Slovakia), Bachuren Mts. We have found there 40 flowering individuals and 122 infertile individuals of this in-Slovakia-vulnerable species in June 2009.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close This contribution brings data about a locality with occurrence of orange lily (Lilium bulbiferum L. subsp. bulbiferum) in the vicinity of the village Brezovica (Sabinov district, Eastern Slovakia), Bachuren Mts. We have found there 40 flowering individuals and 122 infertile individuals of this in-Slovakia-vulnerable species in June 2009. Close https://drive.google.com/file/d/0Bz8ojhHeiNclM2U2YjY4OTUtNzVjYy00MDE1LThhYjctYTd[...] Close
2008
Jaloviar, P; Jarčuška, B; Sarvašová, I Influence of substrate kind and cultivation technology on quantitative characteristic of spruce (Picea abies (L.) Karst.) seedlings´ root systems: comparison between quantitative traits. Journal Article Folia Oekologica, 35 (2) , pp. 25-32, 2008. Abstract \| Links \| BibTeX @article{Jaloviar2008, title = { Influence of substrate kind and cultivation technology on quantitative characteristic of spruce (Picea abies (L.) Karst.) seedlings´ root systems: comparison between quantitative traits.}, author = {P. Jaloviar and B. Jarčuška and I. Sarvašová }, url = {http://ife.sk/wp-content/uploads/2016/10/FO_35_2_jaloviar.pdf}, year = {2008}, date = {2008-01-01}, journal = {Folia Oekologica}, volume = {35 (2)}, pages = {25-32}, abstract = {This work deals with evaluation of influence of four different management methods and substrate types on basic quantitative parameters of root systems in one-year old spruce (Picea abies (L.) Karst.) seedlings. There were tested differences between three alternatives consisting of bare-rooted plants and one variant of ball plants grown under applying the technique Lännen Plantek. The bare-rooted seedlings were cultivated in pure peat substrate (control) and in peat substrates supplemented with alginite and Baktomix. The tested traits were the following: root system weight, length, surface, volume, mean diameter and number of endings. For testing differences between the mean values of these characteristics, we used variance analysis. There has been found that in all the evaluated traits, the highest values were obtained with using the method Lännen Plantek. These values were several times higher that the next lower value. The variability of the measured values was about 30%. The lowest mean values were obtained in case of the peat substrate enriched with alginite. There is supposed that alginite caused water-logging of substrate and significantly retarded growth under the wetting regime favourable for all the other variants.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close This work deals with evaluation of influence of four different management methods and substrate types on basic quantitative parameters of root systems in one-year old spruce (Picea abies (L.) Karst.) seedlings. There were tested differences between three alternatives consisting of bare-rooted plants and one variant of ball plants grown under applying the technique Lännen Plantek. The bare-rooted seedlings were cultivated in pure peat substrate (control) and in peat substrates supplemented with alginite and Baktomix. The tested traits were the following: root system weight, length, surface, volume, mean diameter and number of endings. For testing differences between the mean values of these characteristics, we used variance analysis. There has been found that in all the evaluated traits, the highest values were obtained with using the method Lännen Plantek. These values were several times higher that the next lower value. The variability of the measured values was about 30%. The lowest mean values were obtained in case of the peat substrate enriched with alginite. There is supposed that alginite caused water-logging of substrate and significantly retarded growth under the wetting regime favourable for all the other variants. Close http://ife.sk/wp-content/uploads/2016/10/FO_35_2_jaloviar.pdf Close

2019
Heller, K-G; Hemp, C; Massa, B; Rakotondranary, J; Krištín, A Notes on a small collection of phaneropterine bush-crickets (Insecta: Orthoptera: Tettigonioidea) from Central and Southern Madagascar with the description of two new species Journal Article Zootaxa, 4563 (2), pp. 297–310, 2019. BibTeX @article{Heller2019, title = {Notes on a small collection of phaneropterine bush-crickets (Insecta: Orthoptera: Tettigonioidea) from Central and Southern Madagascar with the description of two new species}, author = {K-G Heller and C Hemp and B Massa and J Rakotondranary and A Krištín}, year = {2019}, date = {2019-04-16}, journal = {Zootaxa}, volume = {4563}, number = {2}, pages = {297–310}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
2018
Iorgu, I S; Krištín, A; Szövényi, G; Kaňuch, P; Jarčuška, B; Sahlean, T; Iorgu, E I; Orci, K M Distinctive male–female acoustic duetting supports the specific status of Isophya fatrensis, a West-Carpathian endemic bush-cricket (Insecta: Orthoptera: Tettigoniidae: Phaneropterinae) Journal Article Bioacoustics , pp. 1-14, 2018. Links \| BibTeX @article{IORGU2017, title = {Distinctive male–female acoustic duetting supports the specific status of \textit{Isophya fatrensis}, a West-Carpathian endemic bush-cricket (Insecta: Orthoptera: Tettigoniidae: Phaneropterinae)}, author = {I.S. Iorgu and A. Krištín and G. Szövényi and P. Kaňuch and B. Jarčuška and T. Sahlean and E.I. Iorgu and K.M. Orci}, url = {http://www.tandfonline.com/doi/abs/10.1080/09524622.2016.1272005?journalCode=tbio20}, doi = {DOI: 10.1080/09524622.2016.1272005 }, year = {2018}, date = {2018-02-01}, journal = {Bioacoustics }, pages = {1-14}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.tandfonline.com/doi/abs/10.1080/09524622.2016.1272005?journalCode=tbi[...] doi:DOI: 10.1080/09524622.2016.1272005 Close
2017
Nusová, G; Šemeláková, M; Paučulová, L; Uhrin, M; Kaňuch, Peter Haplotype diversity in common pipistrelle’s mass hibernacula from central Europe Journal Article Biologia (Bratislava), 72 (5), pp. 548-553, 2017, ISSN: 1336-9563. Abstract \| Links \| BibTeX @article{Nusová2017, title = {Haplotype diversity in common pipistrelle’s mass hibernacula from central Europe}, author = {G. Nusová and M. Šemeláková and L. Paučulová and M. Uhrin and Peter Kaňuch}, url = {https://www.degruyter.com/view/j/biolog.2017.72.issue-5/biolog-2017-0061/biolog-2017-0061.xml}, doi = {https://doi.org/10.1515/biolog-2017-0061}, issn = {1336-9563}, year = {2017}, date = {2017-05-30}, journal = {Biologia (Bratislava)}, volume = {72}, number = {5}, pages = {548-553}, abstract = {Mass hibernacula of several tens of thousands of Pipistrellus pipistrellus associated with the swarming of bats during seasonal movements should serve as important sites of gene flow in this species. The massive occurrence of hibernating bats which is observed in few caves in the Carpathian Mountains encourages the idea that the genetic diversity at these sites will be greater comparing to known situation in surrounding region. This study aimed to determine the genetic diversity of individuals that aggregate in two such caves in Slovakia and Romania with the help of a common and available genetic marker. Using an mtDNA cytochrome b, 571 bp long fragment, very low haplotype diversity was found within both mass hibernacula of P. pipistrellus (15 haplotypes only, from which one significantly predominated with > 80% in both caves). The initial screening did not suggest that hibernating bats migrated to mass hibernacula from remote areas behind central European region. However, reliable study of the species’ migratory behaviour is required to understand more about the phenomenon of the mass hibernacula of these bats.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Mass hibernacula of several tens of thousands of Pipistrellus pipistrellus associated with the swarming of bats during seasonal movements should serve as important sites of gene flow in this species. The massive occurrence of hibernating bats which is observed in few caves in the Carpathian Mountains encourages the idea that the genetic diversity at these sites will be greater comparing to known situation in surrounding region. This study aimed to determine the genetic diversity of individuals that aggregate in two such caves in Slovakia and Romania with the help of a common and available genetic marker. Using an mtDNA cytochrome b, 571 bp long fragment, very low haplotype diversity was found within both mass hibernacula of P. pipistrellus (15 haplotypes only, from which one significantly predominated with > 80% in both caves). The initial screening did not suggest that hibernating bats migrated to mass hibernacula from remote areas behind central European region. However, reliable study of the species’ migratory behaviour is required to understand more about the phenomenon of the mass hibernacula of these bats. Close https://www.degruyter.com/view/j/biolog.2017.72.issue-5/biolog-2017-0061/biolog-[...] doi:https://doi.org/10.1515/biolog-2017-0061 Close
Kaňuch, P; Dorková, M; Mikhailenko, A P; Polumordvinov, O A; Jarčuška, B; Krištín, A Isolated populations of the bush-cricket Pholidoptera frivaldszkyi (Orthoptera, Tettigoniidae) in Russia suggest a disjunct area of the species distribution Journal Article ZooKeys, 665 , pp. 85-92, 2017. Abstract \| Links \| BibTeX @article{P.2017, title = {Isolated populations of the bush-cricket \textit{Pholidoptera frivaldszkyi} (Orthoptera, Tettigoniidae) in Russia suggest a disjunct area of the species distribution}, author = {P. Kaňuch and M. Dorková and A.P. Mikhailenko and O.A. Polumordvinov and B. Jarčuška and A. Krištín}, editor = {Z.F. Montealegre}, url = {https://zookeys.pensoft.net/article/12339/list/8/}, doi = {10.3897/zookeys.665.12339}, year = {2017}, date = {2017-04-04}, journal = {ZooKeys}, volume = {665}, pages = {85-92}, abstract = {Phylogenetic analysis and assessment of the species status of mostly isolated populations of Pholidoptera frivaldszkyi in south-western Russia occurring far beyond the accepted area of the species distribution in the Carpathian-Balkan region were performed. Using the mitochondrial DNA cytochrome c oxidase subunit I gene fragment, we found a very low level of genetic diversity in these populations. Phylogeographic reconstruction did not support recent introduction events but rather historical range fragmentation. The grouping of the Russian and Romanian haplotypes in a distinct phylogenetic clade suggests that the pre-glacial range of P. frivaldszkyi had extended towards the Ponto-Caspian region, with considerable gene flow between different refugia. However, post-glacial northward expansion of the species from supposed Caucasus refugia contributed most likely to the current disjunct distribution of this relict-like bush-cricket.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Phylogenetic analysis and assessment of the species status of mostly isolated populations of Pholidoptera frivaldszkyi in south-western Russia occurring far beyond the accepted area of the species distribution in the Carpathian-Balkan region were performed. Using the mitochondrial DNA cytochrome c oxidase subunit I gene fragment, we found a very low level of genetic diversity in these populations. Phylogeographic reconstruction did not support recent introduction events but rather historical range fragmentation. The grouping of the Russian and Romanian haplotypes in a distinct phylogenetic clade suggests that the pre-glacial range of P. frivaldszkyi had extended towards the Ponto-Caspian region, with considerable gene flow between different refugia. However, post-glacial northward expansion of the species from supposed Caucasus refugia contributed most likely to the current disjunct distribution of this relict-like bush-cricket. Close https://zookeys.pensoft.net/article/12339/list/8/ doi:10.3897/zookeys.665.12339 Close
Krištín, A; Kaňuch, P Stay or go? Strong winter feeding site fidelity in small woodland passerines revealed by a homing experiment. Journal Article Journal of Ornithology, 158 (1), pp. 53-61, 2017, ISSN: 0021-8375. Abstract \| Links \| BibTeX @article{KRIŠTÍN2017, title = {Stay or go? Strong winter feeding site fidelity in small woodland passerines revealed by a homing experiment. }, author = {A. Krištín and P. Kaňuch}, url = {https://link.springer.com/article/10.1007/s10336-016-1362-2}, doi = {https://doi.org/10.1007/s10336-016-1362-2}, issn = {0021-8375}, year = {2017}, date = {2017-01-01}, journal = {Journal of Ornithology}, volume = {158}, number = {1}, pages = {53-61}, abstract = {Many birds exhibit territoriality, which is vital for obtaining resources for survival. Non-migratory birds maintain larger territories in winter than during reproduction, but the degree of their fidelity to these winter home ranges is less well-known. We evaluated the homing success and time of return to home through a field experiment in which we trapped and displaced 1239 individual birds of two tit species, Great Tit (Parus major) and Blue Tit (Cyanistes caeruleus), and retrapped 267 of them over two winters (a total of 40 trapping sessions). Displacement of the birds between two sites 7.8 km apart revealed strong fidelity to the winter home range in both species; birds returned on average within 4 weeks. Greater homing success was found in Blue Tits than in Great Tits (45.7 vs. 32.5 % retraps). More individuals returned home from an ecotone site, which included gardens with feeders, than from a forest site (40.9 vs. 29.2 %). Blue Tits homed approximately 1 week more quickly than Great Tits, and similar mean differences were observed when comparing males with females of both species using Kaplar–Meier survival functions. A parametric survival regression model indicated that the difference in homing time between species was not significant, but males of both species returned significantly sooner than females. Moreover, birds that originated from a site with greater food supply homed more quickly, and interaction of sex and site also showed a significant effect in this model. Our evidence suggests that winter territoriality of these woodland passerines is shaped potentially by all tested factors and is an important behavioural characteristic linked with their ability to find limited resources during the harsh period of the year.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Many birds exhibit territoriality, which is vital for obtaining resources for survival. Non-migratory birds maintain larger territories in winter than during reproduction, but the degree of their fidelity to these winter home ranges is less well-known. We evaluated the homing success and time of return to home through a field experiment in which we trapped and displaced 1239 individual birds of two tit species, Great Tit (Parus major) and Blue Tit (Cyanistes caeruleus), and retrapped 267 of them over two winters (a total of 40 trapping sessions). Displacement of the birds between two sites 7.8 km apart revealed strong fidelity to the winter home range in both species; birds returned on average within 4 weeks. Greater homing success was found in Blue Tits than in Great Tits (45.7 vs. 32.5 % retraps). More individuals returned home from an ecotone site, which included gardens with feeders, than from a forest site (40.9 vs. 29.2 %). Blue Tits homed approximately 1 week more quickly than Great Tits, and similar mean differences were observed when comparing males with females of both species using Kaplar–Meier survival functions. A parametric survival regression model indicated that the difference in homing time between species was not significant, but males of both species returned significantly sooner than females. Moreover, birds that originated from a site with greater food supply homed more quickly, and interaction of sex and site also showed a significant effect in this model. Our evidence suggests that winter territoriality of these woodland passerines is shaped potentially by all tested factors and is an important behavioural characteristic linked with their ability to find limited resources during the harsh period of the year. Close https://link.springer.com/article/10.1007/s10336-016-1362-2 doi:https://doi.org/10.1007/s10336-016-1362-2 Close
Naďo, L; Chromá, R; Kaňuch, P Structural, temporal and genetic properties of social groups in the short-lived migratory bat Nyctalus leisleri Journal Article Behaviour, 154 (7-8), pp. 785-807, 2017, ISSN: 0005-7959. Abstract \| Links \| BibTeX @article{Naďo2017, title = {Structural, temporal and genetic properties of social groups in the short-lived migratory bat \textit{Nyctalus leisleri}}, author = {L. Naďo and R. Chromá and P. Kaňuch}, doi = { 10.1163/1568539X-00003444 }, issn = { 0005-7959}, year = {2017}, date = {2017-01-01}, journal = {Behaviour}, volume = {154}, number = {7-8}, pages = {785-807}, abstract = {Social groups of bats that operate under fission–fusion dynamics tend to establish and maintain non-random associations. We examined the social and genetic structure of the Leisler’s bat (Nyctalus leisleri), a species that is typical of tree-dwelling and long-distance migratory species in Europe. We used long-term co-occurrence data (capture-recapture sampling of roosting individuals) in combination with individual genetic relatedness (inferred from a set of microsatellite markers) to assess relationships between structural, temporal and genetic properties of roosting groups. Our results showed that social structure in groups of roosting Leisler’s bat was not random. Social clusters revealed by network analysis were almost identical to demographic cohorts, which indicates that Leisler’s bats are able to maintain social bonds only over a single season. After the period of active maternal care, roosting groups became smaller with a significantly higher level of genetic relatedness among adult females in contrast to the pregnancy and lactation stages. This provides some evidence that temporal social associations may be positively correlated with genetic relatedness. Low recapture rates of bats across seasons in light of natal philopatry indicates a shorter life span of individuals likely due to high mortality during long distance migratory movements. This probably has the most significant effect on the social system of this species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Social groups of bats that operate under fission–fusion dynamics tend to establish and maintain non-random associations. We examined the social and genetic structure of the Leisler’s bat (Nyctalus leisleri), a species that is typical of tree-dwelling and long-distance migratory species in Europe. We used long-term co-occurrence data (capture-recapture sampling of roosting individuals) in combination with individual genetic relatedness (inferred from a set of microsatellite markers) to assess relationships between structural, temporal and genetic properties of roosting groups. Our results showed that social structure in groups of roosting Leisler’s bat was not random. Social clusters revealed by network analysis were almost identical to demographic cohorts, which indicates that Leisler’s bats are able to maintain social bonds only over a single season. After the period of active maternal care, roosting groups became smaller with a significantly higher level of genetic relatedness among adult females in contrast to the pregnancy and lactation stages. This provides some evidence that temporal social associations may be positively correlated with genetic relatedness. Low recapture rates of bats across seasons in light of natal philopatry indicates a shorter life span of individuals likely due to high mortality during long distance migratory movements. This probably has the most significant effect on the social system of this species. Close doi: 10.1163/1568539X-00003444 Close
