Habitat selection and the scale of ghostly coexistence among Arctic rodents
Competition between coexisting species existing near their stable equilibrium can be obscured if they occupy separate habitats. Theories of habitat selection promise an ability to reveal the underlying ghost of competition by using isodars to infer the behavioural map of habitat selection. We tested...
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crwiley:10.1111/j.1600-0706.2010.18933.x 2023-12-03T10:16:30+01:00 Habitat selection and the scale of ghostly coexistence among Arctic rodents Ale, Som B. Morris, Douglas W. Dupuch, Angélique Moore, Debra E. 2011 http://dx.doi.org/10.1111/j.1600-0706.2010.18933.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0706.2010.18933.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0706.2010.18933.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Oikos volume 120, issue 8, page 1191-1200 ISSN 0030-1299 1600-0706 Ecology, Evolution, Behavior and Systematics journal-article 2011 crwiley https://doi.org/10.1111/j.1600-0706.2010.18933.x 2023-11-09T14:14:24Z Competition between coexisting species existing near their stable equilibrium can be obscured if they occupy separate habitats. Theories of habitat selection promise an ability to reveal the underlying ghost of competition by using isodars to infer the behavioural map of habitat selection. We tested the theory with two years of data on abundance and habitat preference by three Arctic rodent species living at low density along a gradient of wet to dry tundra on Herschel Island in Canada's western Arctic. Generalist brown lemmings exhibited a constant partial preference toward wet tundra whereas specialist collared lemmings and voles occupied the driest and wettest zones respectively. Although both lemming species compete for habitats elsewhere in the Canadian Arctic, isodar analyses suggest that the three species occupy wet and dry habitats independently of one another on Herschel Island. Competition at this large scale may be hidden at low densities, however, if the wet‐dry dichotomy is too coarse. Analyses at a finer subdivision of habitat revealed that these species coexist by using different microhabitats. Collared lemmings shifted their niche towards even drier habitat as the abundance of brown lemmings increased. We were thus able to reveal the ghost of competition lurking at large scales through a more refined analysis at smaller scales of density‐dependent habitat use. Article in Journal/Newspaper Arctic Herschel Island Tundra Wiley Online Library (via Crossref) Arctic Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Oikos 120 8 1191 1200 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics Ale, Som B. Morris, Douglas W. Dupuch, Angélique Moore, Debra E. Habitat selection and the scale of ghostly coexistence among Arctic rodents |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
Competition between coexisting species existing near their stable equilibrium can be obscured if they occupy separate habitats. Theories of habitat selection promise an ability to reveal the underlying ghost of competition by using isodars to infer the behavioural map of habitat selection. We tested the theory with two years of data on abundance and habitat preference by three Arctic rodent species living at low density along a gradient of wet to dry tundra on Herschel Island in Canada's western Arctic. Generalist brown lemmings exhibited a constant partial preference toward wet tundra whereas specialist collared lemmings and voles occupied the driest and wettest zones respectively. Although both lemming species compete for habitats elsewhere in the Canadian Arctic, isodar analyses suggest that the three species occupy wet and dry habitats independently of one another on Herschel Island. Competition at this large scale may be hidden at low densities, however, if the wet‐dry dichotomy is too coarse. Analyses at a finer subdivision of habitat revealed that these species coexist by using different microhabitats. Collared lemmings shifted their niche towards even drier habitat as the abundance of brown lemmings increased. We were thus able to reveal the ghost of competition lurking at large scales through a more refined analysis at smaller scales of density‐dependent habitat use. |
format |
Article in Journal/Newspaper |
author |
Ale, Som B. Morris, Douglas W. Dupuch, Angélique Moore, Debra E. |
author_facet |
Ale, Som B. Morris, Douglas W. Dupuch, Angélique Moore, Debra E. |
author_sort |
Ale, Som B. |
title |
Habitat selection and the scale of ghostly coexistence among Arctic rodents |
title_short |
Habitat selection and the scale of ghostly coexistence among Arctic rodents |
title_full |
Habitat selection and the scale of ghostly coexistence among Arctic rodents |
title_fullStr |
Habitat selection and the scale of ghostly coexistence among Arctic rodents |
title_full_unstemmed |
Habitat selection and the scale of ghostly coexistence among Arctic rodents |
title_sort |
habitat selection and the scale of ghostly coexistence among arctic rodents |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1111/j.1600-0706.2010.18933.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0706.2010.18933.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0706.2010.18933.x |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Herschel Island |
geographic_facet |
Arctic Herschel Island |
genre |
Arctic Herschel Island Tundra |
genre_facet |
Arctic Herschel Island Tundra |
op_source |
Oikos volume 120, issue 8, page 1191-1200 ISSN 0030-1299 1600-0706 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1600-0706.2010.18933.x |
container_title |
Oikos |
container_volume |
120 |
container_issue |
8 |
container_start_page |
1191 |
op_container_end_page |
1200 |
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1784263431771127808 |