Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.

Despite the consensus among ecologists and conservationists of the importance of maintaining scavenger feeding patterns based primarily on natural prey sources, human-mediated feeding remains a widely used management tool for threatened wildlife. Thus, it is important to understand the key factors f...

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Autores: Margalida, Antoni, Moreno-Opo, Rubén, Trujillano, Ana
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/48901
Acesso em linha:https://doi.org/10.1890/ES15-00009.1
http://hdl.handle.net/10459.1/48901
Access Level:acceso abierto
Palavra-chave:Aegypius monachus
Carcasses
environmental factors
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spelling Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.Margalida, AntoniMoreno-Opo, RubénTrujillano, AnaAegypius monachusCarcassesenvironmental factorsDespite the consensus among ecologists and conservationists of the importance of maintaining scavenger feeding patterns based primarily on natural prey sources, human-mediated feeding remains a widely used management tool for threatened wildlife. Thus, it is important to understand the key factors favoring certain species and age-groups at supplementary feeding sites. Through a detailed videomonitored experiment of carrion inputs at different locations in the Iberian Peninsula (home of .90% of European vultures), we assessed how variables related to weather, time, demography, management and alternative food availability influenced the occurrence patterns of different age-classes of vultures at feeding sites. The most threatened and less gregarious species (bearded vulture Gypaetus barbatus and Egyptian vulture Neophron percnopterus) attended to earlier inputs, thus reducing interspecific competition with the Eurasian griffon vulture Gyps fulvus. The bearded vulture was favored by a larger biomass supply at the feeding sites during the chick-rearing period, while the Egyptian vulture preferred frequent and abundant inputs. Non-adult cinereous vultures Aegypius monachus were favored at times of lower abundance of natural resources and in the densest networks of feeding sites, while adults preferentially attended sites with periodic inputs close to breeding colonies in areas with lower availability of other natural prey. Finally, the Eurasian griffon vulture showed a preference for continued and periodic inputs, and for feeding sites with numerous other feeding sites in the surroundings. Our results help to inform the management of supplementing food provision with the aim of enhancing its value to reverse the unfavorable conservation status of endangered species and to mitigate the negative effects of the current global threats impacting them.Ecological Society of America: Ecosphere2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://doi.org/10.1890/ES15-00009.1http://hdl.handle.net/10459.1/48901reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a https://doi.org/10.1890/ES15-00009.1Ecosphere, 2015, vol. 6(7), núm.127, p. 1-15cc-by (c) Moreno-Opo et al,. 2015info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/oai:recercat.cat:10459.1/489012026-05-29T05:05:01Z
dc.title.none.fl_str_mv Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
title Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
spellingShingle Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
Margalida, Antoni
Aegypius monachus
Carcasses
environmental factors
title_short Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
title_full Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
title_fullStr Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
title_full_unstemmed Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
title_sort Optimization of supplementary feeding programs for European vultures depends on environmental and management factors.
dc.creator.none.fl_str_mv Margalida, Antoni
Moreno-Opo, Rubén
Trujillano, Ana
author Margalida, Antoni
author_facet Margalida, Antoni
Moreno-Opo, Rubén
Trujillano, Ana
author_role author
author2 Moreno-Opo, Rubén
Trujillano, Ana
author2_role author
author
dc.subject.none.fl_str_mv Aegypius monachus
Carcasses
environmental factors
topic Aegypius monachus
Carcasses
environmental factors
description Despite the consensus among ecologists and conservationists of the importance of maintaining scavenger feeding patterns based primarily on natural prey sources, human-mediated feeding remains a widely used management tool for threatened wildlife. Thus, it is important to understand the key factors favoring certain species and age-groups at supplementary feeding sites. Through a detailed videomonitored experiment of carrion inputs at different locations in the Iberian Peninsula (home of .90% of European vultures), we assessed how variables related to weather, time, demography, management and alternative food availability influenced the occurrence patterns of different age-classes of vultures at feeding sites. The most threatened and less gregarious species (bearded vulture Gypaetus barbatus and Egyptian vulture Neophron percnopterus) attended to earlier inputs, thus reducing interspecific competition with the Eurasian griffon vulture Gyps fulvus. The bearded vulture was favored by a larger biomass supply at the feeding sites during the chick-rearing period, while the Egyptian vulture preferred frequent and abundant inputs. Non-adult cinereous vultures Aegypius monachus were favored at times of lower abundance of natural resources and in the densest networks of feeding sites, while adults preferentially attended sites with periodic inputs close to breeding colonies in areas with lower availability of other natural prey. Finally, the Eurasian griffon vulture showed a preference for continued and periodic inputs, and for feeding sites with numerous other feeding sites in the surroundings. Our results help to inform the management of supplementing food provision with the aim of enhancing its value to reverse the unfavorable conservation status of endangered species and to mitigate the negative effects of the current global threats impacting them.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1890/ES15-00009.1
http://hdl.handle.net/10459.1/48901
url https://doi.org/10.1890/ES15-00009.1
http://hdl.handle.net/10459.1/48901
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a https://doi.org/10.1890/ES15-00009.1
Ecosphere, 2015, vol. 6(7), núm.127, p. 1-15
dc.rights.none.fl_str_mv cc-by (c) Moreno-Opo et al,. 2015
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
rights_invalid_str_mv cc-by (c) Moreno-Opo et al,. 2015
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Ecological Society of America: Ecosphere
publisher.none.fl_str_mv Ecological Society of America: Ecosphere
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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