Uhrin, M; Benda, P; Kaňuch, P Different responses of attic-dwelling bat species to landscape naturalness Journal Article Mammalian Biology - Zeitschrift für Säugetierkunde, 82 , pp. 48-56, 2017, ISSN: 1616-5047. Abstract \| Links \| BibTeX @article{Uhrin2017, title = {Different responses of attic-dwelling bat species to landscape naturalness}, author = {M. Uhrin and P. Benda and P. Kaňuch}, url = {http://www.sciencedirect.com/science/article/pii/S1616504716301458}, doi = {https://doi.org/10.1016/j.mambio.2016.10.001}, issn = {1616-5047}, year = {2017}, date = {2017-01-01}, journal = {Mammalian Biology - Zeitschrift für Säugetierkunde}, volume = {82}, pages = {48-56}, abstract = {Although the general role of bats and the tolerance of many species to urbanized areas is well known, the relationship between urban roosts and their surrounding landscapes having different degrees of naturalness still requires our attention, mainly in species that are the most adapted to human-made structures. We used extensive data from attic-dwelling bat surveillance conducted throughout Slovakia to assess species responses to the degree of naturalness of the landscape surrounding their anthropogenic roosts. Using generalized linear mixed-effects modelling, we found that some bats established their nursery colonies in either a habitat with a higher proportion of forests mostly at sub-mountain/mountain altitudes (R. hipposideros, P. auritus, M. emarginatus), or they preferred lowlands with a predominance of arable land (E. serotinus, P. austriacus). Furthermore, higher habitat heterogeneity and the proportion of grassland were positively associated with the occurrence of P. auritus; however, negative associations with these habitat variables were found in E. serotinus. The predicted suitability of an area for bats to establish nursery colonies suggests the existence of two regions with different bat species composition in the study area: a region of the Pannonian Lowlands and a less urbanized mountain region of the Carpathian Mountains. Our study thus showed that landscape naturalness is a determining factor for roost-site selection by bats preferring anthropogenic roosts; however, some bat species did not express specific preferences according to the tested environmental variables, and other ecological traits in the evaluated species should be considered.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Although the general role of bats and the tolerance of many species to urbanized areas is well known, the relationship between urban roosts and their surrounding landscapes having different degrees of naturalness still requires our attention, mainly in species that are the most adapted to human-made structures. We used extensive data from attic-dwelling bat surveillance conducted throughout Slovakia to assess species responses to the degree of naturalness of the landscape surrounding their anthropogenic roosts. Using generalized linear mixed-effects modelling, we found that some bats established their nursery colonies in either a habitat with a higher proportion of forests mostly at sub-mountain/mountain altitudes (R. hipposideros, P. auritus, M. emarginatus), or they preferred lowlands with a predominance of arable land (E. serotinus, P. austriacus). Furthermore, higher habitat heterogeneity and the proportion of grassland were positively associated with the occurrence of P. auritus; however, negative associations with these habitat variables were found in E. serotinus. The predicted suitability of an area for bats to establish nursery colonies suggests the existence of two regions with different bat species composition in the study area: a region of the Pannonian Lowlands and a less urbanized mountain region of the Carpathian Mountains. Our study thus showed that landscape naturalness is a determining factor for roost-site selection by bats preferring anthropogenic roosts; however, some bat species did not express specific preferences according to the tested environmental variables, and other ecological traits in the evaluated species should be considered. Close http://www.sciencedirect.com/science/article/pii/S1616504716301458 doi:https://doi.org/10.1016/j.mambio.2016.10.001 Close
2016
Jarčuška, B; Slezák, M; Hrivnák, R; Senko, D Invasibility of alien Impatiens parviflora in temperate forest understories Journal Article Flora, 224 , pp. 14–23, 2016. Abstract \| Links \| BibTeX @article{Jarčuška2016, title = {Invasibility of alien Impatiens parviflora in temperate forest understories}, author = {B. Jarčuška and M. Slezák and R. Hrivnák and D. Senko}, url = {http://www.sciencedirect.com/science/article/pii/S0367253016300937}, year = {2016}, date = {2016-12-31}, journal = {Flora}, volume = {224}, pages = {14–23}, abstract = {Closed-canopy forests had been assumed to be a highly resistant to plant invasions but recently it has been found that several invasive plants are also effectively adapted to shaded forest understories. One of them is small balsam, Impatiens parviflora, one of the most widespread invasive plants occurring in temperate and northern regions of Europe. Certain discrepancies in autecology of small balsam or in its interaction with native species in invaded communities have been published previously. These can be accounted for by habitat-related biases (e.g., restricted length of analysed environmental gradients), size of sampling units and geographical range of sampling. Therefore to achieve better insight into the success of small balsam, we used dataset of vegetation plots from various types of temperate forests in Western Carpathians, Slovakia. To identify principle environmental and vegetation-related determinants controlling cover values of small balsam in temperate forests, and to model small balsam’s response to particular gradients, we used Boosted Regression Trees (BRT), technique that can model complex curvilinear relationships and their interactions. While additive BRT-model accounted for 24.1% of variation in small balsam cover, model with up to five-way interactions explained 46.0%. Nutrients (Ellenberg indicator value) were the most influential predictor accounting for 21.6% of variance. We observed only weak negative association between herb-layer species richness and cover of small balsam. The highest cover of small balsam was observed at nutrient-richest sites, along with lowest summarised cover of other species in herb layer. Trade-offs between mean annual precipitation and nutrients were also observed for cover of small balsam; species cover was higher at nutrient-poorer sites that received lower mean annual precipitation, while opposite was true for nutrient rich sites. The present work is the first study showing the positive association between nutrients availability and small balsam cover in forest understories, at a large spatial scale.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Closed-canopy forests had been assumed to be a highly resistant to plant invasions but recently it has been found that several invasive plants are also effectively adapted to shaded forest understories. One of them is small balsam, Impatiens parviflora, one of the most widespread invasive plants occurring in temperate and northern regions of Europe. Certain discrepancies in autecology of small balsam or in its interaction with native species in invaded communities have been published previously. These can be accounted for by habitat-related biases (e.g., restricted length of analysed environmental gradients), size of sampling units and geographical range of sampling. Therefore to achieve better insight into the success of small balsam, we used dataset of vegetation plots from various types of temperate forests in Western Carpathians, Slovakia. To identify principle environmental and vegetation-related determinants controlling cover values of small balsam in temperate forests, and to model small balsam’s response to particular gradients, we used Boosted Regression Trees (BRT), technique that can model complex curvilinear relationships and their interactions. While additive BRT-model accounted for 24.1% of variation in small balsam cover, model with up to five-way interactions explained 46.0%. Nutrients (Ellenberg indicator value) were the most influential predictor accounting for 21.6% of variance. We observed only weak negative association between herb-layer species richness and cover of small balsam. The highest cover of small balsam was observed at nutrient-richest sites, along with lowest summarised cover of other species in herb layer. Trade-offs between mean annual precipitation and nutrients were also observed for cover of small balsam; species cover was higher at nutrient-poorer sites that received lower mean annual precipitation, while opposite was true for nutrient rich sites. The present work is the first study showing the positive association between nutrients availability and small balsam cover in forest understories, at a large spatial scale. Close http://www.sciencedirect.com/science/article/pii/S0367253016300937 Close
Karaska, D; Trnka, A; Krištín, A; Ridzoň, J Chránené vtáčie územia Slovenska Book Štátna ochrana prírody Slovenskej republiky, Banská Bystrica, 2016, ISBN: 978-80-89802-16-6. BibTeX @book{KARASKA2016, title = {Chránené vtáčie územia Slovenska}, author = {D. Karaska and A. Trnka and A. Krištín and J. Ridzoň}, editor = {D. Karaska and A. Trnka and A. Krištín and J. Ridzoň}, isbn = {978-80-89802-16-6}, year = {2016}, date = {2016-10-01}, publisher = {Štátna ochrana prírody Slovenskej republiky}, address = {Banská Bystrica}, keywords = {}, pubstate = {published}, tppubtype = {book} } Close
Krištín, A; Jarčuška, B Distribution and ecology of the flightless bush-cricket Poecilimon schmidtii at its northern range margin Journal Article Biologia, 71 (9), pp. 1049-1060, 2016. Abstract \| Links \| BibTeX @article{Krištín2016, title = {Distribution and ecology of the flightless bush-cricket Poecilimon schmidtii at its northern range margin}, author = {A. Krištín and B. Jarčuška}, url = {https://www.researchgate.net/publication/309281814_Distribution_and_ecology_of_the_flightless_bush-cricket_Poecilimon_schmidtii_at_its_northern_range_margin}, doi = {10.1515/biolog-2016-0128}, year = {2016}, date = {2016-09-01}, journal = {Biologia}, volume = {71}, number = {9}, pages = {1049-1060}, abstract = {The distributional patterns and ecology of the ponto-mediterranean species Poecilimon schmidtii were only insufficiently known until now, despite assumed to be one of the northernmost distributed species of the genus. Based on the review of all available published and own field data, we improved the distribution map of the species and recorded it for the first time from Poland. The distribution survey was carried at 1,208 sites in Slovakia, 39 sites in SE Poland and 26 sites in W Ukraine between 1994 and 2015. P. schmidtii was found at 59 sites and the habitat requirements were analysed. The results show a clear preference of the species for broadleaved forest ecotones with hazel and Rubus spp. shrubs being the main host plants. The species was present in grid cells with a lower mean altitude, a higher annual mean temperature and a lower annual precipitation compared to those available within the northern species’ range. Its altitudinal distribution was between 105 and 950 m a.s.l. Altogether, 70 Orthoptera and one mantid species were recorded and assemblages of Orthoptera and Mantodea were described for 49 sites with P. schmidtii in Slovakia and Poland. On average 18.9 ± 7.5 (SD) species were found per site, ranging from 7 to 37. Using detrended correspondence analysis it was not possible to distinguish between the orthopteran assemblages with and without (n = 94) P. schmidtii. In the assemblages, P. schmidtii was more often present with mountainous species. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The distributional patterns and ecology of the ponto-mediterranean species Poecilimon schmidtii were only insufficiently known until now, despite assumed to be one of the northernmost distributed species of the genus. Based on the review of all available published and own field data, we improved the distribution map of the species and recorded it for the first time from Poland. The distribution survey was carried at 1,208 sites in Slovakia, 39 sites in SE Poland and 26 sites in W Ukraine between 1994 and 2015. P. schmidtii was found at 59 sites and the habitat requirements were analysed. The results show a clear preference of the species for broadleaved forest ecotones with hazel and Rubus spp. shrubs being the main host plants. The species was present in grid cells with a lower mean altitude, a higher annual mean temperature and a lower annual precipitation compared to those available within the northern species’ range. Its altitudinal distribution was between 105 and 950 m a.s.l. Altogether, 70 Orthoptera and one mantid species were recorded and assemblages of Orthoptera and Mantodea were described for 49 sites with P. schmidtii in Slovakia and Poland. On average 18.9 ± 7.5 (SD) species were found per site, ranging from 7 to 37. Using detrended correspondence analysis it was not possible to distinguish between the orthopteran assemblages with and without (n = 94) P. schmidtii. In the assemblages, P. schmidtii was more often present with mountainous species. Close https://www.researchgate.net/publication/309281814_Distribution_and_ecology_of_t[...] doi:10.1515/biolog-2016-0128 Close
Nuhličková, S; Krištín, A; Degma, P; Hoi, H Variability in nestling diet of European hoopes: annual and sampling effect Journal Article Folia Zoologica, 65 (3), pp. 189-199, 2016. BibTeX @article{NUHLIČKOVÁ2016, title = {Variability in nestling diet of European hoopes: annual and sampling effect}, author = {S. Nuhličková and A. Krištín and P. Degma and H. Hoi}, year = {2016}, date = {2016-09-01}, journal = {Folia Zoologica}, volume = {65}, number = {3}, pages = {189-199}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Maxinová, E; Kipson, M; Naďo, L; Hradická, P; Uhrin, M Foraging strategy of Kuhl's pipistrelle at the northern edge of the species distribution Journal Article Acta Chiropterologica, 18 (1), pp. 215-222, 2016, ISSN: 1508-1109. Abstract \| Links \| BibTeX @article{Maxinová2016, title = {Foraging strategy of Kuhl's pipistrelle at the northern edge of the species distribution}, author = {E. Maxinová and M. Kipson and L. Naďo and P. Hradická and M. Uhrin}, url = {http://www.bioone.org/doi/abs/10.3161/15081109ACC2016.18.1.012}, doi = {https://doi.org/10.3161/15081109ACC2016.18.1.012}, issn = {1508-1109}, year = {2016}, date = {2016-01-01}, journal = {Acta Chiropterologica}, volume = {18}, number = {1}, pages = {215-222}, abstract = {Rapid range expansion of Kuhl’s pipistrelle (Pipistrellus kuhlii) has been observed throughout Europe, and in addition to its natural habitats of temperate grasslands and agricultural areas, the species is common in city centres, where it roosts in human-made structures. It has been suggested that the flexibility of this species in regard to different human-induced changes, such as climate change and urbanization, is responsible for the apparent range shift. Although P. kuhlii exhibits one of the highest degrees of synanthropy among bat species in Europe, its ecology has thus far not been thoroughly studied. This study aims to describe its foraging and roosting selection in Central Europe (eastern Slovakia), where the northernmost maternity colony of P. kuhlii roosts in human settlements. Radio-tracking was conducted during the pre-parturition and post-lactation periods. We identified six artificial roosts within the study area that were interlinked, with bats switching between them. Ten individuals were used for modelling foraging-habitat utilization, which revealed that bats were highly selective. The only habitat type that bats clearly preferred, regardless of season, was an urban illuminated area close to a river. Only slight avoidance — of open areas — was observed during the pre-parturition period.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Rapid range expansion of Kuhl’s pipistrelle (Pipistrellus kuhlii) has been observed throughout Europe, and in addition to its natural habitats of temperate grasslands and agricultural areas, the species is common in city centres, where it roosts in human-made structures. It has been suggested that the flexibility of this species in regard to different human-induced changes, such as climate change and urbanization, is responsible for the apparent range shift. Although P. kuhlii exhibits one of the highest degrees of synanthropy among bat species in Europe, its ecology has thus far not been thoroughly studied. This study aims to describe its foraging and roosting selection in Central Europe (eastern Slovakia), where the northernmost maternity colony of P. kuhlii roosts in human settlements. Radio-tracking was conducted during the pre-parturition and post-lactation periods. We identified six artificial roosts within the study area that were interlinked, with bats switching between them. Ten individuals were used for modelling foraging-habitat utilization, which revealed that bats were highly selective. The only habitat type that bats clearly preferred, regardless of season, was an urban illuminated area close to a river. Only slight avoidance — of open areas — was observed during the pre-parturition period. Close http://www.bioone.org/doi/abs/10.3161/15081109ACC2016.18.1.012 doi:https://doi.org/10.3161/15081109ACC2016.18.1.012 Close
