Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra
Abstract Climate change can impact ecosystems by reshaping the dynamics of resource exploitation for predators and their prey. Alterations of these pathways could be especially intense in ecosystems characterized by a simple trophic structure and rapid warming trends, such as in the Arctic. However,...
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crwiley:10.1111/1365-2656.13104 2024-09-30T14:28:31+00:00 Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra Juhasz, Claire‐Cécile Shipley, Bill Gauthier, Gilles Berteaux, Dominique Lecomte, Nicolas Koons, Dave Canada Research Chairs Canada Foundation for Innovation Université de Moncton Natural Sciences and Engineering Research Council of Canada 2019 http://dx.doi.org/10.1111/1365-2656.13104 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13104 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2656.13104 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13104 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 89, issue 3, page 704-715 ISSN 0021-8790 1365-2656 journal-article 2019 crwiley https://doi.org/10.1111/1365-2656.13104 2024-09-05T05:08:27Z Abstract Climate change can impact ecosystems by reshaping the dynamics of resource exploitation for predators and their prey. Alterations of these pathways could be especially intense in ecosystems characterized by a simple trophic structure and rapid warming trends, such as in the Arctic. However, quantifying the multiple direct and indirect pathways through which climate change is likely to alter trophic interactions and their relative strength remains a challenge. Here, we aim to identify direct and indirect causal mechanisms driven by climate affecting predator–prey interactions of species sharing a tundra food web. We based our study on relationships between one Arctic predator (Arctic fox) and its two main prey – lemmings (preferred prey) and snow geese (alternate prey) – which are exposed to variable local and regional climatic factors across years. We used a combination of models mapping multiple causal links among key variables derived from a long‐term dataset (21 years). We obtained several possible scenarios linking regional climate factors (Arctic oscillations) and local temperature and precipitation to the breeding of species. Our results suggest that both regional and local climate factors have direct and indirect impacts on the breeding of foxes and geese. Local climate showed a positive causal link with goose nesting success, while both regional and local climate displayed contrasted effects on the proportion of fox breeding. We found no impact of climate on lemming abundance. We observed positive relationships between lemming, fox and goose reproduction highlighting numerical and functional responses of fox to the variability of lemming abundance. Our study measures causal links and strength of interactions in a food web, quantifying both numerical response of a predator and apparent interactions between its two main prey. These results improve our understanding of the complex effects of climate on predator–prey interactions and our capacity to anticipate food web response to ongoing climate ... Article in Journal/Newspaper Arctic Fox Arctic Climate change Tundra Wiley Online Library Arctic Journal of Animal Ecology 89 3 704 715 |
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Wiley Online Library |
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English |
description |
Abstract Climate change can impact ecosystems by reshaping the dynamics of resource exploitation for predators and their prey. Alterations of these pathways could be especially intense in ecosystems characterized by a simple trophic structure and rapid warming trends, such as in the Arctic. However, quantifying the multiple direct and indirect pathways through which climate change is likely to alter trophic interactions and their relative strength remains a challenge. Here, we aim to identify direct and indirect causal mechanisms driven by climate affecting predator–prey interactions of species sharing a tundra food web. We based our study on relationships between one Arctic predator (Arctic fox) and its two main prey – lemmings (preferred prey) and snow geese (alternate prey) – which are exposed to variable local and regional climatic factors across years. We used a combination of models mapping multiple causal links among key variables derived from a long‐term dataset (21 years). We obtained several possible scenarios linking regional climate factors (Arctic oscillations) and local temperature and precipitation to the breeding of species. Our results suggest that both regional and local climate factors have direct and indirect impacts on the breeding of foxes and geese. Local climate showed a positive causal link with goose nesting success, while both regional and local climate displayed contrasted effects on the proportion of fox breeding. We found no impact of climate on lemming abundance. We observed positive relationships between lemming, fox and goose reproduction highlighting numerical and functional responses of fox to the variability of lemming abundance. Our study measures causal links and strength of interactions in a food web, quantifying both numerical response of a predator and apparent interactions between its two main prey. These results improve our understanding of the complex effects of climate on predator–prey interactions and our capacity to anticipate food web response to ongoing climate ... |
author2 |
Koons, Dave Canada Research Chairs Canada Foundation for Innovation Université de Moncton Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Juhasz, Claire‐Cécile Shipley, Bill Gauthier, Gilles Berteaux, Dominique Lecomte, Nicolas |
spellingShingle |
Juhasz, Claire‐Cécile Shipley, Bill Gauthier, Gilles Berteaux, Dominique Lecomte, Nicolas Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra |
author_facet |
Juhasz, Claire‐Cécile Shipley, Bill Gauthier, Gilles Berteaux, Dominique Lecomte, Nicolas |
author_sort |
Juhasz, Claire‐Cécile |
title |
Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra |
title_short |
Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra |
title_full |
Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra |
title_fullStr |
Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra |
title_full_unstemmed |
Direct and indirect effects of regional and local climatic factors on trophic interactions in the Arctic tundra |
title_sort |
direct and indirect effects of regional and local climatic factors on trophic interactions in the arctic tundra |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/1365-2656.13104 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13104 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2656.13104 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13104 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Fox Arctic Climate change Tundra |
genre_facet |
Arctic Fox Arctic Climate change Tundra |
op_source |
Journal of Animal Ecology volume 89, issue 3, page 704-715 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1365-2656.13104 |
container_title |
Journal of Animal Ecology |
container_volume |
89 |
container_issue |
3 |
container_start_page |
704 |
op_container_end_page |
715 |
_version_ |
1811634154242048000 |