Habitat displacement effect between two competing owl species in fragmented forests
Many owl species use the same nesting and food resources, which causes strong interspecific competition and spatio-temporal niche separation. We made use of a recent colonisation of Ural Owls (Strix uralensis) in southern Poland to compare habitat preferences of Tawny Owls (Strix aluco) allopatry an...
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ftslunivuppsala:oai:pub.epsilon.slu.se:13079 2023-05-15T18:27:34+02:00 Habitat displacement effect between two competing owl species in fragmented forests Kajtoch, Łukasz Zmihorski, Michal Wieczorek, Paweł 2015 application/pdf https://pub.epsilon.slu.se/13079/ https://pub.epsilon.slu.se/13079/1/kajtoch_et_al_160307.pdf sv eng swe eng https://pub.epsilon.slu.se/13079/1/kajtoch_et_al_160307.pdf Kajtoch, Łukasz and Zmihorski, Michal and Wieczorek, Paweł (2015). Habitat displacement effect between two competing owl species in fragmented forests. Population ecology. 57 :3 , 517-527 [Research article] cc_by_4 CC-BY Ecology Research article PeerReviewed info:eu-repo/semantics/article 2015 ftslunivuppsala 2022-01-09T19:13:45Z Many owl species use the same nesting and food resources, which causes strong interspecific competition and spatio-temporal niche separation. We made use of a recent colonisation of Ural Owls (Strix uralensis) in southern Poland to compare habitat preferences of Tawny Owls (Strix aluco) allopatry and sympatry with Ural Owls. We investigated spatial niche segregation of Ural Owl and the Tawny Owl in sympatry and compared habitat preferences of Tawny Owls breeding in allopatry and sympatry. Tawny Owls breeding in sympatry with Ural Owls occupied forests with higher canopy compactness, sites located closer to forest border and to built-up areas, as well as stands with a higher share of fir and spruce and a lower share of beech as compared to sites occupied by Ural Owls. Allopatric Tawny Owls occupied sites with lower canopy compactness and bred at sites located further from forest borders and in stands with lower share of fir and spruce and a higher share of deciduous as compared to sympatric Tawny Owls. As Ural owls are dominant in relation to Tawny Owls, this indicates that the presence of Ural Owls prevents Tawny Owls from occupying deciduous-dominated and old stands located in forest interior areas, far from buildings and forest edges. The results support habitat displacement between the two species when breeding in sympatry. We also show that protection of large forest patches is crucial for the Ural Owl, a species still rare in central Europe, while small patches are occupied by the abundant Tawny Owl. Article in Journal/Newspaper Strix uralensis Ural Owl Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
institution |
Open Polar |
collection |
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
op_collection_id |
ftslunivuppsala |
language |
Swedish English |
topic |
Ecology |
spellingShingle |
Ecology Kajtoch, Łukasz Zmihorski, Michal Wieczorek, Paweł Habitat displacement effect between two competing owl species in fragmented forests |
topic_facet |
Ecology |
description |
Many owl species use the same nesting and food resources, which causes strong interspecific competition and spatio-temporal niche separation. We made use of a recent colonisation of Ural Owls (Strix uralensis) in southern Poland to compare habitat preferences of Tawny Owls (Strix aluco) allopatry and sympatry with Ural Owls. We investigated spatial niche segregation of Ural Owl and the Tawny Owl in sympatry and compared habitat preferences of Tawny Owls breeding in allopatry and sympatry. Tawny Owls breeding in sympatry with Ural Owls occupied forests with higher canopy compactness, sites located closer to forest border and to built-up areas, as well as stands with a higher share of fir and spruce and a lower share of beech as compared to sites occupied by Ural Owls. Allopatric Tawny Owls occupied sites with lower canopy compactness and bred at sites located further from forest borders and in stands with lower share of fir and spruce and a higher share of deciduous as compared to sympatric Tawny Owls. As Ural owls are dominant in relation to Tawny Owls, this indicates that the presence of Ural Owls prevents Tawny Owls from occupying deciduous-dominated and old stands located in forest interior areas, far from buildings and forest edges. The results support habitat displacement between the two species when breeding in sympatry. We also show that protection of large forest patches is crucial for the Ural Owl, a species still rare in central Europe, while small patches are occupied by the abundant Tawny Owl. |
format |
Article in Journal/Newspaper |
author |
Kajtoch, Łukasz Zmihorski, Michal Wieczorek, Paweł |
author_facet |
Kajtoch, Łukasz Zmihorski, Michal Wieczorek, Paweł |
author_sort |
Kajtoch, Łukasz |
title |
Habitat displacement effect between two competing owl species in fragmented forests |
title_short |
Habitat displacement effect between two competing owl species in fragmented forests |
title_full |
Habitat displacement effect between two competing owl species in fragmented forests |
title_fullStr |
Habitat displacement effect between two competing owl species in fragmented forests |
title_full_unstemmed |
Habitat displacement effect between two competing owl species in fragmented forests |
title_sort |
habitat displacement effect between two competing owl species in fragmented forests |
publishDate |
2015 |
url |
https://pub.epsilon.slu.se/13079/ https://pub.epsilon.slu.se/13079/1/kajtoch_et_al_160307.pdf |
genre |
Strix uralensis Ural Owl |
genre_facet |
Strix uralensis Ural Owl |
op_relation |
https://pub.epsilon.slu.se/13079/1/kajtoch_et_al_160307.pdf Kajtoch, Łukasz and Zmihorski, Michal and Wieczorek, Paweł (2015). Habitat displacement effect between two competing owl species in fragmented forests. Population ecology. 57 :3 , 517-527 [Research article] |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766209697620164608 |