Kaňuch, P; Naďo, L; Krištín, A A noteworthy record of Rhinolophus hipposideros nursery roost under a road bridge Journal Article Vespertilio, 18 , pp. 163-166, 2016, ISSN: 1213-6123. Abstract \| Links \| BibTeX @article{Kaňuch2016, title = {A noteworthy record of \textit{Rhinolophus hipposideros} nursery roost under a road bridge}, author = {P. Kaňuch and L. Naďo and A. Krištín}, url = {http://www.ceson.org/vespertilio/18/163_166_Kanuch.pdf}, issn = {1213-6123}, year = {2016}, date = {2016-01-01}, journal = {Vespertilio}, volume = {18}, pages = {163-166}, abstract = {In central Europe, roosts under road bridges are reported only rarely for few bat species. Under the concrete road bridge located close to the Hontianske Nemce village (central Slovakia), an abundant (up to 270 females) nursery colony of Rhinolophus hipposideros was found. Using infrared monitors, it was confirmed that the bats occurred in the roost permanently during the whole observed period (May – August 2015) while females gave births there at the end of June. It is the first roost of such type for this species recorded in central Europe and also the biggest colony of R. hipposideros known in the surrounding region.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close In central Europe, roosts under road bridges are reported only rarely for few bat species. Under the concrete road bridge located close to the Hontianske Nemce village (central Slovakia), an abundant (up to 270 females) nursery colony of Rhinolophus hipposideros was found. Using infrared monitors, it was confirmed that the bats occurred in the roost permanently during the whole observed period (May – August 2015) while females gave births there at the end of June. It is the first roost of such type for this species recorded in central Europe and also the biggest colony of R. hipposideros known in the surrounding region. Close http://www.ceson.org/vespertilio/18/163_166_Kanuch.pdf Close
Reif, J; Krištín, A; Kopsová, L; Devictor, V Linking habitat specialization with species' traits in European birds Journal Article Oikos, 125 (3), pp. 405-413, 2016. BibTeX @article{REIF2016, title = {Linking habitat specialization with species' traits in European birds}, author = {J. Reif and A. Krištín and L. Kopsová and V. Devictor}, year = {2016}, date = {2016-01-01}, journal = {Oikos}, volume = {125}, number = {3}, pages = {405-413}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Song, G; Zhang, R; Qu, Y; Wang, Z; Dong, L; Krištín, A; Alstrӧm, P; Ericson, P G P; Lambert, D M; Fjeldsa, J; Lei, Fu-Min A zoogeographical boundary between the Palaearctic and Sino-Japanese realms documentated by consistent north/south phylogeographical divergences in three woodland birds in eastern China Journal Article Journal of Biogeography, 43 (11), pp. 2099-2112, 2016, ISSN: 1365-2699. Abstract \| Links \| BibTeX @article{SONG2016, title = {A zoogeographical boundary between the Palaearctic and Sino-Japanese realms documentated by consistent north/south phylogeographical divergences in three woodland birds in eastern China}, author = {G. Song and R. Zhang and Y. Qu and Z. Wang and L. Dong and A. Krištín and P. Alstrӧm and P.G.P. Ericson and D.M. Lambert and J. Fjeldsa and Fu-Min Lei}, url = {http://onlinelibrary.wiley.com/doi/10.1111/jbi.12758/full}, doi = {10.1111/jbi.12758}, issn = {1365-2699}, year = {2016}, date = {2016-01-01}, journal = {Journal of Biogeography}, volume = {43}, number = {11}, pages = {2099-2112}, abstract = {The location of zoogeographical boundaries in eastern China has long been the subject of debate. To identify any north/south genetic divergence between the Palaearctic and Sino-Japanese realms proposed by previous studies, we conducted a comparative phylogeographical study involving three passerine species with wide latitudinal distributions in eastern China.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The location of zoogeographical boundaries in eastern China has long been the subject of debate. To identify any north/south genetic divergence between the Palaearctic and Sino-Japanese realms proposed by previous studies, we conducted a comparative phylogeographical study involving three passerine species with wide latitudinal distributions in eastern China. Close http://onlinelibrary.wiley.com/doi/10.1111/jbi.12758/full doi:10.1111/jbi.12758 Close
Dorková, M; Kocianová-Adamcová, M; Pristaš, P; Klinga, P Phylogenetic status of endemic Chionomys nivalis mirhanreini in the Western Carpathians. Journal Article Folia Oecologica, 43 (1), pp. 3-11, 2016. Abstract \| Links \| BibTeX @article{Dorková2016, title = {Phylogenetic status of endemic \textit{Chionomys nivalis mirhanreini} in the Western Carpathians.}, author = {M. Dorková and M. Kocianová-Adamcová and P. Pristaš and P. Klinga}, url = {https://ife.sk/2016_dorkova/}, year = {2016}, date = {2016-01-01}, journal = {Folia Oecologica}, volume = {43}, number = {1}, pages = {3-11}, abstract = {The Snow vole has a fragmented distribution restricted to the mountain and rocky regions from the southwestern Europe to the Caucasus and the Middle East. Several subspecies have been described on the basis of dental characters. In this study we provide more detail insight into phylogenetic status of the Snow vole Chionomys nivalis occurring in the Western Carpathians compared to its populations within Eurasia. We analysed 588 bp fragment of mtDNA cytochrome b gene in samples collected in the two isolated populations within the High Tatras and Low Tatras Mountains. Our results indicate Western Carpathians as the long term isolated refugia for C. nivalis and support the subspecies status of C. n. mirhanreini in the Western Carpathians. The European populations are formed by two southern phylogenetic lineages – the first originates in Iberian Peninsula and the other expanding from Balkans to the Eastern Carpathians is also visible }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The Snow vole has a fragmented distribution restricted to the mountain and rocky regions from the southwestern Europe to the Caucasus and the Middle East. Several subspecies have been described on the basis of dental characters. In this study we provide more detail insight into phylogenetic status of the Snow vole Chionomys nivalis occurring in the Western Carpathians compared to its populations within Eurasia. We analysed 588 bp fragment of mtDNA cytochrome b gene in samples collected in the two isolated populations within the High Tatras and Low Tatras Mountains. Our results indicate Western Carpathians as the long term isolated refugia for C. nivalis and support the subspecies status of C. n. mirhanreini in the Western Carpathians. The European populations are formed by two southern phylogenetic lineages – the first originates in Iberian Peninsula and the other expanding from Balkans to the Eastern Carpathians is also visible Close https://ife.sk/2016_dorkova/ Close
Lešo, P; Lešová, A; Kropil, R; Kaňuch, P Response of the dominant rodent species to close-to-nature logging practices in a temperate mixed forest Journal Article Annals of Forest Research, 59 (2), pp. 259-268, 2016. Abstract \| Links \| BibTeX @article{Lešo2016, title = {Response of the dominant rodent species to close-to-nature logging practices in a temperate mixed forest}, author = {P. Lešo and A. Lešová and R. Kropil and P. Kaňuch}, doi = {10.15287/afr.2016.620}, year = {2016}, date = {2016-01-01}, journal = {Annals of Forest Research}, volume = {59}, number = {2}, pages = {259-268}, abstract = {The paper aims to answer the question whether differences exist in microhabitat preferences of the yellow-necked mouse and the bank vole between the natural forest and close-to-nature managed forest in the phase of stand regeneration. The two species were live-trapped during two periods in 2006 and 2007 on a square trapping grid established in a managed forest and a natural one. Ten microhabitat variables of each trapping point were measured to analyse their influence on the spatial distribution of the two species. At trapping points, the number of capture records for each species as a dependent variable was modelled using Generalised Linear Models. The herbal cover and a distance to the nearest woody debris were the most important measured microhabitat variables which affect the spatial distribution of both species. In the natural forest, the number of captures in both species increased significantly (p < 0.05) with a decreasing number of trees, increasing undergrowth coverage and decreasing distance to the nearest woody debris. In the managed forest, an increasing distance to the nearest tree and increasing herbal cover had a negative effect on the yellow-necked mouse occurrence (p < 0.001), while in contrast, the increase in values of the same variables increased frequency of occurrence of the bank vole (p < 0.001). Moreover, the bank vole was more frequent in the presence of woody debris (p < 0.002). The study demonstrated clearly that these species modify their spatial activity depending on the management of the woodland.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The paper aims to answer the question whether differences exist in microhabitat preferences of the yellow-necked mouse and the bank vole between the natural forest and close-to-nature managed forest in the phase of stand regeneration. The two species were live-trapped during two periods in 2006 and 2007 on a square trapping grid established in a managed forest and a natural one. Ten microhabitat variables of each trapping point were measured to analyse their influence on the spatial distribution of the two species. At trapping points, the number of capture records for each species as a dependent variable was modelled using Generalised Linear Models. The herbal cover and a distance to the nearest woody debris were the most important measured microhabitat variables which affect the spatial distribution of both species. In the natural forest, the number of captures in both species increased significantly (p < 0.05) with a decreasing number of trees, increasing undergrowth coverage and decreasing distance to the nearest woody debris. In the managed forest, an increasing distance to the nearest tree and increasing herbal cover had a negative effect on the yellow-necked mouse occurrence (p < 0.001), while in contrast, the increase in values of the same variables increased frequency of occurrence of the bank vole (p < 0.001). Moreover, the bank vole was more frequent in the presence of woody debris (p < 0.002). The study demonstrated clearly that these species modify their spatial activity depending on the management of the woodland. Close doi:10.15287/afr.2016.620 Close
2015
Naďo, L; Kaňuch, P Swarming behaviour associated with group cohesion in tree-dwelling bats Journal Article Behavioural Processes, 120 , pp. 80–86, 2015, ISSN: 0376-6357. Abstract \| Links \| BibTeX @article{L.2015, title = {Swarming behaviour associated with group cohesion in tree-dwelling bats}, author = {L. Naďo and P. Kaňuch}, url = {http://www.sciencedirect.com/science/article/pii/S0376635715300358}, doi = {https://doi.org/10.1016/j.beproc.2015.09.005}, issn = {0376-6357}, year = {2015}, date = {2015-11-01}, journal = {Behavioural Processes}, volume = {120}, pages = {80–86}, abstract = {Group living of social species increases the individual survival rate and enhances optimal exploitation of resources within their environment. Groups of cryptic tree-dwelling bats perform frequent roost switching on relatively long distances, whereas groups are temporarily disintegrated during foraging that precedes moving into new roost. In this study, we attempted to elucidate a mechanism in which group members can select new roost from a large set of potential roosting sites without disintegration of the whole group. Exploring the activity at the front of the tree hollows, recorded by automatic infrared monitors, we found that the swarming activity of Leisler’s bats was performed during the whole night and was concentrated before the civil twilight at occupied roosts. A generalized linear model revealed significant positive association between the group size and swarming activity while season had negative but smaller effect. As bats swarmed the whole night also at sites that were less occupied or even unoccupied, we suggest that members of a bat colony selected new roost from a potentially larger set of available roosting sites. Thus, we propose a possible signalling role of swarming as a threshold behaviour that ensures group cohesion during roost switching.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Group living of social species increases the individual survival rate and enhances optimal exploitation of resources within their environment. Groups of cryptic tree-dwelling bats perform frequent roost switching on relatively long distances, whereas groups are temporarily disintegrated during foraging that precedes moving into new roost. In this study, we attempted to elucidate a mechanism in which group members can select new roost from a large set of potential roosting sites without disintegration of the whole group. Exploring the activity at the front of the tree hollows, recorded by automatic infrared monitors, we found that the swarming activity of Leisler’s bats was performed during the whole night and was concentrated before the civil twilight at occupied roosts. A generalized linear model revealed significant positive association between the group size and swarming activity while season had negative but smaller effect. As bats swarmed the whole night also at sites that were less occupied or even unoccupied, we suggest that members of a bat colony selected new roost from a potentially larger set of available roosting sites. Thus, we propose a possible signalling role of swarming as a threshold behaviour that ensures group cohesion during roost switching. Close http://www.sciencedirect.com/science/article/pii/S0376635715300358 doi:https://doi.org/10.1016/j.beproc.2015.09.005 Close
Hrivnák, R; Slezák, M; Jarčuška, B; Jarolímek, I; Kochjarová, J Native and alien plant species richness response to soil nitrogen and phosphorus in temperate floodplain and swamp forests Journal Article Forests, 6 (10), pp. 3501-3513, 2015. Abstract \| Links \| BibTeX @article{Hrivnák2015, title = {Native and alien plant species richness response to soil nitrogen and phosphorus in temperate floodplain and swamp forests}, author = {R. Hrivnák and M. Slezák and B. Jarčuška and I. Jarolímek and J. Kochjarová}, url = {http://www.mdpi.com/1999-4907/6/10/3501}, year = {2015}, date = {2015-10-07}, journal = {Forests}, volume = {6}, number = {10}, pages = {3501-3513}, abstract = {Soil nitrogen and phosphorus are commonly limiting elements affecting plant species richness in temperate zones. Our species richness-ecological study was performed in alder-dominated forests representing temperate floodplains (streamside alder forests of Alnion incanae alliance) and swamp forests (alder carrs of Alnion glutinosae alliance) in the Western Carpathians. Species richness (i.e., the number of vascular plants in a vegetation plot) was analyzed separately for native and alien vascular plants in 240 vegetation plots across the study area covering Slovakia, northern Hungary and southern Poland. The relationship between the species richness of each plant group and total soil nitrogen content, plant-available phosphorus and carbon to nitrogen (C/N) ratio was analyzed by generalized linear mixed models (GLMM) with Poisson error distribution and log-link function. The number of recorded native and alien species was 17–84 (average 45.4) and 0–9 (average 1.5) species per plot, respectively. The GLMMs were statistically significant (p ˂ 0.001) for both plant groups, but the total explained variation was higher for native (14%) than alien plants (9%). The richness of native species was negatively affected by the total soil nitrogen content and plant-available phosphorus, whereas the C/N ratio showed a positive impact. The alien richness was predicted only by the total soil nitrogen content showing a negative effect. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Soil nitrogen and phosphorus are commonly limiting elements affecting plant species richness in temperate zones. Our species richness-ecological study was performed in alder-dominated forests representing temperate floodplains (streamside alder forests of Alnion incanae alliance) and swamp forests (alder carrs of Alnion glutinosae alliance) in the Western Carpathians. Species richness (i.e., the number of vascular plants in a vegetation plot) was analyzed separately for native and alien vascular plants in 240 vegetation plots across the study area covering Slovakia, northern Hungary and southern Poland. The relationship between the species richness of each plant group and total soil nitrogen content, plant-available phosphorus and carbon to nitrogen (C/N) ratio was analyzed by generalized linear mixed models (GLMM) with Poisson error distribution and log-link function. The number of recorded native and alien species was 17–84 (average 45.4) and 0–9 (average 1.5) species per plot, respectively. The GLMMs were statistically significant (p ˂ 0.001) for both plant groups, but the total explained variation was higher for native (14%) than alien plants (9%). The richness of native species was negatively affected by the total soil nitrogen content and plant-available phosphorus, whereas the C/N ratio showed a positive impact. The alien richness was predicted only by the total soil nitrogen content showing a negative effect. Close http://www.mdpi.com/1999-4907/6/10/3501 Close
