Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle
International audience Top predators may induce extensive cascading effects on lower trophic levels,for example, through intraguild predation (IGP). The impacts of both mamma-lian and avian top predators on species of the same class have been extensivelystudied, but the effects of the latter upon ma...
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Online Access: | https://hal.archives-ouvertes.fr/hal-01359473 https://doi.org/10.1002/ece3.1370 |
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ftccsdartic:oai:HAL:hal-01359473v1 2023-05-15T18:49:22+02:00 Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle Lyly, Marie S. Villers, Alexandre Koivisto, Elina Helle, Pekka Ollila, Tuomo Korpimäki, Erkki Section of Ecology University of Turku Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Finnish game and fisheries research institute (FINNISH GAME AND FISHERIES RESEARCH INSTITUTE) Finnish game and fisheries research institute Finnish Forest and Park Services Natural Heritage Services 2015 https://hal.archives-ouvertes.fr/hal-01359473 https://doi.org/10.1002/ece3.1370 en eng HAL CCSD Wiley Open Access info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.1370 hal-01359473 https://hal.archives-ouvertes.fr/hal-01359473 doi:10.1002/ece3.1370 ISSN: 2045-7758 Ecology and Evolution https://hal.archives-ouvertes.fr/hal-01359473 Ecology and Evolution, Wiley Open Access, 2015, 5, pp.503-514. ⟨10.1002/ece3.1370⟩ pine marten raptor red fox Intraguild predation mesopredator suppression trophic interactions [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.1002/ece3.1370 2021-10-24T10:01:48Z International audience Top predators may induce extensive cascading effects on lower trophic levels,for example, through intraguild predation (IGP). The impacts of both mamma-lian and avian top predators on species of the same class have been extensivelystudied, but the effects of the latter upon mammalian mesopredators are notyet as well known. We examined the impact of the predation risk imposed by alarge avian predator, the golden eagle (Aquila chrysaetos, L.), on its potentialmammalian mesopredator prey, the red fox (Vulpes vulpes, L.), and the pinemarten (Martes martes, L.). The study combined 23 years of countrywide datafrom nesting records of eagles and wildlife track counts of mesopredators inFinland, northern Europe. The predation risk of the golden eagle was modeledas a function of territory density, density of fledglings produced, and distanceto nearest active eagle territory, with the expectation that a high predation riskwould reduce the abundances of smaller sized pine martens in particular. Redfoxes appeared not to suffer from eagle predation, being in fact most numerousclose to eagle nests and in areas with more eagle territories. This is likely dueto similar prey preferences of the two predators and the larger size of foxesenabling them to escape eagle predation risk. Somewhat contrary to our predic-tion, the abundance of pine martens increased from low to intermediate terri-tory density and at close proximity to eagle nests, possibly because of similarhabitat preferences of martens and eagles. We found a slightly decreasing trendof marten abundance at high territory density, which could indicate that theresponse in marten populations is dependent on eagle density. However, moreresearch is needed to better establish whether mesopredators are intimidated orpredated by golden eagles, and whether such effects could in turn cascade tolower trophic levels, benefitting herbivorous species. Article in Journal/Newspaper Aquila chrysaetos golden eagle Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Ecology and Evolution 5 2 503 514 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
pine marten raptor red fox Intraguild predation mesopredator suppression trophic interactions [SDE]Environmental Sciences |
spellingShingle |
pine marten raptor red fox Intraguild predation mesopredator suppression trophic interactions [SDE]Environmental Sciences Lyly, Marie S. Villers, Alexandre Koivisto, Elina Helle, Pekka Ollila, Tuomo Korpimäki, Erkki Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle |
topic_facet |
pine marten raptor red fox Intraguild predation mesopredator suppression trophic interactions [SDE]Environmental Sciences |
description |
International audience Top predators may induce extensive cascading effects on lower trophic levels,for example, through intraguild predation (IGP). The impacts of both mamma-lian and avian top predators on species of the same class have been extensivelystudied, but the effects of the latter upon mammalian mesopredators are notyet as well known. We examined the impact of the predation risk imposed by alarge avian predator, the golden eagle (Aquila chrysaetos, L.), on its potentialmammalian mesopredator prey, the red fox (Vulpes vulpes, L.), and the pinemarten (Martes martes, L.). The study combined 23 years of countrywide datafrom nesting records of eagles and wildlife track counts of mesopredators inFinland, northern Europe. The predation risk of the golden eagle was modeledas a function of territory density, density of fledglings produced, and distanceto nearest active eagle territory, with the expectation that a high predation riskwould reduce the abundances of smaller sized pine martens in particular. Redfoxes appeared not to suffer from eagle predation, being in fact most numerousclose to eagle nests and in areas with more eagle territories. This is likely dueto similar prey preferences of the two predators and the larger size of foxesenabling them to escape eagle predation risk. Somewhat contrary to our predic-tion, the abundance of pine martens increased from low to intermediate terri-tory density and at close proximity to eagle nests, possibly because of similarhabitat preferences of martens and eagles. We found a slightly decreasing trendof marten abundance at high territory density, which could indicate that theresponse in marten populations is dependent on eagle density. However, moreresearch is needed to better establish whether mesopredators are intimidated orpredated by golden eagles, and whether such effects could in turn cascade tolower trophic levels, benefitting herbivorous species. |
author2 |
Section of Ecology University of Turku Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Finnish game and fisheries research institute (FINNISH GAME AND FISHERIES RESEARCH INSTITUTE) Finnish game and fisheries research institute Finnish Forest and Park Services Natural Heritage Services |
format |
Article in Journal/Newspaper |
author |
Lyly, Marie S. Villers, Alexandre Koivisto, Elina Helle, Pekka Ollila, Tuomo Korpimäki, Erkki |
author_facet |
Lyly, Marie S. Villers, Alexandre Koivisto, Elina Helle, Pekka Ollila, Tuomo Korpimäki, Erkki |
author_sort |
Lyly, Marie S. |
title |
Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle |
title_short |
Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle |
title_full |
Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle |
title_fullStr |
Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle |
title_full_unstemmed |
Avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle |
title_sort |
avian top predator and the landscape of fear: responses of mammalian mesopredators to risk imposed by the golden eagle |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.archives-ouvertes.fr/hal-01359473 https://doi.org/10.1002/ece3.1370 |
genre |
Aquila chrysaetos golden eagle |
genre_facet |
Aquila chrysaetos golden eagle |
op_source |
ISSN: 2045-7758 Ecology and Evolution https://hal.archives-ouvertes.fr/hal-01359473 Ecology and Evolution, Wiley Open Access, 2015, 5, pp.503-514. ⟨10.1002/ece3.1370⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.1370 hal-01359473 https://hal.archives-ouvertes.fr/hal-01359473 doi:10.1002/ece3.1370 |
op_doi |
https://doi.org/10.1002/ece3.1370 |
container_title |
Ecology and Evolution |
container_volume |
5 |
container_issue |
2 |
container_start_page |
503 |
op_container_end_page |
514 |
_version_ |
1766242970052329472 |