Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community
Indirect effects resulting from species sharing the same enemy can shape spatio‐temporal variations in species occurrence. The strength of such effects remains poorly known in natural communities composed of species from different trophic levels interacting in heterogeneous landscapes. Benefiting fr...
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Online Access: | http://dx.doi.org/10.1111/ecog.05760 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ecog.05760 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ecog.05760 |
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crwiley:10.1111/ecog.05760 2024-09-15T17:52:36+00:00 Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community Duchesne, Éliane Lamarre, Jean‐François Gauthier, Gilles Berteaux, Dominique Gravel, Dominique Bêty, Joël 2021 http://dx.doi.org/10.1111/ecog.05760 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ecog.05760 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ecog.05760 en eng Wiley http://creativecommons.org/licenses/by/3.0/ Ecography volume 44, issue 8, page 1236-1248 ISSN 0906-7590 1600-0587 journal-article 2021 crwiley https://doi.org/10.1111/ecog.05760 2024-08-22T04:16:19Z Indirect effects resulting from species sharing the same enemy can shape spatio‐temporal variations in species occurrence. The strength of such effects remains poorly known in natural communities composed of species from different trophic levels interacting in heterogeneous landscapes. Benefiting from a well‐known arctic vertebrate community and marked spatio‐temporal variations in the density of key prey species, we examined the effects of direct predator‐prey and indirect predator‐mediated effects on species occurrence in the landscape. We found both positive effects of one prey (lemmings), as well as negative indirect effects of another prey (colonial nesting snow geese) on the occurrence of species (ground‐nesting birds) belonging to different guilds and trophic levels but sharing a common predator (arctic fox). However, species using prey refuges available in the landscape were not or less affected by predator‐mediated effects. Similarly, the smallest (a passerine) and the largest and most dangerous species (an owl) for the shared predator were not affected by these effects. Our study provides one of the rare empirical evidence of predator‐mediated effects ascending the food web (i.e. negative indirect effect of an herbivore on avian predators) and underlines how habitat structure and species traits can modulate the strength of indirect effects in natural communities. Article in Journal/Newspaper Arctic Fox Wiley Online Library Ecography 44 8 1236 1248 |
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Wiley Online Library |
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language |
English |
description |
Indirect effects resulting from species sharing the same enemy can shape spatio‐temporal variations in species occurrence. The strength of such effects remains poorly known in natural communities composed of species from different trophic levels interacting in heterogeneous landscapes. Benefiting from a well‐known arctic vertebrate community and marked spatio‐temporal variations in the density of key prey species, we examined the effects of direct predator‐prey and indirect predator‐mediated effects on species occurrence in the landscape. We found both positive effects of one prey (lemmings), as well as negative indirect effects of another prey (colonial nesting snow geese) on the occurrence of species (ground‐nesting birds) belonging to different guilds and trophic levels but sharing a common predator (arctic fox). However, species using prey refuges available in the landscape were not or less affected by predator‐mediated effects. Similarly, the smallest (a passerine) and the largest and most dangerous species (an owl) for the shared predator were not affected by these effects. Our study provides one of the rare empirical evidence of predator‐mediated effects ascending the food web (i.e. negative indirect effect of an herbivore on avian predators) and underlines how habitat structure and species traits can modulate the strength of indirect effects in natural communities. |
format |
Article in Journal/Newspaper |
author |
Duchesne, Éliane Lamarre, Jean‐François Gauthier, Gilles Berteaux, Dominique Gravel, Dominique Bêty, Joël |
spellingShingle |
Duchesne, Éliane Lamarre, Jean‐François Gauthier, Gilles Berteaux, Dominique Gravel, Dominique Bêty, Joël Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community |
author_facet |
Duchesne, Éliane Lamarre, Jean‐François Gauthier, Gilles Berteaux, Dominique Gravel, Dominique Bêty, Joël |
author_sort |
Duchesne, Éliane |
title |
Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community |
title_short |
Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community |
title_full |
Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community |
title_fullStr |
Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community |
title_full_unstemmed |
Variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community |
title_sort |
variable strength of predator‐mediated effects on species occurrence in an arctic terrestrial vertebrate community |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/ecog.05760 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ecog.05760 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ecog.05760 |
genre |
Arctic Fox |
genre_facet |
Arctic Fox |
op_source |
Ecography volume 44, issue 8, page 1236-1248 ISSN 0906-7590 1600-0587 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1111/ecog.05760 |
container_title |
Ecography |
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44 |
container_issue |
8 |
container_start_page |
1236 |
op_container_end_page |
1248 |
_version_ |
1810294658211774464 |