Naďo, L; Kaňuch, P Roost site selection by tree-dwelling bats across biogeographical regions: an updated meta-analysis with meta-regression. Journal Article Mammal Review, 45 (4), pp. 215–226, 2015, ISSN: 1365-2907. Abstract \| Links \| BibTeX @article{L.2015b, title = {Roost site selection by tree-dwelling bats across biogeographical regions: an updated meta-analysis with meta-regression.}, author = {L. Naďo and P. Kaňuch}, url = {http://onlinelibrary.wiley.com/doi/10.1111/mam.12044/abstract}, doi = {10.1111/mam.12044}, issn = {1365-2907}, year = {2015}, date = {2015-08-18}, journal = {Mammal Review}, volume = {45}, number = {4}, pages = {215–226}, abstract = {1. Bats roosting in tree cavities, under loose bark or just on branches in foliage, so-called tree-dwelling bats, are a very diverse and abundant group of species. Although they can be very different species with locally distinct needs, radical exploitation of forest habitats and global changes have meant that many of them are regionally endangered and survive today only in small populations. To help develop appropriate conservation policies and management plans, much research in recent decades has been focussed on inferring habitat selection by tree-dwelling bats. However, large variability in the reported selection patterns makes it difficult to suggest some more-or-less universal and easily applicable management recommendations, also for regions in which nature conservation awareness is low. 2. We created a meta-analytic model to explore selection patterns at a global scale. Phylogenetic relationships among species and additional variables were included to explain discrepancies between studies. 3. A meta-analytic model showed that bats are selecting trees with trunk diameters that are larger than those of randomly selected trees, and this pattern is consistent within each biogeographical region. However, meta-regression revealed that the detectability of the selection depends strongly on the structural variability within the study environment (size of randomly selected or surrounding trees in forest stands, forest fragmentation, habitat disturbance) and on the methodological approach that has been applied (the length of the study). We found stronger selection for larger trees in non-fragmented and less disturbed forests than in fragmented forests with high habitat disturbance, and, strikingly, short-term studies yielded results with stronger selection than long-term studies. 4. Our results suggest that patterns of roosting habitat selection by bats may be overestimated in some studies. In conclusion, we propose that further research should be conducted in all types of forest ecosystem (data from the tropics are currently missing). Future studies should include at least three years of data collection, in order to avoid estimation bias in habitat selection patterns.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close 1. Bats roosting in tree cavities, under loose bark or just on branches in foliage, so-called tree-dwelling bats, are a very diverse and abundant group of species. Although they can be very different species with locally distinct needs, radical exploitation of forest habitats and global changes have meant that many of them are regionally endangered and survive today only in small populations. To help develop appropriate conservation policies and management plans, much research in recent decades has been focussed on inferring habitat selection by tree-dwelling bats. However, large variability in the reported selection patterns makes it difficult to suggest some more-or-less universal and easily applicable management recommendations, also for regions in which nature conservation awareness is low. 2. We created a meta-analytic model to explore selection patterns at a global scale. Phylogenetic relationships among species and additional variables were included to explain discrepancies between studies. 3. A meta-analytic model showed that bats are selecting trees with trunk diameters that are larger than those of randomly selected trees, and this pattern is consistent within each biogeographical region. However, meta-regression revealed that the detectability of the selection depends strongly on the structural variability within the study environment (size of randomly selected or surrounding trees in forest stands, forest fragmentation, habitat disturbance) and on the methodological approach that has been applied (the length of the study). We found stronger selection for larger trees in non-fragmented and less disturbed forests than in fragmented forests with high habitat disturbance, and, strikingly, short-term studies yielded results with stronger selection than long-term studies. 4. Our results suggest that patterns of roosting habitat selection by bats may be overestimated in some studies. In conclusion, we propose that further research should be conducted in all types of forest ecosystem (data from the tropics are currently missing). Future studies should include at least three years of data collection, in order to avoid estimation bias in habitat selection patterns. Close http://onlinelibrary.wiley.com/doi/10.1111/mam.12044/abstract doi:10.1111/mam.12044 Close
Kaňuch, P; Jarčuška, B; Kovács, L; Krištín, A Environmentally driven variability in size-selective females' mating frequency of bush-cricket Pholidoptera griseoaptera Journal Article Evolutionary Ecology, 29 (5), pp. 787–797, 2015. Abstract \| Links \| BibTeX @article{Kaňuch2015, title = {Environmentally driven variability in size-selective females' mating frequency of bush-cricket \textit{Pholidoptera griseoaptera}}, author = {P. Kaňuch and B. Jarčuška and L. Kovács and A. Krištín}, url = {http://link.springer.com/article/10.1007/s10682-015-9784-5}, year = {2015}, date = {2015-07-28}, journal = {Evolutionary Ecology}, volume = {29}, number = {5}, pages = {787–797}, abstract = {Reproduction in less favourable conditions requires genetic adaptation and/or behavioural plasticity of the organism. In order to determine the effects of these mechanisms on environment-associated variability in polyandry, a phenomenon related to reproductive success, we explored the frequency of copulations in females of nuptial giftgiving bush-cricket Pholidoptera griseoaptera (Orthoptera: Tettigoniidae) using a laboratory experiment. In a factorial design, we reared two populations originating from contrasting altitudes in two temperature treatment conditions. After 3 weeks for possible copulations in established mating groups, females (n = 108) contained between 0 and 15 spermatodoses (a proxy for the number of copulations) in their spermatheca. The mean number of spermatodoses per female did not differ either between lowland and highland populations or between warm and cold treatments. Thus, we did not observe main effects of these two factors on adaptation or plasticity. In contrast, the frequency of copulations was significantly affected by female size as log(number of spermatodoses) increased by 0.41 ± 0.27 per each 0.1 mm of pronotum length. However, interactions between the body size (the trait that predicts females’ quality for reproduction) with environmental factors revealed that larger females originating from the highland population and larger females reared in cold treatment copulated more often than smaller ones, whereas females’ size did not affect copulation frequency in the lowland population or in warm treatment. It suggests stronger competition among females in harsher environmental conditions, whereas effect sizes of interaction terms showed that observed mating behaviour expressed a similar extent of genetic and plastic responses to female size. This first observation of environment-associated body size-dependent mating behaviour suggests the interplay of sexual and natural selection in a nuptial gift-giving species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Reproduction in less favourable conditions requires genetic adaptation and/or behavioural plasticity of the organism. In order to determine the effects of these mechanisms on environment-associated variability in polyandry, a phenomenon related to reproductive success, we explored the frequency of copulations in females of nuptial giftgiving bush-cricket Pholidoptera griseoaptera (Orthoptera: Tettigoniidae) using a laboratory experiment. In a factorial design, we reared two populations originating from contrasting altitudes in two temperature treatment conditions. After 3 weeks for possible copulations in established mating groups, females (n = 108) contained between 0 and 15 spermatodoses (a proxy for the number of copulations) in their spermatheca. The mean number of spermatodoses per female did not differ either between lowland and highland populations or between warm and cold treatments. Thus, we did not observe main effects of these two factors on adaptation or plasticity. In contrast, the frequency of copulations was significantly affected by female size as log(number of spermatodoses) increased by 0.41 ± 0.27 per each 0.1 mm of pronotum length. However, interactions between the body size (the trait that predicts females’ quality for reproduction) with environmental factors revealed that larger females originating from the highland population and larger females reared in cold treatment copulated more often than smaller ones, whereas females’ size did not affect copulation frequency in the lowland population or in warm treatment. It suggests stronger competition among females in harsher environmental conditions, whereas effect sizes of interaction terms showed that observed mating behaviour expressed a similar extent of genetic and plastic responses to female size. This first observation of environment-associated body size-dependent mating behaviour suggests the interplay of sexual and natural selection in a nuptial gift-giving species. Close http://link.springer.com/article/10.1007/s10682-015-9784-5 Close
Nováková, M; Bulková, A; Costa, F B; Krištín, A; Krist, M; Krause, F; Líznarová, E; Labruna, M B; Literák, I Molecular characterization of 'Candidatus Rickettsia vini' in Ixodes arboricola from the Czech Republic and Slovakia Journal Article Ticks and Tick-Borne Diseases, 6 (3), pp. 330–333, 2015. Links \| BibTeX @article{M.2015b, title = {Molecular characterization of '\textit{Candidatus} Rickettsia vini' in \textit{Ixodes arboricola} from the Czech Republic and Slovakia}, author = {M. Nováková and A. Bulková and F.B. Costa and A. Krištín and M. Krist and F. Krause and E. Líznarová and M.B. Labruna and I. Literák}, url = {http://www.sciencedirect.com/science/article/pii/S1877959X15000321}, year = {2015}, date = {2015-04-01}, journal = {Ticks and Tick-Borne Diseases}, volume = {6}, number = {3}, pages = {330–333}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.sciencedirect.com/science/article/pii/S1877959X15000321 Close
Kaňuch, P; Aghová, T; Meheretu, Y; Šumbera, R; Bryja, J New discoveries on the ecology and echolocation of the heart-nosed bat Cardioderma cor with a contribution to the phylogeny of Megadermatidae Journal Article African Zoology, 50 , pp. 53-57, 2015. Links \| BibTeX @article{P.2015b, title = {New discoveries on the ecology and echolocation of the heart-nosed bat Cardioderma cor with a contribution to the phylogeny of Megadermatidae}, author = {P. Kaňuch and T. Aghová and Y. Meheretu and R. Šumbera and J. Bryja}, url = {http://www.tandfonline.com/doi/pdf/10.1080/15627020.2015.1021711}, year = {2015}, date = {2015-03-16}, journal = {African Zoology}, volume = {50}, pages = {53-57}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.tandfonline.com/doi/pdf/10.1080/15627020.2015.1021711 Close
Kaňuch, P; Sliacka, A; Krištín, A Habitat-conditioned feeding behaviour in Barbitistes constrictus (Orthoptera: Tettigoniidae). Journal Article Open Life Sciences, 10 (1), pp. 1-6, 2015. Links \| BibTeX @article{P.2015b, title = {Habitat-conditioned feeding behaviour in \textit{Barbitistes constrictus} (Orthoptera: Tettigoniidae).}, author = {P. Kaňuch and A. Sliacka and A. Krištín}, url = {https://www.degruyter.com/view/j/biol.2015.10.issue-1/biol-2015-0001/biol-2015-0001.xml}, year = {2015}, date = {2015-01-01}, journal = {Open Life Sciences}, volume = {10}, number = {1}, pages = {1-6}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.degruyter.com/view/j/biol.2015.10.issue-1/biol-2015-0001/biol-2015-0[...] Close
Dorková, M; Kocianová-Adamcová, A Population dynamics and spatial activity of small terrestrial mammals in the alpine zone of the Low Tatra Mts., Slovakia (Rodentia, Eulipotyphla) Journal Article Lynx, 46 , pp. 19-28, 2015. Abstract \| Links \| BibTeX @article{Dorková2015, title = {Population dynamics and spatial activity of small terrestrial mammals in the alpine zone of the Low Tatra Mts., Slovakia (Rodentia, Eulipotyphla)}, author = {M. Dorková and A. Kocianová-Adamcová }, url = {https://ife.sk/2015_dorkova/}, year = {2015}, date = {2015-01-01}, journal = {Lynx}, volume = {46}, pages = {19-28}, abstract = {Research on small terrestrial mammals in the alpine zone of the Nízke Tatry (Low Tatra) Mts. was carried out between 2011 and 2014. During 377 trapping sessions performed in this period, a total of 206 individuals were recorded using the capture-mark-recapture (CMR) method. The most frequently recorded species were Chionomys nivalis mirhanreini and Microtus tatricus, followed by Microtus agrestis, Clethrionomys glareolus, Apodemus flavicollis, Sorex araneus, and S. minutus. The presence of Clethrionomys glareolus in the alpine zone, in places without vegetation, with a continuous coverage of bare rocks refutes the allegations that this species is restricted to the sub-alpine zone covered by the dwarf pine. A similar pattern of seasonal dynamics of Apodemus flavicollis and Clethrionomys glareolus was found in the alpine zone, which might be a consequence of their overpopulation at lower altitudes. The signs of sexual activity of Chionomys nivalis observed in the autumn months (September-October) suggest that -- contrary to previous studies -- the species can remain sexually active even after the August peak. Our hypothesis is that the extended sexual activity of the species is a result of its synanthropisation and migration into nearby buildings. Due to the insufficient performance of the trapping method, there was some uncertainty in the quantitative estimation of Eulipotyphla population densities. Out of all species recorded, Microtus agrestis was the least trapped, suggesting that the alpine zone represents a suboptimal sink habitat for this species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Research on small terrestrial mammals in the alpine zone of the Nízke Tatry (Low Tatra) Mts. was carried out between 2011 and 2014. During 377 trapping sessions performed in this period, a total of 206 individuals were recorded using the capture-mark-recapture (CMR) method. The most frequently recorded species were Chionomys nivalis mirhanreini and Microtus tatricus, followed by Microtus agrestis, Clethrionomys glareolus, Apodemus flavicollis, Sorex araneus, and S. minutus. The presence of Clethrionomys glareolus in the alpine zone, in places without vegetation, with a continuous coverage of bare rocks refutes the allegations that this species is restricted to the sub-alpine zone covered by the dwarf pine. A similar pattern of seasonal dynamics of Apodemus flavicollis and Clethrionomys glareolus was found in the alpine zone, which might be a consequence of their overpopulation at lower altitudes. The signs of sexual activity of Chionomys nivalis observed in the autumn months (September-October) suggest that -- contrary to previous studies -- the species can remain sexually active even after the August peak. Our hypothesis is that the extended sexual activity of the species is a result of its synanthropisation and migration into nearby buildings. Due to the insufficient performance of the trapping method, there was some uncertainty in the quantitative estimation of Eulipotyphla population densities. Out of all species recorded, Microtus agrestis was the least trapped, suggesting that the alpine zone represents a suboptimal sink habitat for this species. Close https://ife.sk/2015_dorkova/ Close
2014
Fornůsková, A; Petit, E J; Bartonička, T; Kaňuch, P; Butet, A; Rehák, Z; Bryja, J Strong matrilineal structure in common pipistrelle bats (Pipistrellus pipistrellus) is associated with variability in echolocation calls Journal Article Biological Journal of the Linnean Society, 113 (4), pp. 1115–1125, 2014. Links \| BibTeX @article{A.2014, title = {Strong matrilineal structure in common pipistrelle bats (\textit{Pipistrellus pipistrellus}) is associated with variability in echolocation calls}, author = {A. Fornůsková and E.J. Petit and T. Bartonička and P. Kaňuch and A. Butet and Z. Rehák and J. Bryja}, url = {http://onlinelibrary.wiley.com/doi/10.1111/bij.12381/abstract}, year = {2014}, date = {2014-12-01}, journal = {Biological Journal of the Linnean Society}, volume = {113}, number = {4}, pages = {1115–1125}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://onlinelibrary.wiley.com/doi/10.1111/bij.12381/abstract Close
Hrivnák, R; Gömöry, D; Slezák, M; Ujházy, K; Hédl, R; Jarčuška, B; Ujházyová, M Species richness pattern along altitudinal gradient in central European beech forests Journal Article Folia Geobotanica, 49 (3), pp. 425–441, 2014. Abstract \| Links \| BibTeX @article{Hrivnák2014, title = {Species richness pattern along altitudinal gradient in central European beech forests}, author = {R. Hrivnák and D. Gömöry and M. Slezák and K. Ujházy and R. Hédl and B. Jarčuška and M. Ujházyová}, url = {http://link.springer.com/article/10.1007/s12224-013-9174-0}, doi = {10.1007/s12224-013-9174-0}, year = {2014}, date = {2014-09-01}, journal = {Folia Geobotanica}, volume = {49}, number = {3}, pages = {425–441}, abstract = {The unimodal species richness-altitude distribution pattern seems to be universal. To investigate the validity of this phenomenon in homogeneous substrate and vegetation conditions, we sampled beech-dominated forests in five volcanic mountain ranges in the Western Carpathians. European beech (Fagus sylvatica L.) formed monodominant closed-canopy stands at altitudes from 300 to 1,200 m. Along this gradient, the influence of beech on understory plant species richness was expected to be strong and uniform. The shape of the species richness-altitude relationship was analyzed for three datasets: herb layer, shrub layer, and both layers merged together. Contrary to prediction, the studied species richness-altitude relationship was inversely unimodal, with a minimum at intermediate altitudes. Quadratic regression models were statistically significant for all three datasets (P<0.001) and the explained variability ranged from 12 % to 20 %. The possible explanation for the observed pattern is twofold. In the central part of the altitudinal gradient, low species richness is due to strong competition by monodominant beech with accumulation of leaf litter and uptake soil resources, mainly water. This influence is somewhat released towards the margins of the gradient. Secondly, the species pool from the neighbouring communities increases species richness only in the lower parts of the altitudinal gradient.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The unimodal species richness-altitude distribution pattern seems to be universal. To investigate the validity of this phenomenon in homogeneous substrate and vegetation conditions, we sampled beech-dominated forests in five volcanic mountain ranges in the Western Carpathians. European beech (Fagus sylvatica L.) formed monodominant closed-canopy stands at altitudes from 300 to 1,200 m. Along this gradient, the influence of beech on understory plant species richness was expected to be strong and uniform. The shape of the species richness-altitude relationship was analyzed for three datasets: herb layer, shrub layer, and both layers merged together. Contrary to prediction, the studied species richness-altitude relationship was inversely unimodal, with a minimum at intermediate altitudes. Quadratic regression models were statistically significant for all three datasets (P<0.001) and the explained variability ranged from 12 % to 20 %. The possible explanation for the observed pattern is twofold. In the central part of the altitudinal gradient, low species richness is due to strong competition by monodominant beech with accumulation of leaf litter and uptake soil resources, mainly water. This influence is somewhat released towards the margins of the gradient. Secondly, the species pool from the neighbouring communities increases species richness only in the lower parts of the altitudinal gradient. Close http://link.springer.com/article/10.1007/s12224-013-9174-0 doi:10.1007/s12224-013-9174-0 Close
