Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use
Abstract Background Range expansion of species, a major consequence of climate changes, may alter communities substantially due to competition between expanding and native species. Methods We first quantified size differences between an expanding habitat generalist, the red fox (Vulpes vulpes), and...
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ftdoajarticles:oai:doaj.org/article:59c1404c132f4adfa5706deeada71214 2023-11-12T04:11:25+01:00 Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use Chloé Warret Rodrigues James D. Roth 2023-10-01T00:00:00Z https://doi.org/10.1186/s40462-023-00421-1 https://doaj.org/article/59c1404c132f4adfa5706deeada71214 EN eng BMC https://doi.org/10.1186/s40462-023-00421-1 https://doaj.org/toc/2051-3933 doi:10.1186/s40462-023-00421-1 2051-3933 https://doaj.org/article/59c1404c132f4adfa5706deeada71214 Movement Ecology, Vol 11, Iss 1, Pp 1-15 (2023) Arctic tundra Exploitation competition Interference Intraguild interactions Range expansion Species coexistence Biology (General) QH301-705.5 article 2023 ftdoajarticles https://doi.org/10.1186/s40462-023-00421-1 2023-10-15T00:39:36Z Abstract Background Range expansion of species, a major consequence of climate changes, may alter communities substantially due to competition between expanding and native species. Methods We first quantified size differences between an expanding habitat generalist, the red fox (Vulpes vulpes), and a circumpolar habitat specialist, the Arctic foxes (Vulpes lagopus), at the edge of the Arctic, where climate-related changes occur rapidly, to predict the likelihood of the larger competitor escalating interference to intraguild killing. We then used satellite telemetry to evaluate competition in a heterogeneous landscape by examining space use early during the foxes' reproductive period, when resource scarcity, increased-food requirements and spatial constraints likely exacerbate the potential for interference. We used time-LoCoH to quantify space and habitat use, and Minta's index to quantify spatio-temporal interactions between neighbors. Results Our morphometric comparison involving 236 foxes found that the potential for escalated interference between these species was high due to intermediate size difference. However, our results from 17 collared foxes suggested that expanding and native competitors may coexist when expanding species occur at low densities. Low home-range overlap between neighbors suggested territoriality and substantial exploitation competition for space. No obvious differential use of areas shared by heterospecific neighbors suggested low interference. If anything, intraspecific competition between red foxes may be stronger than interspecific competition. Red and Arctic foxes used habitat differentially, with near-exclusive use of forest patches by red foxes and marine habitats by Arctic foxes. Conclusion Heterogeneous landscapes may relax interspecific competition between expanding and native species, allowing exclusive use of some resources. Furthermore, the scarcity of habitats favored by expanding species may emphasize intraspecific competition between newcomers over interspecific ... Article in Journal/Newspaper Arctic Tundra Vulpes lagopus Directory of Open Access Journals: DOAJ Articles Arctic Movement Ecology 11 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic tundra Exploitation competition Interference Intraguild interactions Range expansion Species coexistence Biology (General) QH301-705.5 |
spellingShingle |
Arctic tundra Exploitation competition Interference Intraguild interactions Range expansion Species coexistence Biology (General) QH301-705.5 Chloé Warret Rodrigues James D. Roth Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use |
topic_facet |
Arctic tundra Exploitation competition Interference Intraguild interactions Range expansion Species coexistence Biology (General) QH301-705.5 |
description |
Abstract Background Range expansion of species, a major consequence of climate changes, may alter communities substantially due to competition between expanding and native species. Methods We first quantified size differences between an expanding habitat generalist, the red fox (Vulpes vulpes), and a circumpolar habitat specialist, the Arctic foxes (Vulpes lagopus), at the edge of the Arctic, where climate-related changes occur rapidly, to predict the likelihood of the larger competitor escalating interference to intraguild killing. We then used satellite telemetry to evaluate competition in a heterogeneous landscape by examining space use early during the foxes' reproductive period, when resource scarcity, increased-food requirements and spatial constraints likely exacerbate the potential for interference. We used time-LoCoH to quantify space and habitat use, and Minta's index to quantify spatio-temporal interactions between neighbors. Results Our morphometric comparison involving 236 foxes found that the potential for escalated interference between these species was high due to intermediate size difference. However, our results from 17 collared foxes suggested that expanding and native competitors may coexist when expanding species occur at low densities. Low home-range overlap between neighbors suggested territoriality and substantial exploitation competition for space. No obvious differential use of areas shared by heterospecific neighbors suggested low interference. If anything, intraspecific competition between red foxes may be stronger than interspecific competition. Red and Arctic foxes used habitat differentially, with near-exclusive use of forest patches by red foxes and marine habitats by Arctic foxes. Conclusion Heterogeneous landscapes may relax interspecific competition between expanding and native species, allowing exclusive use of some resources. Furthermore, the scarcity of habitats favored by expanding species may emphasize intraspecific competition between newcomers over interspecific ... |
format |
Article in Journal/Newspaper |
author |
Chloé Warret Rodrigues James D. Roth |
author_facet |
Chloé Warret Rodrigues James D. Roth |
author_sort |
Chloé Warret Rodrigues |
title |
Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use |
title_short |
Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use |
title_full |
Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use |
title_fullStr |
Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use |
title_full_unstemmed |
Coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use |
title_sort |
coexistence of two sympatric predators in a transitional ecosystem under constraining environmental conditions: a perspective from space and habitat use |
publisher |
BMC |
publishDate |
2023 |
url |
https://doi.org/10.1186/s40462-023-00421-1 https://doaj.org/article/59c1404c132f4adfa5706deeada71214 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra Vulpes lagopus |
genre_facet |
Arctic Tundra Vulpes lagopus |
op_source |
Movement Ecology, Vol 11, Iss 1, Pp 1-15 (2023) |
op_relation |
https://doi.org/10.1186/s40462-023-00421-1 https://doaj.org/toc/2051-3933 doi:10.1186/s40462-023-00421-1 2051-3933 https://doaj.org/article/59c1404c132f4adfa5706deeada71214 |
op_doi |
https://doi.org/10.1186/s40462-023-00421-1 |
container_title |
Movement Ecology |
container_volume |
11 |
container_issue |
1 |
_version_ |
1782330535625883648 |