Brown bear den characteristics and selection in eastern Transylvania, Romania
International audience Dens are important for species that need to survive and reproduce during harsh winters. Brown bears (Ursus arctos) in Romania, listed by the European Union as a population of concern, use dens for several months each year. To date, few quantitative assessments of denning habit...
Published in: | Journal of Mammalogy |
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Online Access: | https://hal-amu.archives-ouvertes.fr/hal-03093764 https://hal-amu.archives-ouvertes.fr/hal-03093764/document https://hal-amu.archives-ouvertes.fr/hal-03093764/file/Faure%20et%20al%20Journal%20of%20Mammalogy%202020.pdf https://doi.org/10.1093/jmammal/gyaa047 |
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ftunivnantes:oai:HAL:hal-03093764v1 2023-05-15T18:42:07+02:00 Brown bear den characteristics and selection in eastern Transylvania, Romania Faure, Ulysse Domokos, Csaba Leriche, Agathe Cristescu, Bogdan Faculté des Sciences et Techniques de Saint Jérôme Milvus Group Bird and Nature Protection Association Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) University of Alberta Institute for Communities and Wildlife in Africa (iCWild), Department of Biological Sciences, University of Cape Town 2020-08-31 https://hal-amu.archives-ouvertes.fr/hal-03093764 https://hal-amu.archives-ouvertes.fr/hal-03093764/document https://hal-amu.archives-ouvertes.fr/hal-03093764/file/Faure%20et%20al%20Journal%20of%20Mammalogy%202020.pdf https://doi.org/10.1093/jmammal/gyaa047 en eng HAL CCSD American Society of Mammalogists info:eu-repo/semantics/altIdentifier/doi/10.1093/jmammal/gyaa047 hal-03093764 https://hal-amu.archives-ouvertes.fr/hal-03093764 https://hal-amu.archives-ouvertes.fr/hal-03093764/document https://hal-amu.archives-ouvertes.fr/hal-03093764/file/Faure%20et%20al%20Journal%20of%20Mammalogy%202020.pdf doi:10.1093/jmammal/gyaa047 info:eu-repo/semantics/OpenAccess ISSN: 0022-2372 EISSN: 1545-1542 Journal of Mammalogy https://hal-amu.archives-ouvertes.fr/hal-03093764 Journal of Mammalogy, American Society of Mammalogists, 2020, 101 (4), pp.1177-1188. ⟨10.1093/jmammal/gyaa047⟩ bear conservation disturbance ecology habitat ecology MaxEnt topography Ursidae [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1093/jmammal/gyaa047 2022-08-10T02:25:20Z International audience Dens are important for species that need to survive and reproduce during harsh winters. Brown bears (Ursus arctos) in Romania, listed by the European Union as a population of concern, use dens for several months each year. To date, few quantitative assessments of denning habitat have been carried out for this population or others in Europe. In 2008-2013 and 2015-2017, we used local knowledge and telemetry data from brown bears fitted with GPS collars to identify 115 winter dens and eight open ground nests used by bears in eastern Transylvania, Romania. We located most dens in mountainous areas (64%) and fewer in foothills (36%). Den entrances in mountainous areas were significantly narrower than entrances in foothills, likely due to the need for reduced thermal loss during more severe winters at higher elevations. We selected seven habitat characteristics (abiotic and biotic) and human-related covariates associated with known locations of dens and open nests to identify potential brown bear denning habitat using maximum entropy modeling. We found that terrain ruggedness was the single most important factor when predicting bear denning habitat. The habitat map derived from this study can be used in the future to safeguard bear denning areas from potential human disturbances. Article in Journal/Newspaper Ursus arctos Université de Nantes: HAL-UNIV-NANTES Journal of Mammalogy 101 4 1177 1188 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
bear conservation disturbance ecology habitat ecology MaxEnt topography Ursidae [SDE]Environmental Sciences |
spellingShingle |
bear conservation disturbance ecology habitat ecology MaxEnt topography Ursidae [SDE]Environmental Sciences Faure, Ulysse Domokos, Csaba Leriche, Agathe Cristescu, Bogdan Brown bear den characteristics and selection in eastern Transylvania, Romania |
topic_facet |
bear conservation disturbance ecology habitat ecology MaxEnt topography Ursidae [SDE]Environmental Sciences |
description |
International audience Dens are important for species that need to survive and reproduce during harsh winters. Brown bears (Ursus arctos) in Romania, listed by the European Union as a population of concern, use dens for several months each year. To date, few quantitative assessments of denning habitat have been carried out for this population or others in Europe. In 2008-2013 and 2015-2017, we used local knowledge and telemetry data from brown bears fitted with GPS collars to identify 115 winter dens and eight open ground nests used by bears in eastern Transylvania, Romania. We located most dens in mountainous areas (64%) and fewer in foothills (36%). Den entrances in mountainous areas were significantly narrower than entrances in foothills, likely due to the need for reduced thermal loss during more severe winters at higher elevations. We selected seven habitat characteristics (abiotic and biotic) and human-related covariates associated with known locations of dens and open nests to identify potential brown bear denning habitat using maximum entropy modeling. We found that terrain ruggedness was the single most important factor when predicting bear denning habitat. The habitat map derived from this study can be used in the future to safeguard bear denning areas from potential human disturbances. |
author2 |
Faculté des Sciences et Techniques de Saint Jérôme Milvus Group Bird and Nature Protection Association Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE) Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement IRD : UMR237-Centre National de la Recherche Scientifique (CNRS) University of Alberta Institute for Communities and Wildlife in Africa (iCWild), Department of Biological Sciences, University of Cape Town |
format |
Article in Journal/Newspaper |
author |
Faure, Ulysse Domokos, Csaba Leriche, Agathe Cristescu, Bogdan |
author_facet |
Faure, Ulysse Domokos, Csaba Leriche, Agathe Cristescu, Bogdan |
author_sort |
Faure, Ulysse |
title |
Brown bear den characteristics and selection in eastern Transylvania, Romania |
title_short |
Brown bear den characteristics and selection in eastern Transylvania, Romania |
title_full |
Brown bear den characteristics and selection in eastern Transylvania, Romania |
title_fullStr |
Brown bear den characteristics and selection in eastern Transylvania, Romania |
title_full_unstemmed |
Brown bear den characteristics and selection in eastern Transylvania, Romania |
title_sort |
brown bear den characteristics and selection in eastern transylvania, romania |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal-amu.archives-ouvertes.fr/hal-03093764 https://hal-amu.archives-ouvertes.fr/hal-03093764/document https://hal-amu.archives-ouvertes.fr/hal-03093764/file/Faure%20et%20al%20Journal%20of%20Mammalogy%202020.pdf https://doi.org/10.1093/jmammal/gyaa047 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
ISSN: 0022-2372 EISSN: 1545-1542 Journal of Mammalogy https://hal-amu.archives-ouvertes.fr/hal-03093764 Journal of Mammalogy, American Society of Mammalogists, 2020, 101 (4), pp.1177-1188. ⟨10.1093/jmammal/gyaa047⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/jmammal/gyaa047 hal-03093764 https://hal-amu.archives-ouvertes.fr/hal-03093764 https://hal-amu.archives-ouvertes.fr/hal-03093764/document https://hal-amu.archives-ouvertes.fr/hal-03093764/file/Faure%20et%20al%20Journal%20of%20Mammalogy%202020.pdf doi:10.1093/jmammal/gyaa047 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/jmammal/gyaa047 |
container_title |
Journal of Mammalogy |
container_volume |
101 |
container_issue |
4 |
container_start_page |
1177 |
op_container_end_page |
1188 |
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1766231722639228928 |