Kašová, M; Naďo, L; Kaňuch, P Structure of tree vegetation may reduce costs of territory defence in Eurasian Nuthatch Sitta europaea Journal Article Bird Study, 61 , pp. 413-420, 2014. Abstract \| Links \| BibTeX @article{M.2014b, title = {Structure of tree vegetation may reduce costs of territory defence in Eurasian Nuthatch \textit{Sitta europaea}}, author = {M. Kašová and L. Naďo and P. Kaňuch}, url = {http://www.tandfonline.com/doi/abs/10.1080/00063657.2014.933771}, year = {2014}, date = {2014-07-15}, journal = {Bird Study}, volume = {61}, pages = {413-420}, abstract = {Capsule: In pastured old oak woodland, breeding pairs of Eurasian Nuthatch selected territories with significantly higher densities of trees and cavities. Aims: To define territorial borders that exist within a nuthatch population and to compare densities of trees and cavities between used and non-used parts of their available habitat in order to determine habitat preferences. Methods: The number and location of territories was estimated by mapping the individual positions of colour-ringed birds. We measured habitat characteristics in regular sampling grid (number of trees and number of cavities per 50×50 m) during three successive seasons and modelled probability of occurrence of nuthatch territories in the area. Results: Breeding pairs were observed to defend territories of median size between 1.46 and 2.93 ha. These sizes correspond well to high-quality habitat territories for this species. We found that pairs tended to occupy territories with higher densities of trees and cavities. Based on generalized linear mixed-effects model estimates, we found that in pastured oak woodland habitat with density of 60 trees per ha, the estimated probability of occurrence (with 95% confidence interval) of a nuthatch territory was about 96% (83−99). For cavity density, the probability of territory occurrence was about 74% (52−89) at the level of 60 cavities per ha. Conclusion: We suggest that higher tree and cavity densities reduce territory defence costs in the species because birds may use less energy during foraging, predation avoidance and competition for a nest hole.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Capsule: In pastured old oak woodland, breeding pairs of Eurasian Nuthatch selected territories with significantly higher densities of trees and cavities. Aims: To define territorial borders that exist within a nuthatch population and to compare densities of trees and cavities between used and non-used parts of their available habitat in order to determine habitat preferences. Methods: The number and location of territories was estimated by mapping the individual positions of colour-ringed birds. We measured habitat characteristics in regular sampling grid (number of trees and number of cavities per 50×50 m) during three successive seasons and modelled probability of occurrence of nuthatch territories in the area. Results: Breeding pairs were observed to defend territories of median size between 1.46 and 2.93 ha. These sizes correspond well to high-quality habitat territories for this species. We found that pairs tended to occupy territories with higher densities of trees and cavities. Based on generalized linear mixed-effects model estimates, we found that in pastured oak woodland habitat with density of 60 trees per ha, the estimated probability of occurrence (with 95% confidence interval) of a nuthatch territory was about 96% (83−99). For cavity density, the probability of territory occurrence was about 74% (52−89) at the level of 60 cavities per ha. Conclusion: We suggest that higher tree and cavity densities reduce territory defence costs in the species because birds may use less energy during foraging, predation avoidance and competition for a nest hole. Close http://www.tandfonline.com/doi/abs/10.1080/00063657.2014.933771 Close
Kaňuch, P; Jarčuška, B; Iorgu, E I; Iorgu, I S; Krištín, A Geographic variation in relict populations: genetics and phenotype of bush-cricket Pholidoptera frivaldskyi (Orthoptera) in Carpathians Journal Article Journal of Insect Conservation, 18 (2), pp. 257–266, 2014. Abstract \| Links \| BibTeX @article{Kaňuch2014, title = {Geographic variation in relict populations: genetics and phenotype of bush-cricket \textit{Pholidoptera frivaldskyi} (Orthoptera) in Carpathians}, author = {P. Kaňuch and B. Jarčuška and E.I. Iorgu and I.S. Iorgu and A. Krištín}, url = {http://link.springer.com/article/10.1007/s10841-014-9636-6}, doi = {10.1007/s10841-014-9636-6}, year = {2014}, date = {2014-04-01}, journal = {Journal of Insect Conservation}, volume = {18}, number = {2}, pages = {257–266}, abstract = {A decreasing population size is often causing species extinction, however, relict species persisting in small-sized populations counter this. We analysed spatial genetic variation and past changes in population size at the maternally-inherited mitochondrial DNA level to clarify the origin of all recently known isolated populations of Pholidoptera frivaldskyi occurring in the range of Carpathian Mountains. Along with that we analysed also morphological variation as some phenotypic traits can retain useful information on population genetic structure. We found a relatively low genetic diversity within isolated populations as 778 bp COI gene sequences revealed only 13 unique haplotypes (n = 173 individuals from 10 populations). The spatial analysis of molecular variance identified three geographically homogenous genetic clusters (one in Slovakia and two in Romania) with a high level of differentiation among them, suggesting restricted gene flow, whilst Bayesian skyline simulation reconstructed a negative demographic change through evolutionary time. Inferred genetic pattern clearly coincides with differences in males’ colour phenotype as the extent of pigmentation on the lateral pronotum varied significantly among genetic lineages. We suggest that geographical variation in the species populations has relict-like character and their isolated occurrence is not a result of recent introduction events. Identification of ‘evolutionary units’ may help in the conservation and management of this rare insect species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close A decreasing population size is often causing species extinction, however, relict species persisting in small-sized populations counter this. We analysed spatial genetic variation and past changes in population size at the maternally-inherited mitochondrial DNA level to clarify the origin of all recently known isolated populations of Pholidoptera frivaldskyi occurring in the range of Carpathian Mountains. Along with that we analysed also morphological variation as some phenotypic traits can retain useful information on population genetic structure. We found a relatively low genetic diversity within isolated populations as 778 bp COI gene sequences revealed only 13 unique haplotypes (n = 173 individuals from 10 populations). The spatial analysis of molecular variance identified three geographically homogenous genetic clusters (one in Slovakia and two in Romania) with a high level of differentiation among them, suggesting restricted gene flow, whilst Bayesian skyline simulation reconstructed a negative demographic change through evolutionary time. Inferred genetic pattern clearly coincides with differences in males’ colour phenotype as the extent of pigmentation on the lateral pronotum varied significantly among genetic lineages. We suggest that geographical variation in the species populations has relict-like character and their isolated occurrence is not a result of recent introduction events. Identification of ‘evolutionary units’ may help in the conservation and management of this rare insect species. Close http://link.springer.com/article/10.1007/s10841-014-9636-6 doi:10.1007/s10841-014-9636-6 Close
Kaňuch, P; Berggren, A; Cassel-Lundhagen, A Genetic diversity of a successful colonizer: isolated populations of Metrioptera roeselii regain variation at an unusually rapid rate Journal Article Ecology and Evolution, 4 (7), pp. 1117–1126, 2014. Links \| BibTeX @article{P.2014b, title = {Genetic diversity of a successful colonizer: isolated populations of \textit{Metrioptera roeselii} regain variation at an unusually rapid rate}, author = {P. Kaňuch and A. Berggren and A. Cassel-Lundhagen}, url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3997326/}, year = {2014}, date = {2014-04-01}, journal = {Ecology and Evolution}, volume = {4}, number = {7}, pages = {1117–1126}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3997326/ Close
Jarčuška, B; Kaňuch, P Female bush-crickets, Pholidoptera griseoaptera, that have received smaller ejaculates show a higher mating rate in the field Journal Article Journal of Insect Behavior, 27 (3), pp. 411–418, 2014. Abstract \| Links \| BibTeX @article{Jarčuška2014, title = {Female bush-crickets, \textit{Pholidoptera griseoaptera}, that have received smaller ejaculates show a higher mating rate in the field}, author = {B. Jarčuška and P. Kaňuch}, url = {http://link.springer.com/article/10.1007/s10905-014-9438-4}, doi = {10.1007/s10905-014-9438-4}, year = {2014}, date = {2014-01-29}, journal = {Journal of Insect Behavior}, volume = {27}, number = {3}, pages = {411–418}, abstract = {Females of numerous insect species are known to be polyandrous, but there have been relatively few studies of factors associated with the degree of polyandry in females in the field. Number of copulations by females is negatively associated with ejaculate size across bush-cricket species. Assessing intraspecific variability is important when looking for and interpreting trait evolution. Therefore the aim of this study was to test the association between ejaculate size (i.e. volume of spermatodose–spermatophore-like structure formed within the spermatheca) and mating rate (i.e. number of spermatodoses) of females of Pholidoptera griseoaptera, while accounting for female body size (pronotum length) and age (number of hind leg’s cuticular bands). The results based on field-caught individuals suggested that there were statistically significant negative association between smallest and mean spermatodose volume, respectively, and number of copulations in this nuptial gift-giving bush-cricket species. This is in accordance with interspecific associations between ejaculate size and polyandry. However, lower slope of the intraspecific relationship may suggest lower importance of the ejaculate size in explaining females’ mating rate variability in this nuptial gift-giving species.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Females of numerous insect species are known to be polyandrous, but there have been relatively few studies of factors associated with the degree of polyandry in females in the field. Number of copulations by females is negatively associated with ejaculate size across bush-cricket species. Assessing intraspecific variability is important when looking for and interpreting trait evolution. Therefore the aim of this study was to test the association between ejaculate size (i.e. volume of spermatodose–spermatophore-like structure formed within the spermatheca) and mating rate (i.e. number of spermatodoses) of females of Pholidoptera griseoaptera, while accounting for female body size (pronotum length) and age (number of hind leg’s cuticular bands). The results based on field-caught individuals suggested that there were statistically significant negative association between smallest and mean spermatodose volume, respectively, and number of copulations in this nuptial gift-giving bush-cricket species. This is in accordance with interspecific associations between ejaculate size and polyandry. However, lower slope of the intraspecific relationship may suggest lower importance of the ejaculate size in explaining females’ mating rate variability in this nuptial gift-giving species. Close http://link.springer.com/article/10.1007/s10905-014-9438-4 doi:10.1007/s10905-014-9438-4 Close
Hausknecht, R; Jacobs, S; Müller, J; Zink, R; Frey, H; Solheim, R; Vrezec, A; Krištín, A; Mihók, J; Kergalve, I; Saurola, P; Kuehn, R Phylogeographic analysis and genetic cluster recognition for the conservation of Ural Owls (Strix uralensis) in Europe Journal Article Journal of Ornithology, 155 (1), pp. 121–134, 2014. Links \| BibTeX @article{R.2014, title = {Phylogeographic analysis and genetic cluster recognition for the conservation of Ural Owls (\textit{Strix uralensis}) in Europe}, author = {R. Hausknecht and S. Jacobs and J. Müller and R. Zink and H. Frey and R. Solheim and A. Vrezec and A. Krištín and J. Mihók and I. Kergalve and P. Saurola and R. Kuehn}, url = {http://link.springer.com/article/10.1007%2Fs10336-013-0994-8}, year = {2014}, date = {2014-01-01}, journal = {Journal of Ornithology}, volume = {155}, number = {1}, pages = {121–134}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://link.springer.com/article/10.1007%2Fs10336-013-0994-8 Close
2013
Naďo, L; Kaňuch, P Dawn swarming in tree-dwelling bats – an unexplored behaviour Journal Article Acta Chiropterologica, 15 (2), pp. 387-392, 2013, ISSN: 1508-1109 . Abstract \| Links \| BibTeX @article{L.2013, title = {Dawn swarming in tree-dwelling bats – an unexplored behaviour}, author = {L. Naďo and P. Kaňuch}, url = {http://www.bioone.org/doi/abs/10.3161/150811013X679008}, issn = {1508-1109 }, year = {2013}, date = {2013-11-06}, journal = {Acta Chiropterologica}, volume = {15}, number = {2}, pages = {387-392}, abstract = {In colonial tree-dwelling bats, is vital to prevent disintegration of the group during frequent roost-switching. Thus some mechanisms which maintain group cohesion are expected. Dawn swarming is a set of behavioural displays observed in many such bats before they enter the roost. It is suggested that this behaviour plays a role in transferring information about the roost position. However this phenomenon had not been explored in detail. Based on qualitative and quantitative description of behaviour we suggest its potential function. Using field-based video-recordings of swarming sessions made on maternity colonies of Leisler’s bat (Nyctalus leisleri), we constructed ethograms which revealed remarkably similar behavioural sequences among individuals. For more than two hours prior to sunrise, individual flybys in front of the roost entrance predominated, followed by landings and leaps, which preceded the final entering of the roost. Interestingly, no obvious peak of behavioural activity was found at any particular time during swarming but a wave-like pattern was observed. We suggest that individuals are swarming in close proximity to the roosting tree with some purpose, most probably serving as a beacon for other group members and thus marking the current location of the roost.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close In colonial tree-dwelling bats, is vital to prevent disintegration of the group during frequent roost-switching. Thus some mechanisms which maintain group cohesion are expected. Dawn swarming is a set of behavioural displays observed in many such bats before they enter the roost. It is suggested that this behaviour plays a role in transferring information about the roost position. However this phenomenon had not been explored in detail. Based on qualitative and quantitative description of behaviour we suggest its potential function. Using field-based video-recordings of swarming sessions made on maternity colonies of Leisler’s bat (Nyctalus leisleri), we constructed ethograms which revealed remarkably similar behavioural sequences among individuals. For more than two hours prior to sunrise, individual flybys in front of the roost entrance predominated, followed by landings and leaps, which preceded the final entering of the roost. Interestingly, no obvious peak of behavioural activity was found at any particular time during swarming but a wave-like pattern was observed. We suggest that individuals are swarming in close proximity to the roosting tree with some purpose, most probably serving as a beacon for other group members and thus marking the current location of the roost. Close http://www.bioone.org/doi/abs/10.3161/150811013X679008 Close
Jarčuška, B; Day, M The effect of age on height growth in even-sized saplings of Fagus sylvatica L. Journal Article Trees, 27 (6), pp. 1821–1825, 2013. Abstract \| Links \| BibTeX @article{Jarčuška2013, title = {The effect of age on height growth in even-sized saplings of \textit{Fagus sylvatica} L.}, author = {B. Jarčuška and M. Day}, url = {http://link.springer.com/article/10.1007/s00468-013-0911-z https://docs.google.com/file/d/0Bz8ojhHeiNclV01LSTJGS0Zmak0/edit}, doi = {10.1007/s00468-013-0911-z}, year = {2013}, date = {2013-07-30}, journal = {Trees}, volume = {27}, number = {6}, pages = {1821–1825}, abstract = {Common beech (Fagus sylvatica L.) saplings were studied along gradients of light availability (4–82 % of full sunlight), initial size (9–290 cm), and age (2–25 years) to examine the interactive effect of these variables on saplings’ annual height growth. Although age was non-significant as a main effect in a linear model, sapling age had a significant interaction with the other variables. After controlling for the effects of size and light, partial regression revealed that height growth was negatively affected by sapling age. Observed growth decline in older common-sized saplings may be explained not as effect of age per se, but as indirect age-related effect probably induced through plastic response of saplings to past growth conditions.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Common beech (Fagus sylvatica L.) saplings were studied along gradients of light availability (4–82 % of full sunlight), initial size (9–290 cm), and age (2–25 years) to examine the interactive effect of these variables on saplings’ annual height growth. Although age was non-significant as a main effect in a linear model, sapling age had a significant interaction with the other variables. After controlling for the effects of size and light, partial regression revealed that height growth was negatively affected by sapling age. Observed growth decline in older common-sized saplings may be explained not as effect of age per se, but as indirect age-related effect probably induced through plastic response of saplings to past growth conditions. Close http://link.springer.com/article/10.1007/s00468-013-0911-z https://docs.google.com/file/d/0Bz8ojhHeiNclV01LSTJGS0Zmak0/edit doi:10.1007/s00468-013-0911-z Close
