The importance of s patial scale in habitat selection by European beaver

Adrian Zwolicki , Rafał Pudełko , Katarzyna Moskal , Joanna Świderska , Szymon Saath , Agata Weydmann

Abstract

We evaluated habitat selection by European beaver Castor fiber L. across a spatial gradient from local (within the family territory) to a broad, ecoregional scale. Based on aerial photography, we assessed the habitat composition of 150 beaver territories along the main water bodies of the Vistula River delta (northern Poland) and compared these data with 183 randomly selected sites not occupied by the species. The beavers preferred habitats with high availability of woody plants, including shrubs, and avoided anthropogenically modified habitats, such as arable lands. Within a single family territory, we observed decreasing woody plant cover with increasing distance from a colony centre, which suggests that beaver habitat preferences depend on the assessment of both the abundance and spatial distribution of preferred habitat elements. We tested the importance of spatial scale in beaver habitat selection with principal coordinates of neighbour matrices analysis, which showed that the geographical scale explained 46.7% of the variation in habitat composition, while the local beaver density explained only 10.3% of this variability. We found two main spatial gradients that were related to the broad spatial scale: first, the most important gradient was related to the largest distances between beaver sites and was independent of woody plant cover and the local beaver site density. The second most important gradient appeared more locally and was associated with these variables. Our results indicate that European beaver habitat selection was affected by different scale‐related phenomena related 1) to central place foraging behaviour, which resulted in the clumped distribution of woody plants within the territory, and 2) local population density and woody plant cover. Finally, 3) habitat selection occurs independently across the largest spatial scale studied (e.g. between watersheds), which was probably due to the limited natal dispersal range of the animals.
Publication typeIn press (online first, early view)
Author Adrian Zwolicki (FB / DVEZ)
Adrian Zwolicki,,
- Department of Vertebrate Ecology and Zoology
, Rafał Pudełko
Rafał Pudełko,,
-
, Katarzyna Moskal (FOG)
Katarzyna Moskal,,
- Faculty of Oceanography and Geography
, Joanna Świderska (FB / DMoB)
Joanna Świderska,,
- Department of Molecular Biology
, Szymon Saath (FOG)
Szymon Saath ,,
- Faculty of Oceanography and Geography
, Agata Weydmann (FOG / IO / DMPR)
Agata Weydmann,,
- Division of Marine Plankton Research
Journal seriesEcography, ISSN 0906-7590, (A 40 pkt)
Issue year2018
Pages1-30
Publication size in sheets1.45
Keywords in EnglishCastor fiber, spatial habitat structure, spatially dependent habitat selection
DOIDOI:10.1111/ecog.03621
URL https://doi.org/10.1111/ecog.03621
Languageen angielski
LicenseJournal (articles only); published final; Other open licence; with publication
Score (nominal)45
ScoreMinisterial score = 40.0, 18-11-2018, ArticleFromJournal
Ministerial score (2013-2016) = 45.0, 18-11-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.902 (2) - 2016=5.366 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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