Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest management

The greater noctule (Nyctalus lasiopterus) is a threatened tree-roosting bat species with a fragmented distribution, possibly due to limited roosting habitat. Deforestation, tree disease and climate change are reducing forest and roost availability. Effective conservation action and forest managemen...

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Main Authors: Detlev H. Kelm, David Pastor-Bevia, Jesús Nogueras, Ana G. Popa-Lisseanu, Íñigo Sánchez, Carlos Ibáñez
Format: Article
Language:English
Published: The Royal Society 2025-08-01
Series:Royal Society Open Science
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Online Access:https://royalsocietypublishing.org/doi/10.1098/rsos.251266
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author Detlev H. Kelm
David Pastor-Bevia
Jesús Nogueras
Ana G. Popa-Lisseanu
Íñigo Sánchez
Carlos Ibáñez
author_facet Detlev H. Kelm
David Pastor-Bevia
Jesús Nogueras
Ana G. Popa-Lisseanu
Íñigo Sánchez
Carlos Ibáñez
author_sort Detlev H. Kelm
collection DOAJ
description The greater noctule (Nyctalus lasiopterus) is a threatened tree-roosting bat species with a fragmented distribution, possibly due to limited roosting habitat. Deforestation, tree disease and climate change are reducing forest and roost availability. Effective conservation action and forest management require detailed knowledge of the bats’ roosting behaviour and requirements, which is lacking for this species, particularly in southern European forests. We studied the roosting behaviour of 25 radio-tagged females from three maternity colonies in the forest and the urban environment, as well as 11 males from a forest mating site in Spain. We found similar behaviour and roost group sizes (14–18 individuals) for both sexes in the forest, where bats mainly roosted in woodpecker holes in larger trees of abundant tree species. Bats switched between many roosts (0.2–0.3 roosts d−1) across large forest areas (up to 1300 ha). At the urban site, females rarely switched between four exotic palm tree roosts, with roost group sizes reaching 144 individuals. Despite its adaptability, N. lasiopterus may require large forest roosting areas that provide a greater roost diversity, aiding thermoregulation and predator avoidance. Conservation efforts should focus on protecting large forests with high woodpecker abundance to ensure roost availability, supported by artificial bat roosts.
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spelling doaj-art-f79e36b0258d4f5ca7ae805a1bf6d1b12025-08-20T03:39:00ZengThe Royal SocietyRoyal Society Open Science2054-57032025-08-0112810.1098/rsos.251266Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest managementDetlev H. Kelm0David Pastor-Bevia1Jesús Nogueras2Ana G. Popa-Lisseanu3Íñigo Sánchez4Carlos Ibáñez5Ecology and Evolution, Estación Biológica de Doñana CSIC, Sevilla, SpainEcology and Evolution, Estación Biológica de Doñana CSIC, Sevilla, SpainEcology and Evolution, Estación Biológica de Doñana CSIC, Sevilla, SpainEcology and Evolution, Estación Biológica de Doñana CSIC, Sevilla, SpainZoobotánico Jerez, Jerez de la Frontera, SpainEcology and Evolution, Estación Biológica de Doñana CSIC, Sevilla, SpainThe greater noctule (Nyctalus lasiopterus) is a threatened tree-roosting bat species with a fragmented distribution, possibly due to limited roosting habitat. Deforestation, tree disease and climate change are reducing forest and roost availability. Effective conservation action and forest management require detailed knowledge of the bats’ roosting behaviour and requirements, which is lacking for this species, particularly in southern European forests. We studied the roosting behaviour of 25 radio-tagged females from three maternity colonies in the forest and the urban environment, as well as 11 males from a forest mating site in Spain. We found similar behaviour and roost group sizes (14–18 individuals) for both sexes in the forest, where bats mainly roosted in woodpecker holes in larger trees of abundant tree species. Bats switched between many roosts (0.2–0.3 roosts d−1) across large forest areas (up to 1300 ha). At the urban site, females rarely switched between four exotic palm tree roosts, with roost group sizes reaching 144 individuals. Despite its adaptability, N. lasiopterus may require large forest roosting areas that provide a greater roost diversity, aiding thermoregulation and predator avoidance. Conservation efforts should focus on protecting large forests with high woodpecker abundance to ensure roost availability, supported by artificial bat roosts.https://royalsocietypublishing.org/doi/10.1098/rsos.251266roost-switchingfission–fusionroosting ecologybat conservationbat roostsroosting area
spellingShingle Detlev H. Kelm
David Pastor-Bevia
Jesús Nogueras
Ana G. Popa-Lisseanu
Íñigo Sánchez
Carlos Ibáñez
Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest management
Royal Society Open Science
roost-switching
fission–fusion
roosting ecology
bat conservation
bat roosts
roosting area
title Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest management
title_full Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest management
title_fullStr Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest management
title_full_unstemmed Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest management
title_short Roosting behaviour of greater noctule bats (Nyctalus lasiopterus) in forests in Spain and implications for species conservation and forest management
title_sort roosting behaviour of greater noctule bats nyctalus lasiopterus in forests in spain and implications for species conservation and forest management
topic roost-switching
fission–fusion
roosting ecology
bat conservation
bat roosts
roosting area
url https://royalsocietypublishing.org/doi/10.1098/rsos.251266
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