Krištín, A; Kaňuch, P A review of distribution and ecology of three Orthoptera species of European importance with contributions from their recent north-western range Journal Article North-Western Journal of Zoology, 9 (1), pp. 185-190, 2013. Links \| BibTeX @article{A.2013, title = {A review of distribution and ecology of three Orthoptera species of European importance with contributions from their recent north-western range}, author = {A. Krištín and P. Kaňuch}, url = {http://biozoojournals.ro/nwjz/content/v9n1/nwjz.132101.Kristin.pdf}, year = {2013}, date = {2013-06-01}, journal = {North-Western Journal of Zoology}, volume = {9}, number = {1}, pages = {185-190}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://biozoojournals.ro/nwjz/content/v9n1/nwjz.132101.Kristin.pdf Close
Latková, H; Sándor, A K; Krištín, A Diet composition of the scops owl (Otus scops) in central Romania Journal Article Slovak Raptor Journal , 6 , pp. 17–26, 2013, ISSN: 1337-3463. Links \| BibTeX @article{LATKOVÁ2013, title = {Diet composition of the scops owl (Otus scops) in central Romania}, author = {H. Latková and A.K. Sándor and A. Krištín}, url = {https://www.degruyter.com/view/j/srj.2012.6.issue-1/v10262-012-0064-9/v10262-012-0064-9.xml}, doi = {https://doi.org/10.2478/v10262-012-0064-9}, issn = {1337-3463}, year = {2013}, date = {2013-06-01}, journal = {Slovak Raptor Journal }, volume = {6}, pages = {17–26}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.degruyter.com/view/j/srj.2012.6.issue-1/v10262-012-0064-9/v10262-012[...] doi:https://doi.org/10.2478/v10262-012-0064-9 Close
Sliacka, A; Krištín, A; Naďo, L Response to Orthoptera to clear-cuts in beech forests Journal Article European Journal of Entomology, 110 (2), pp. 319-326, 2013. Links \| BibTeX @article{A.2013b, title = {Response to Orthoptera to clear-cuts in beech forests}, author = {A. Sliacka and A. Krištín and L. Naďo}, url = {http://www.eje.cz/artkey/eje-201302-0018_response_of_orthoptera_to_clear-cuts_in_beech_forests.php}, year = {2013}, date = {2013-04-11}, journal = {European Journal of Entomology}, volume = {110}, number = {2}, pages = {319-326}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.eje.cz/artkey/eje-201302-0018_response_of_orthoptera_to_clear-cuts_in[...] Close
Kaňuch, P; Kiehl, B; Low, M; Cassel-Lundhagen, A On variation of polyandry in a bush-cricket, Metrioptera roeselii, in northern Europe Journal Article Journal of Insect Science, 13 , pp. 1-10, 2013. Links \| BibTeX @article{P.2013, title = {On variation of polyandry in a bush-cricket, \textit{Metrioptera roeselii}, in northern Europe}, author = {P. Kaňuch and B. Kiehl and M. Low and A. Cassel-Lundhagen}, url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3735106/}, year = {2013}, date = {2013-03-02}, journal = {Journal of Insect Science}, volume = {13}, pages = {1-10}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3735106/ Close
Kaňuch, P; Berggren, A; Cassel-Lundhagen, A Colonization history of Metrioptera roeselii in northern Europe indicates human-mediated dispersal Journal Article Journal of Biogeography, 40 (5), pp. 977–987, 2013. Links \| BibTeX @article{P.2013b, title = {Colonization history of \textit{Metrioptera roeselii} in northern Europe indicates human-mediated dispersal}, author = {P. Kaňuch and A. Berggren and A. Cassel-Lundhagen}, url = {http://onlinelibrary.wiley.com/doi/10.1111/jbi.12048/abstract}, year = {2013}, date = {2013-01-01}, journal = {Journal of Biogeography}, volume = {40}, number = {5}, pages = {977–987}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://onlinelibrary.wiley.com/doi/10.1111/jbi.12048/abstract Close
Sliacka, A; Krištín, A; Naďo, L Orthoptera assemblages of beech stand plots during early succession stages after clearcutting Journal Article Journal of Forest Science, 59 (3), pp. 93-100, 2013. BibTeX @article{Sliacka2013, title = {Orthoptera assemblages of beech stand plots during early succession stages after clearcutting}, author = {A. Sliacka and A. Krištín and L. Naďo}, year = {2013}, date = {2013-01-01}, journal = {Journal of Forest Science}, volume = {59}, number = {3}, pages = {93-100}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Jarčuška, B; Mihál, I; Cicák, A; Tsakov, H Beech bark necrosis: partitioning the environmental and spatial variation of the damage severity in Central and South-Eastern Europe Journal Article Annals of Forest Research, 56 , pp. 317-338, 2013. Abstract \| Links \| BibTeX @article{Jarčuška2013b, title = {Beech bark necrosis: partitioning the environmental and spatial variation of the damage severity in Central and South-Eastern Europe}, author = {B. Jarčuška and I. Mihál and A. Cicák and H. Tsakov }, url = {http://www.afrjournal.org/index.php/afr/article/viewFile/34/53}, year = {2013}, date = {2013-01-01}, journal = {Annals of Forest Research}, volume = {56}, pages = {317-338}, abstract = { The beech bark necrosis (BBN) infestation severity of European beech (Fagus sylvatica L.) was assessed in regions of Central (CE) and South-Eastern Europe (SE). Altogether more than 10,000 trees were sampled at 114 sites. Using variation partitioning method, we examined the pure and shared effects of stand, site, climate and spatial sets of variables on mean BBN severity. Our rating included (i) the whole stand, (ii) tree social status classes, (iii) canopy (C) and (iv) understory (U) trees separately. We found that C trees were less affected by BBN than sub-canopy and U trees in both regions. There were found inter-regional differences in amount of explained variability (25.4–73.9%) for whole stand BBN and in the sensitivity of C and U trees to the environmental gradients. The analysis revealed that the climate and spatial variables followed by stand variables had the largest marginal effects on mean BBN severity in all models, while the site set of variables had the weakest one. More than half of the explained variation was shared among four sets of variables in SE, contrary to CE. Except to U trees in SE, the effect of climate – pure or spatially structured – remained the highest also after partitioning of variance; more in SE than in CE. Taking into account positive association between mean annual temperature and mean BBN severity in C trees in SE, reinforced negative effect of climate change on the necrosis might be expected to be more serious mainly in low situated beech forests there. Promoting the tree species diversity in areas with higher incidence of beech bark necrosis, i.e. in low altitudes in SE, could reduce the susceptibility of forests to the necrosis at regional level in the future. For better understanding of the relative importance of environmental and spatial variables on BBN severity, further research performed on finer spatial scale (extent and grain) is necessary, along with accounting for pathogens involved in the infestation.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The beech bark necrosis (BBN) infestation severity of European beech (Fagus sylvatica L.) was assessed in regions of Central (CE) and South-Eastern Europe (SE). Altogether more than 10,000 trees were sampled at 114 sites. Using variation partitioning method, we examined the pure and shared effects of stand, site, climate and spatial sets of variables on mean BBN severity. Our rating included (i) the whole stand, (ii) tree social status classes, (iii) canopy (C) and (iv) understory (U) trees separately. We found that C trees were less affected by BBN than sub-canopy and U trees in both regions. There were found inter-regional differences in amount of explained variability (25.4–73.9%) for whole stand BBN and in the sensitivity of C and U trees to the environmental gradients. The analysis revealed that the climate and spatial variables followed by stand variables had the largest marginal effects on mean BBN severity in all models, while the site set of variables had the weakest one. More than half of the explained variation was shared among four sets of variables in SE, contrary to CE. Except to U trees in SE, the effect of climate – pure or spatially structured – remained the highest also after partitioning of variance; more in SE than in CE. Taking into account positive association between mean annual temperature and mean BBN severity in C trees in SE, reinforced negative effect of climate change on the necrosis might be expected to be more serious mainly in low situated beech forests there. Promoting the tree species diversity in areas with higher incidence of beech bark necrosis, i.e. in low altitudes in SE, could reduce the susceptibility of forests to the necrosis at regional level in the future. For better understanding of the relative importance of environmental and spatial variables on BBN severity, further research performed on finer spatial scale (extent and grain) is necessary, along with accounting for pathogens involved in the infestation. Close http://www.afrjournal.org/index.php/afr/article/viewFile/34/53 Close
2012
Jarčuška, B; Milla, R Shoot level biomass allocation is affected by shoot type in Fagus sylvatica Journal Article Journal of Plant Ecology, 5 (4), pp. 422-428, 2012. Abstract \| Links \| BibTeX @article{Jarčuška2012, title = {Shoot level biomass allocation is affected by shoot type in Fagus sylvatica}, author = {B. Jarčuška and R. Milla}, url = {https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/jpe/5/4/10.1093_jpe_rts004/2/rts004.pdf?Expires=1498315012&Signature=gMJ91p2sieHzGVBiSjU2~lCvxOY5V~TRjfXM5E-6CGt7nB5RIm23HVwhZg7qqcOosG2CNliXlpM~-DDkDphE6O1bv5-xLKQk4PrOf4D7LkHXqEhtSpe4kH9B47cejKf3f4PzZBuFZn98XP20DEDioTOU50IOejoOcGYGCONBBAeUyYHDMg4snZfzN6IE~DSlWzCYISIYAFtCaJPbxaTk8yty6zhjUvyh~zM3WsfNlPihgzA52exTtyCGOqbj10r15oYdSL9WTOniPw-AXOrG~DZrjwaV6ArCw9hXbS5I-57vDzG98wbuDlAju88Mn8Sr9JWaBDOrxhOcXuYkEsf7-w__&Key-Pair-Id=APKAIUCZBIA4LVPAVW3Q https://drive.google.com/file/d/0Bz8ojhHeiNclMjEwZjJlMDUtYzc5YS00NGFjLWI1NWUtNzM0OWI2ZTZlMjgz/view}, year = {2012}, date = {2012-12-31}, journal = {Journal of Plant Ecology}, volume = {5}, number = {4}, pages = {422-428}, abstract = {Aims The present study aims (i) to examine if recently reported interspecific shoot-level biomass allocational trade-offs, i.e. isometric trade-offs between leaf mass (LM) and stem mass (SM) and between leaf size and leaf number, hold intraspecifically and (ii) to explore whether those scaling relationships are independent of shoot type (i.e. long vs. short shoots). Methods In order to address our questions, we used Fagus sylvatica saplings growing under a broad light range that were sampled in the Western Carpathians Mountains (Slovakia). Important Findings We found that: (i) intraspecific shoot-level biomass allocational trade-offs differ from those reported interspecifically and that (ii) long and short shoots differ in biomass allocation scaling coefficients. Allometric relationships with slopes statistically smaller than 1.0 or higher than −1.0, were found between SM and LM and between mean leafing intensity and individual leaf mass, respectively, in long shoots. In contrast, isometric scaling was found in short shoots. This suggests that leaf mass in short shoots is unaffected by shoot stem mass, in contrast to long shoots. Short shoots also had a larger fraction of biomass allocated to leaves. Beech shoots, as has been observed in other shoot dimorphic species, are specialized, with short shoots specializing in carbon gain and long shoots in space acquisition. A greater shift in LM than in SM among species during speciation shifting from allometric intraspecific relationships to an isometric interspecific scaling relationship between those traits could explain the discrepancies between the outputs of the present intraspecific study and others similar studies. This study draws attention to the importance of considering shoot types in future studies dealing with allocation rules in species with dimorphic shoots.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Aims The present study aims (i) to examine if recently reported interspecific shoot-level biomass allocational trade-offs, i.e. isometric trade-offs between leaf mass (LM) and stem mass (SM) and between leaf size and leaf number, hold intraspecifically and (ii) to explore whether those scaling relationships are independent of shoot type (i.e. long vs. short shoots). Methods In order to address our questions, we used Fagus sylvatica saplings growing under a broad light range that were sampled in the Western Carpathians Mountains (Slovakia). Important Findings We found that: (i) intraspecific shoot-level biomass allocational trade-offs differ from those reported interspecifically and that (ii) long and short shoots differ in biomass allocation scaling coefficients. Allometric relationships with slopes statistically smaller than 1.0 or higher than −1.0, were found between SM and LM and between mean leafing intensity and individual leaf mass, respectively, in long shoots. In contrast, isometric scaling was found in short shoots. This suggests that leaf mass in short shoots is unaffected by shoot stem mass, in contrast to long shoots. Short shoots also had a larger fraction of biomass allocated to leaves. Beech shoots, as has been observed in other shoot dimorphic species, are specialized, with short shoots specializing in carbon gain and long shoots in space acquisition. A greater shift in LM than in SM among species during speciation shifting from allometric intraspecific relationships to an isometric interspecific scaling relationship between those traits could explain the discrepancies between the outputs of the present intraspecific study and others similar studies. This study draws attention to the importance of considering shoot types in future studies dealing with allocation rules in species with dimorphic shoots. Close https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/jpe/5/4/10.1[...] https://drive.google.com/file/d/0Bz8ojhHeiNclMjEwZjJlMDUtYzc5YS00NGFjLWI1NWUtNzM[...] Close
Zhang, R; Song, G; Qu, Y; Alstrőm, P; Ramos, R; Xing, X; Ericson, P G P; Fjeldså, J; Wang, H; Yang, X; Krištín, A; Shestopalov, A M; Choe, J.Ch.; Lei, F M Comparative phylogeography of two widespread magpies: importance of habitat preference and breeding behavior on genetic structure in China Journal Article Molecular Phylogenetics and Evolution, 65 (2), pp. 562–572, 2012. Links \| BibTeX @article{R.2012b, title = {Comparative phylogeography of two widespread magpies: importance of habitat preference and breeding behavior on genetic structure in China}, author = {R. Zhang and G. Song and Y. Qu and P. Alstrőm and R. Ramos and X. Xing and P.G.P. Ericson and J. Fjeldså and H. Wang and X. Yang and A. Krištín and A.M. Shestopalov and J.Ch. Choe and F.M. Lei}, url = {http://www.sciencedirect.com/science/article/pii/S1055790312002680}, year = {2012}, date = {2012-11-01}, journal = {Molecular Phylogenetics and Evolution}, volume = {65}, number = {2}, pages = {562–572}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close http://www.sciencedirect.com/science/article/pii/S1055790312002680 Close
Vlk, R; Balvín, O; Krištín, A; Marhoul, P; Hrúz, V Distribution of the Southern Oak Bush-cricket Meconema meridionale (Orthoptera, Tettigoniidae) in the Czech Republic and Slovakia Journal Article Folia Oecologica, 39 (2), pp. 155-165, 2012. BibTeX @article{VLK2012, title = {Distribution of the Southern Oak Bush-cricket Meconema meridionale (Orthoptera, Tettigoniidae) in the Czech Republic and Slovakia}, author = {R. Vlk and O. Balvín and A. Krištín and P. Marhoul and V. Hrúz}, year = {2012}, date = {2012-08-01}, journal = {Folia Oecologica}, volume = {39}, number = {2}, pages = {155-165}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close
Kaňuch, P; Jarčuška, B; Schlosserová, D; Sliacka, A; Paule, L; Krištín, A Landscape configuration determines gene flow and phenotype in a flightless forest-edge ground-dwelling bush-cricket, Pholidoptera griseoaptera Journal Article Evolutionary Ecology, 26 (6), pp. 1331–1343, 2012. Abstract \| Links \| BibTeX @article{Kaňuch2012, title = {Landscape configuration determines gene flow and phenotype in a flightless forest-edge ground-dwelling bush-cricket, \textit{Pholidoptera griseoaptera}}, author = {P. Kaňuch and B. Jarčuška and D. Schlosserová and A. Sliacka and L. Paule and A. Krištín}, url = {http://link.springer.com/article/10.1007/s10682-012-9571-5 https://docs.google.com/file/d/0Bz8ojhHeiNclMno0bFprOTJrYVU/edit}, doi = {10.1007/s10682-012-9571-5}, year = {2012}, date = {2012-04-18}, journal = {Evolutionary Ecology}, volume = {26}, number = {6}, pages = {1331–1343}, abstract = {Spatial configuration of habitats influences genetic structure and population fitness whereas it affects mainly species with limited dispersal ability. To reveal how habitat fragmentation determines dispersal and dispersal-related morphology in a ground-dispersing insect species we used a bush-cricket (Pholidoptera griseoaptera) which is associated with forest-edge habitat. We analysed spatial genetic patterns together with variability of the phenotype in two forested landscapes with different levels of fragmentation. While spatial configuration of forest habitats did not negatively affect genetic characteristics related to the fitness of sampled populations, genetic differentiation was found higher among populations from an extensive forest. Compared to an agricultural matrix between forest patches, the matrix of extensive forest had lower permeability and posed barriers for the dispersal of this species. Landscape configuration significantly affected also morphological traits that are supposed to account for species dispersal potential; individuals from fragmented forest patches had longer hind femurs and a higher femur to pronotum ratio. This result suggests that selection pressure act differently on populations from both landscape types since dispersal-related morphology was related to the level of habitat fragmentation. Thus observed patterns may be explained as plastic according to the level of landscape configuration; while anthropogenic fragmentation of habitats for this species can lead to homogenization of spatial genetic structure.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Spatial configuration of habitats influences genetic structure and population fitness whereas it affects mainly species with limited dispersal ability. To reveal how habitat fragmentation determines dispersal and dispersal-related morphology in a ground-dispersing insect species we used a bush-cricket (Pholidoptera griseoaptera) which is associated with forest-edge habitat. We analysed spatial genetic patterns together with variability of the phenotype in two forested landscapes with different levels of fragmentation. While spatial configuration of forest habitats did not negatively affect genetic characteristics related to the fitness of sampled populations, genetic differentiation was found higher among populations from an extensive forest. Compared to an agricultural matrix between forest patches, the matrix of extensive forest had lower permeability and posed barriers for the dispersal of this species. Landscape configuration significantly affected also morphological traits that are supposed to account for species dispersal potential; individuals from fragmented forest patches had longer hind femurs and a higher femur to pronotum ratio. This result suggests that selection pressure act differently on populations from both landscape types since dispersal-related morphology was related to the level of habitat fragmentation. Thus observed patterns may be explained as plastic according to the level of landscape configuration; while anthropogenic fragmentation of habitats for this species can lead to homogenization of spatial genetic structure. Close http://link.springer.com/article/10.1007/s10682-012-9571-5 https://docs.google.com/file/d/0Bz8ojhHeiNclMno0bFprOTJrYVU/edit doi:10.1007/s10682-012-9571-5 Close
