2017
|
 | 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, 2017. 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},
year = {2017},
date = {2017-01-01},
journal = {Behaviour},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2016
|
 | 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}
}
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. |
 | 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}
}
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. |
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}
}
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. |
 | 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}
}
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. |
2014
|
 | 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}
}
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. |
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}
}
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. |
 | 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}
}
|
 | 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}
}
|
2011
|
 | 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}
}
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. |