Hoi, H; Krištín, A; Hoi, C Traditional versus non-traditional nest-site choice: alternative decision strategies for nest-site selection Journal Article Oecologia, 169 (1), pp. 117-124, 2012. Links \| BibTeX @article{H.2012, title = {Traditional versus non-traditional nest-site choice: alternative decision strategies for nest-site selection}, author = {H. Hoi and A. Krištín and C. Hoi}, url = {https://www.ncbi.nlm.nih.gov/pubmed/22086240}, year = {2012}, date = {2012-01-01}, journal = {Oecologia}, volume = {169}, number = {1}, pages = {117-124}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close https://www.ncbi.nlm.nih.gov/pubmed/22086240 Close
2011
Jarčuška, B Morphological plasticity of leaves in natural regeneration of Fagus sylvatica: effect of direct and diffuse light, ontogeny and shoot type Journal Article Polish Journal of Ecology, 59 , pp. 339–353, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011, title = {Morphological plasticity of leaves in natural regeneration of Fagus sylvatica: effect of direct and diffuse light, ontogeny and shoot type}, author = {B. Jarčuška }, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclZTM4NWQ3NmEtNTlmMS00MWRmLTkxMjMtNmZiNmQ4ZmU1ZWZl/view}, year = {2011}, date = {2011-12-31}, journal = {Polish Journal of Ecology}, volume = {59}, pages = {339–353}, abstract = {It is known that the role of accessible light as a growth-determining factor in beech natural regeneration rises in importance with growth of individuals. However, the accompanied changes in leaf traits underlying this shift in light demands are not well known. The aim of this study was to investigate influence of ontogenetic stage (0.5 m high ‘seedlings‘, 2.1 m ‘saplings‘), shoot type (terminal, lateral long and lateral short) and diffuse and direct light on morphological traits of leaves at spring-shoot-level in naturally regenerated beech individuals – shoot mean leaf area (mLA), shoot mean leaf weight (mLW), leaf mass per area (LMA), leaf area per shoot unit length (LAL), leaf mass per shoot unit length (LWL), number of leaves per shoot unit length (NLL), and ratio of mean-leaf width to its length (LSh). Ontogenetic drift affected the values of these traits; its influence depended on shoot type and component of light. The light explained more trait variability in saplings compared to seedlings (on average 45% vs 32%). The most evident shift was in the case of direct light – while direct light explained on average 18% of traits variability in seedlings, it was about 42% in saplings. The saplings compared with seedlings showed higher values of mLA, mLW, LMA, LAL on short shoots, LWL on lateral long and short shoots, LSh on terminal and lateral long shoots, and lower NLL values on terminal and long lateral shoots. Plastic response to light was higher in saplings than in seedlings (except mLA). Generally, the observed traits showed more plastic response to diffuse than to direct light in seedlings; the response of saplings was similar in both light components. The most plastic trait was LMA, the least LSh. Individuals of saplings displayed higher plasticity in traits close correlating with annual length growth of main axis, which suggests that saplings would benefit from increased light availability more than seedlings. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close It is known that the role of accessible light as a growth-determining factor in beech natural regeneration rises in importance with growth of individuals. However, the accompanied changes in leaf traits underlying this shift in light demands are not well known. The aim of this study was to investigate influence of ontogenetic stage (0.5 m high ‘seedlings‘, 2.1 m ‘saplings‘), shoot type (terminal, lateral long and lateral short) and diffuse and direct light on morphological traits of leaves at spring-shoot-level in naturally regenerated beech individuals – shoot mean leaf area (mLA), shoot mean leaf weight (mLW), leaf mass per area (LMA), leaf area per shoot unit length (LAL), leaf mass per shoot unit length (LWL), number of leaves per shoot unit length (NLL), and ratio of mean-leaf width to its length (LSh). Ontogenetic drift affected the values of these traits; its influence depended on shoot type and component of light. The light explained more trait variability in saplings compared to seedlings (on average 45% vs 32%). The most evident shift was in the case of direct light – while direct light explained on average 18% of traits variability in seedlings, it was about 42% in saplings. The saplings compared with seedlings showed higher values of mLA, mLW, LMA, LAL on short shoots, LWL on lateral long and short shoots, LSh on terminal and lateral long shoots, and lower NLL values on terminal and long lateral shoots. Plastic response to light was higher in saplings than in seedlings (except mLA). Generally, the observed traits showed more plastic response to diffuse than to direct light in seedlings; the response of saplings was similar in both light components. The most plastic trait was LMA, the least LSh. Individuals of saplings displayed higher plasticity in traits close correlating with annual length growth of main axis, which suggests that saplings would benefit from increased light availability more than seedlings. Close https://drive.google.com/file/d/0Bz8ojhHeiNclZTM4NWQ3NmEtNTlmMS00MWRmLTkxMjMtNmZ[...] Close
Naďo, L; Ceľuch, M; Ševčík, M; Kaňuch, P Tree roosts and competitors of Nyctalus noctula in the Sihoť town park, Nitra, Slovakia Journal Article Vespertilio, 15 , pp. 71-77, 2011, ISSN: 1213-6123. Abstract \| Links \| BibTeX @article{Naďo2011, title = {Tree roosts and competitors of \textit{Nyctalus noctula} in the Sihoť town park, Nitra, Slovakia}, author = {L. Naďo and M. Ceľuch and M. Ševčík and P. Kaňuch}, url = {http://www.ceson.org/vespertilio/15/nado2012vesp.pdf}, issn = {1213-6123}, year = {2011}, date = {2011-01-01}, journal = {Vespertilio}, volume = {15}, pages = {71-77}, abstract = {Old parks provide roosting opportunities for tree-dwelling species in an extensively urbanized landscape. We compared morphological characteristics of roosts inhabited by Nyctalus noctula bats with those of other species such as birds and socially living insects, to find preferences of various tree-dwelling guilds. Morphological characteristics of roosts used by N. noctula did not significantly differ from those of other tree-dwelling species, and the analysis revealed a large degree of overlap in their realised niches. Especially bats and birds used hollows with common attributes. Hence, a question arises about possible competition for tree hollows among different groups of dwellers.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Old parks provide roosting opportunities for tree-dwelling species in an extensively urbanized landscape. We compared morphological characteristics of roosts inhabited by Nyctalus noctula bats with those of other species such as birds and socially living insects, to find preferences of various tree-dwelling guilds. Morphological characteristics of roosts used by N. noctula did not significantly differ from those of other tree-dwelling species, and the analysis revealed a large degree of overlap in their realised niches. Especially bats and birds used hollows with common attributes. Hence, a question arises about possible competition for tree hollows among different groups of dwellers. Close http://www.ceson.org/vespertilio/15/nado2012vesp.pdf Close
Barna, M; Jarčuška, B Prirodzená obnova buka [Natural regeneration of beech] Book Chapter Barna, M; Kulfan, J; Bublinec, E (Ed.): Buk a bukové ekosystémy Slovenska, Chapter 11, pp. 227-248, Veda, Bratislava, 2011. Links \| BibTeX @inbook{Barna2011, title = {Prirodzená obnova buka [Natural regeneration of beech]}, author = {M. Barna and B. Jarčuška }, editor = {M. Barna and J. Kulfan and E. Bublinec }, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclNWYwNzY4ZGMtYzQwYi00OGI2LThhNjQtMTU3NzA4NTc2OTQ3/view}, year = {2011}, date = {2011-01-01}, booktitle = {Buk a bukové ekosystémy Slovenska}, pages = {227-248}, publisher = {Veda}, address = {Bratislava}, chapter = {11}, keywords = {}, pubstate = {published}, tppubtype = {inbook} } Close https://drive.google.com/file/d/0Bz8ojhHeiNclNWYwNzY4ZGMtYzQwYi00OGI2LThhNjQtMTU[...] Close
Jarčuška, B; Barna, M Influence of light availability on height growth of naturally regenerated beech with different growth histories Journal Article Austrian Journal of Forest Science, 128 , pp. 53-65, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011, title = { Influence of light availability on height growth of naturally regenerated beech with different growth histories}, author = {B. Jarčuška and M. Barna}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclNmEwNTkwODEtM2NjNC00Yzk3LTgwZDEtNTczYTQ3Y2ViZTZh/view}, year = {2011}, date = {2011-01-01}, journal = {Austrian Journal of Forest Science}, volume = {128}, pages = {53-65}, abstract = {We studied the influence of diffuse light supply on height growth dynamics in European beech natural regeneration. We evaluated the annual growth of the main axis over 5 yrs in 7-yr-old seedlings germinated 1 yr after a canopy release, and in 12-yr-old individuals of advance regeneration germinated 5 yrs before the release. In the advance regeneration, a significant response of annual growth to diffuse light was recorded six years after the canopy release. The correlation between the initial height and annual shoot growth in the seedlings over the study period was high (R2 ranged between Seite 54 Benjamín Jarcuška and Milan Barna 0.38 – 0.58); on the other hand, in the advance regeneration, significant correlation was not observed until the 7-th year after the overstory canopy release. We discuss the possible causes underlying the delay of height growth response to the current – modified light conditions in the advance regeneration.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close We studied the influence of diffuse light supply on height growth dynamics in European beech natural regeneration. We evaluated the annual growth of the main axis over 5 yrs in 7-yr-old seedlings germinated 1 yr after a canopy release, and in 12-yr-old individuals of advance regeneration germinated 5 yrs before the release. In the advance regeneration, a significant response of annual growth to diffuse light was recorded six years after the canopy release. The correlation between the initial height and annual shoot growth in the seedlings over the study period was high (R2 ranged between Seite 54 Benjamín Jarcuška and Milan Barna 0.38 – 0.58); on the other hand, in the advance regeneration, significant correlation was not observed until the 7-th year after the overstory canopy release. We discuss the possible causes underlying the delay of height growth response to the current – modified light conditions in the advance regeneration. Close https://drive.google.com/file/d/0Bz8ojhHeiNclNmEwNTkwODEtM2NjNC00Yzk3LTgwZDEtNTc[...] Close
Jarčuška, B; Barna, M Plasticity in above-ground biomass allocation in Fagus sylvatica L. saplings in response to light availability Journal Article Annals of Forest Research, 54 , pp. 151-160, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011c, title = {Plasticity in above-ground biomass allocation in Fagus sylvatica L. saplings in response to light availability}, author = {B. Jarčuška and M. Barna }, url = {http://www.editurasilvica.ro/afr/54/2/jarcuska.pdf}, year = {2011}, date = {2011-01-01}, journal = {Annals of Forest Research}, volume = {54}, pages = {151-160}, abstract = {The paper presents the production and allocation of aboveground biomass in 7-yr-old saplings of European beech (Fagus sylvatica L.) growing along an environmental gradient with a total light transmittance (Tot) ranging from 6% to 80%. Non-overtopped individuals, not suppressed by surrounding saplings were sampled at the end of growing season. The total aboveground biomass production on the gradient varied within 1.7-261.0. Light in the log-log linear relationship accounted for 83% of this variability. The plants growing in the shade had lower mass of aboveground compartments, lower total leaf area, higher fraction of biomass allocated in foliar mass and lower in the in the woody mass compared to the plants growing in the high-light environment. The major changes in effects of light availability on biomass allocation occurred up to about 20% of Tot. Decreasing accessible light was responsible for a non-linear increase in interceptive leaf area per unit of biomass and decrease in amount of biomass allocated per a unit of branch and stem length – necessary for leaf display. There was a close correlation between mass of aboveground plant compartments, documented by Pearson’s r values of 0.98-0.99. Accompanied with different plant size, observed differences in biomass partitioning in response to light could be viewed as plastic adjustment to environmental heterogeneity in even-aged European beech saplings.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The paper presents the production and allocation of aboveground biomass in 7-yr-old saplings of European beech (Fagus sylvatica L.) growing along an environmental gradient with a total light transmittance (Tot) ranging from 6% to 80%. Non-overtopped individuals, not suppressed by surrounding saplings were sampled at the end of growing season. The total aboveground biomass production on the gradient varied within 1.7-261.0. Light in the log-log linear relationship accounted for 83% of this variability. The plants growing in the shade had lower mass of aboveground compartments, lower total leaf area, higher fraction of biomass allocated in foliar mass and lower in the in the woody mass compared to the plants growing in the high-light environment. The major changes in effects of light availability on biomass allocation occurred up to about 20% of Tot. Decreasing accessible light was responsible for a non-linear increase in interceptive leaf area per unit of biomass and decrease in amount of biomass allocated per a unit of branch and stem length – necessary for leaf display. There was a close correlation between mass of aboveground plant compartments, documented by Pearson’s r values of 0.98-0.99. Accompanied with different plant size, observed differences in biomass partitioning in response to light could be viewed as plastic adjustment to environmental heterogeneity in even-aged European beech saplings. Close http://www.editurasilvica.ro/afr/54/2/jarcuska.pdf Close
Jarčuška, B Is preformation of future shoots in Fagus sylvatica L. buds reflected in bud/sprouted shoot traits relationships? Journal Article Dendrobiology, 66 , pp. 25-31, 2011. Abstract \| Links \| BibTeX @article{Jarčuška2011c, title = {Is preformation of future shoots in Fagus sylvatica L. buds reflected in bud/sprouted shoot traits relationships?}, author = {B. Jarčuška}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclZWIyZjhmYjUtYzlmNi00ZTAxLTliYjQtM2M3ZGQ1NGI1MGY1/view}, year = {2011}, date = {2011-01-01}, journal = {Dendrobiology}, volume = {66}, pages = {25-31}, abstract = {The present study was aimed to find out whether the preformation of future shoot’s organs within a bud is reflected in the bud size/shoot functional traits’ size relationships. The survey attempts to evaluate whether relationships between the bud mass and stem mass, leaf mass, leaf area, total mass and number of leaves, respectively, of spring-shoot sprouted by the bud in Fagus sylvatica (L.) saplings are affected by parental bud location within shoot and parental shoot type. Dry mass of the terminal bud, the first and the last lateral buds placed on terminal and uppermost lateral shoots was estimated nondestructively for 58 beech saplings in December 2008. The shoots sprouted from the measured buds were sampled at the end of growing season, in August 2009. Bud mass, parental shoot type and bud location explained about 90% of shoot traits variability in full-factorial ANOVA. The leaf mass was the only shoot trait not affected by parental shoot type and bud location within shoot in scaling relationship with bud mass. There was not found differences among intercepts across parental shoot types and bud locations, however significant shift along common slope was observed among them. The presented findings could be viewed as a confirmation of the preformation and full development of leaf primordia within the European beech buds prior to bud burst. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close The present study was aimed to find out whether the preformation of future shoot’s organs within a bud is reflected in the bud size/shoot functional traits’ size relationships. The survey attempts to evaluate whether relationships between the bud mass and stem mass, leaf mass, leaf area, total mass and number of leaves, respectively, of spring-shoot sprouted by the bud in Fagus sylvatica (L.) saplings are affected by parental bud location within shoot and parental shoot type. Dry mass of the terminal bud, the first and the last lateral buds placed on terminal and uppermost lateral shoots was estimated nondestructively for 58 beech saplings in December 2008. The shoots sprouted from the measured buds were sampled at the end of growing season, in August 2009. Bud mass, parental shoot type and bud location explained about 90% of shoot traits variability in full-factorial ANOVA. The leaf mass was the only shoot trait not affected by parental shoot type and bud location within shoot in scaling relationship with bud mass. There was not found differences among intercepts across parental shoot types and bud locations, however significant shift along common slope was observed among them. The presented findings could be viewed as a confirmation of the preformation and full development of leaf primordia within the European beech buds prior to bud burst. Close https://drive.google.com/file/d/0Bz8ojhHeiNclZWIyZjhmYjUtYzlmNi00ZTAxLTliYjQtM2M[...] Close
2010
Jarčuška, B; Kucbel, S; Jaloviar, P Comparison of output results from two programmes for hemispherical image analysis: Gap Light Analyser and WinScanopy Journal Article Journal of Forest Science, 56 , pp. 147–153, 2010. Abstract \| Links \| BibTeX @article{Jarčuška2010, title = {Comparison of output results from two programmes for hemispherical image analysis: Gap Light Analyser and WinScanopy}, author = {B. Jarčuška and S. Kucbel and P. Jaloviar}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclcVZaa0xlSFFTbUtVeDhhT3dYR0M0QQ/view}, year = {2010}, date = {2010-01-01}, journal = {Journal of Forest Science}, volume = {56}, pages = {147–153}, abstract = {We compare the results of the analysis of hemispherical images (of a broadleaved and a coniferous forest) obtained using the Gap Light Analyser (GLA) software and the results obtained by analyzing the same images with the aid of WinScanopy. The two packages were used to calculate relative total, relative diffuse and relative direct transmittance, canopy openness, and leaf area index. Our aim was to find out whether it is possible to compare the studies using different software packages for determining light conditions. The binary pixel classification of images of canopy and sky was performed automatically (in the case of Gap Light Analyser, using the SideLook programme). The threshold values determined by the SideLook programme were lower compared to the WinScanopy, which was also reflected in the evaluated output results. There was a strong positive correlation between the results obtained with the two software packages (R2 ranges from 0.814 to 0.999). However, when the Gap Light Analyser analysis was applied to the threshold values obtained with the SideLook, the output results mostly manifested systematic differences in comparison with the output results obtained using the WinScanopy. Using the same threshold value in both programmes, the differences between the output values were quite small (a minimum of 0.038 m2.m–2 for LAI in the spruce forest and a maximum of 0.738% for total relative transmittance also in the spruce forest). The differences in some characteristics were statistically significant, on the other hand, both the photo series had only the identical direct transmittance values. The observed differences can be explained by differences in the calibration of the used camera-lens pair, different image registration techniques and different theoretical background and models used in the two software packages. It follows that it is also necessary to be aware of possible differences when comparing the outputs of the two compared software packages analyzing photos obtained applying the same methodical approach.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close We compare the results of the analysis of hemispherical images (of a broadleaved and a coniferous forest) obtained using the Gap Light Analyser (GLA) software and the results obtained by analyzing the same images with the aid of WinScanopy. The two packages were used to calculate relative total, relative diffuse and relative direct transmittance, canopy openness, and leaf area index. Our aim was to find out whether it is possible to compare the studies using different software packages for determining light conditions. The binary pixel classification of images of canopy and sky was performed automatically (in the case of Gap Light Analyser, using the SideLook programme). The threshold values determined by the SideLook programme were lower compared to the WinScanopy, which was also reflected in the evaluated output results. There was a strong positive correlation between the results obtained with the two software packages (R2 ranges from 0.814 to 0.999). However, when the Gap Light Analyser analysis was applied to the threshold values obtained with the SideLook, the output results mostly manifested systematic differences in comparison with the output results obtained using the WinScanopy. Using the same threshold value in both programmes, the differences between the output values were quite small (a minimum of 0.038 m2.m–2 for LAI in the spruce forest and a maximum of 0.738% for total relative transmittance also in the spruce forest). The differences in some characteristics were statistically significant, on the other hand, both the photo series had only the identical direct transmittance values. The observed differences can be explained by differences in the calibration of the used camera-lens pair, different image registration techniques and different theoretical background and models used in the two software packages. It follows that it is also necessary to be aware of possible differences when comparing the outputs of the two compared software packages analyzing photos obtained applying the same methodical approach. Close https://drive.google.com/file/d/0Bz8ojhHeiNclcVZaa0xlSFFTbUtVeDhhT3dYR0M0QQ/view Close
Jarčuška, B Allometry of winter buds in beech (Fagus sylvatica L.) natural regeneration with respect to its volume and dry weight estimation. Journal Article Folia Oecologica, 37 (1), pp. 42-50, 2010. Abstract \| Links \| BibTeX @article{Jarčuška2010b, title = {Allometry of winter buds in beech (Fagus sylvatica L.) natural regeneration with respect to its volume and dry weight estimation. }, author = {B Jarčuška}, url = {http://ife.sk/wp-content/uploads/2016/10/FO_37_1_jarčuska.pdf}, year = {2010}, date = {2010-01-01}, journal = {Folia Oecologica}, volume = {37}, number = {1}, pages = {42-50}, abstract = {Allometric relationships among bud’s fresh volume (V), length (L), maximal diameter (MD), basal diameter (BD), and dry weight (W) in beech (Fagus sylvatica L.) saplings manifest strong mutual correlations. These correlations depend on the bud type determined by bud position on shoot, shoot type and shoot position in crown. However, in most cases the differences among the bud types are not distinct – individual types can be classified into several overlapping groups. The bud type significantly influences bud shape characterised by the ratios of BD to MD, and BD to L; on the other hand, it has no influence on MD/L and bud density (V/W). Influence of accessible light on bud shape and density also depends on bud type. For non-destructive estimation of V and W, we have prepared a regression model using as independent variable the volume of cylinder enclosing the bud (Vcyl). This model could explain 98% of the variation in V and W, with a relative accuracy of 6.4% for V, and 5.4% for W (P = 0.95). The performance of the model was verified by a test allowing us to conclude that the model outputs are comparable with directly measured values.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Allometric relationships among bud’s fresh volume (V), length (L), maximal diameter (MD), basal diameter (BD), and dry weight (W) in beech (Fagus sylvatica L.) saplings manifest strong mutual correlations. These correlations depend on the bud type determined by bud position on shoot, shoot type and shoot position in crown. However, in most cases the differences among the bud types are not distinct – individual types can be classified into several overlapping groups. The bud type significantly influences bud shape characterised by the ratios of BD to MD, and BD to L; on the other hand, it has no influence on MD/L and bud density (V/W). Influence of accessible light on bud shape and density also depends on bud type. For non-destructive estimation of V and W, we have prepared a regression model using as independent variable the volume of cylinder enclosing the bud (Vcyl). This model could explain 98% of the variation in V and W, with a relative accuracy of 6.4% for V, and 5.4% for W (P = 0.95). The performance of the model was verified by a test allowing us to conclude that the model outputs are comparable with directly measured values. Close http://ife.sk/wp-content/uploads/2016/10/FO_37_1_jarčuska.pdf Close
2009
Jarčuška, B Growth, survival, density, biomass partitioning and morphological adaptations of natural regeneration in Fagus sylvatica. A review Journal Article Dendrobiology, 61 , pp. 3-11, 2009. Abstract \| Links \| BibTeX @article{Jarčuška2009, title = {Growth, survival, density, biomass partitioning and morphological adaptations of natural regeneration in Fagus sylvatica. A review}, author = {B. Jarčuška}, url = {http://www.idpan.poznan.pl/images/stories/dendrobiology/vol61/61_03_11.pdf}, year = {2009}, date = {2009-01-01}, journal = {Dendrobiology}, volume = {61}, pages = {3-11}, abstract = {Beech is an important woody species in terms of ecology, and it also has a considerable commercial value. This fact is also reflectedin a high number of scientific papers handling the issue of natural regeneration of this woody plant. The aim of this review is to analyse influence of resources availability and impact of other factors (competition) on height and diameter growth, survival, density, biomass partitioning and morphological adjustment in naturally regenerated beech seedlings and saplings. It pays a particular attention to light – the factor that influences, directly or indirectly, other environmental factors, and consequently, has the key influence on the performance of beech natural regeneration. This contribution includes information about e.g. shade tolerance and mortality-light relationships, ability to increase growth under improved light conditions, dependence of trees growth on their individual size and age etc. In spite of a large number of papers handling the issue of research on beech natural regeneration, growth responses in individual plants are difficult to predict, because the factors involved are numerous. Thus, the process of natural regeneration is in fact interactive, and even retroactive: any change in one of the involved factors induces adjustments of the others. }, keywords = {}, pubstate = {published}, tppubtype = {article} } Close Beech is an important woody species in terms of ecology, and it also has a considerable commercial value. This fact is also reflectedin a high number of scientific papers handling the issue of natural regeneration of this woody plant. The aim of this review is to analyse influence of resources availability and impact of other factors (competition) on height and diameter growth, survival, density, biomass partitioning and morphological adjustment in naturally regenerated beech seedlings and saplings. It pays a particular attention to light – the factor that influences, directly or indirectly, other environmental factors, and consequently, has the key influence on the performance of beech natural regeneration. This contribution includes information about e.g. shade tolerance and mortality-light relationships, ability to increase growth under improved light conditions, dependence of trees growth on their individual size and age etc. In spite of a large number of papers handling the issue of research on beech natural regeneration, growth responses in individual plants are difficult to predict, because the factors involved are numerous. Thus, the process of natural regeneration is in fact interactive, and even retroactive: any change in one of the involved factors induces adjustments of the others. Close http://www.idpan.poznan.pl/images/stories/dendrobiology/vol61/61_03_11.pdf Close
Jarčuška, B Zaujímavé dendrologické nálezy z východnej časti Levočských vrchov a západnej časti Bachurne. Journal Article Natura Carpatica, 50 , pp. 121-124, 2009. Abstract \| Links \| BibTeX @article{Jarčuška2009b, title = {Zaujímavé dendrologické nálezy z východnej časti Levočských vrchov a západnej časti Bachurne.}, author = {B. Jarčuška}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclMjQ5YTcyYzItMDA2NC00M2Y3LTk2MjYtM2YzMzU0ZTc0M2Qy/view?ddrp=1&hl=en#}, year = {2009}, date = {2009-01-01}, journal = {Natura Carpatica}, volume = {50}, pages = {121-124}, abstract = {With this contribution we confirm occurrence of the species Alnus glutinosa, Acer campestre, Carpinus betulus in eastern parts of the Levocske vrchy Mts and Sorbus aria in western part of the Bachuren Mts (valley of the Torysa River). The presence of these speciesin this area has not been documented yet. We also report a new locality (the second known) with Pinus mugo in the Levocske vrchy Mts - the most eastern locality with natural occurrence of this woody plant in Slovakia.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close With this contribution we confirm occurrence of the species Alnus glutinosa, Acer campestre, Carpinus betulus in eastern parts of the Levocske vrchy Mts and Sorbus aria in western part of the Bachuren Mts (valley of the Torysa River). The presence of these speciesin this area has not been documented yet. We also report a new locality (the second known) with Pinus mugo in the Levocske vrchy Mts - the most eastern locality with natural occurrence of this woody plant in Slovakia. Close https://drive.google.com/file/d/0Bz8ojhHeiNclMjQ5YTcyYzItMDA2NC00M2Y3LTk2MjYtM2Y[...] Close
Jarčuška, B Ľalia cibuľkonosná pravá (Lilium bulbiferum L. subsp. bulbiferum) v blízkosti Brezovice (východné Slovensko) Journal Article Natura Carpatica, 50 , pp. 137-140, 2009. Abstract \| Links \| BibTeX @article{Jarčuška2009b, title = {Ľalia cibuľkonosná pravá (Lilium bulbiferum L. subsp. bulbiferum) v blízkosti Brezovice (východné Slovensko)}, author = {B. Jarčuška}, url = {https://drive.google.com/file/d/0Bz8ojhHeiNclM2U2YjY4OTUtNzVjYy00MDE1LThhYjctYTdmYmFjZDQ5YThl/view?ddrp=1&hl=en#}, year = {2009}, date = {2009-01-01}, journal = {Natura Carpatica}, volume = {50}, pages = {137-140}, abstract = {This contribution brings data about a locality with occurrence of orange lily (Lilium bulbiferum L. subsp. bulbiferum) in the vicinity of the village Brezovica (Sabinov district, Eastern Slovakia), Bachuren Mts. We have found there 40 flowering individuals and 122 infertile individuals of this in-Slovakia-vulnerable species in June 2009.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close This contribution brings data about a locality with occurrence of orange lily (Lilium bulbiferum L. subsp. bulbiferum) in the vicinity of the village Brezovica (Sabinov district, Eastern Slovakia), Bachuren Mts. We have found there 40 flowering individuals and 122 infertile individuals of this in-Slovakia-vulnerable species in June 2009. Close https://drive.google.com/file/d/0Bz8ojhHeiNclM2U2YjY4OTUtNzVjYy00MDE1LThhYjctYTd[...] Close
2008
Jaloviar, P; Jarčuška, B; Sarvašová, I Influence of substrate kind and cultivation technology on quantitative characteristic of spruce (Picea abies (L.) Karst.) seedlings´ root systems: comparison between quantitative traits. Journal Article Folia Oekologica, 35 (2) , pp. 25-32, 2008. Abstract \| Links \| BibTeX @article{Jaloviar2008, title = { Influence of substrate kind and cultivation technology on quantitative characteristic of spruce (Picea abies (L.) Karst.) seedlings´ root systems: comparison between quantitative traits.}, author = {P. Jaloviar and B. Jarčuška and I. Sarvašová }, url = {http://ife.sk/wp-content/uploads/2016/10/FO_35_2_jaloviar.pdf}, year = {2008}, date = {2008-01-01}, journal = {Folia Oekologica}, volume = {35 (2)}, pages = {25-32}, abstract = {This work deals with evaluation of influence of four different management methods and substrate types on basic quantitative parameters of root systems in one-year old spruce (Picea abies (L.) Karst.) seedlings. There were tested differences between three alternatives consisting of bare-rooted plants and one variant of ball plants grown under applying the technique Lännen Plantek. The bare-rooted seedlings were cultivated in pure peat substrate (control) and in peat substrates supplemented with alginite and Baktomix. The tested traits were the following: root system weight, length, surface, volume, mean diameter and number of endings. For testing differences between the mean values of these characteristics, we used variance analysis. There has been found that in all the evaluated traits, the highest values were obtained with using the method Lännen Plantek. These values were several times higher that the next lower value. The variability of the measured values was about 30%. The lowest mean values were obtained in case of the peat substrate enriched with alginite. There is supposed that alginite caused water-logging of substrate and significantly retarded growth under the wetting regime favourable for all the other variants.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Close This work deals with evaluation of influence of four different management methods and substrate types on basic quantitative parameters of root systems in one-year old spruce (Picea abies (L.) Karst.) seedlings. There were tested differences between three alternatives consisting of bare-rooted plants and one variant of ball plants grown under applying the technique Lännen Plantek. The bare-rooted seedlings were cultivated in pure peat substrate (control) and in peat substrates supplemented with alginite and Baktomix. The tested traits were the following: root system weight, length, surface, volume, mean diameter and number of endings. For testing differences between the mean values of these characteristics, we used variance analysis. There has been found that in all the evaluated traits, the highest values were obtained with using the method Lännen Plantek. These values were several times higher that the next lower value. The variability of the measured values was about 30%. The lowest mean values were obtained in case of the peat substrate enriched with alginite. There is supposed that alginite caused water-logging of substrate and significantly retarded growth under the wetting regime favourable for all the other variants. Close http://ife.sk/wp-content/uploads/2016/10/FO_35_2_jaloviar.pdf Close

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