Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods
Snow may prevent Arctic herbivores from accessing their forage in winter, forcing them to aggregate in the few patches with limited snow. In High Arctic Greenland, Arctic hare and rock ptarmigan often forage in muskox feeding craters. We therefore hypothesized that due to limited availability of for...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:104500 2023-07-02T03:30:57+02:00 Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods Schmidt, Niels M. Mosbacher, Jesper B. Vesterinen, Eero J. Roslin, Tomas Michelsen, Anders 2018-05-14T12:29:53.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-yg-xnnc https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:104500 unknown doi:10.5061/dryad.48t6710/1 doi:10.5061/dryad.48t6710/2 doi:10.5061/dryad.48t6710/3 doi:10.1007/s00442-018-4147-x http://nbn-resolving.org/urn:nbn:nl:ui:13-yg-xnnc doi:10.5061/dryad.48t6710 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:104500 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2018 ftdans https://doi.org/10.5061/dryad.48t6710/110.5061/dryad.48t6710/210.5061/dryad.48t6710/310.1007/s00442-018-4147-x10.5061/dryad.48t6710 2023-06-13T13:29:53Z Snow may prevent Arctic herbivores from accessing their forage in winter, forcing them to aggregate in the few patches with limited snow. In High Arctic Greenland, Arctic hare and rock ptarmigan often forage in muskox feeding craters. We therefore hypothesized that due to limited availability of forage, the dietary niches of these resident herbivores overlap considerably, and that the overlap increases as winter progresses. To test this, we analyzed fecal samples collected in early and late winter. We used molecular analysis to identify the plant taxa consumed, and stable isotope ratios of carbon and nitrogen to quantify the dietary niche breadth and dietary overlap. The plant taxa found indicated only limited dietary differentiation between the herbivores. As expected, dietary niches exhibited a strong contraction from early to late winter, especially for rock ptarmigan. This may indicate increasing reliance on particular plant resources as winter progresses. In early winter, the diet of rock ptarmigan overlapped slightly with that of muskox and Arctic hare. Contrary to our expectations, no inter-specific dietary niche overlap was observed in late winter. This overall pattern was specifically revealed by combined analysis of molecular data and stable isotope contents. Hence, despite foraging in the same areas and generally feeding on the same plant taxa, the quantitative dietary overlap between the three herbivores was limited. This may be attributable to species-specific consumption rates of plant taxa. Yet, Arctic hare and rock ptarmigan may benefit from muskox opening up the snow pack, thereby allowing them to access the plants. Other/Unknown Material Arctic hare Arctic Greenland muskox rock ptarmigan Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic Greenland |
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Open Polar |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Schmidt, Niels M. Mosbacher, Jesper B. Vesterinen, Eero J. Roslin, Tomas Michelsen, Anders Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods |
topic_facet |
Life sciences medicine and health care |
description |
Snow may prevent Arctic herbivores from accessing their forage in winter, forcing them to aggregate in the few patches with limited snow. In High Arctic Greenland, Arctic hare and rock ptarmigan often forage in muskox feeding craters. We therefore hypothesized that due to limited availability of forage, the dietary niches of these resident herbivores overlap considerably, and that the overlap increases as winter progresses. To test this, we analyzed fecal samples collected in early and late winter. We used molecular analysis to identify the plant taxa consumed, and stable isotope ratios of carbon and nitrogen to quantify the dietary niche breadth and dietary overlap. The plant taxa found indicated only limited dietary differentiation between the herbivores. As expected, dietary niches exhibited a strong contraction from early to late winter, especially for rock ptarmigan. This may indicate increasing reliance on particular plant resources as winter progresses. In early winter, the diet of rock ptarmigan overlapped slightly with that of muskox and Arctic hare. Contrary to our expectations, no inter-specific dietary niche overlap was observed in late winter. This overall pattern was specifically revealed by combined analysis of molecular data and stable isotope contents. Hence, despite foraging in the same areas and generally feeding on the same plant taxa, the quantitative dietary overlap between the three herbivores was limited. This may be attributable to species-specific consumption rates of plant taxa. Yet, Arctic hare and rock ptarmigan may benefit from muskox opening up the snow pack, thereby allowing them to access the plants. |
author |
Schmidt, Niels M. Mosbacher, Jesper B. Vesterinen, Eero J. Roslin, Tomas Michelsen, Anders |
author_facet |
Schmidt, Niels M. Mosbacher, Jesper B. Vesterinen, Eero J. Roslin, Tomas Michelsen, Anders |
author_sort |
Schmidt, Niels M. |
title |
Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods |
title_short |
Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods |
title_full |
Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods |
title_fullStr |
Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods |
title_full_unstemmed |
Data from: Limited dietary overlap amongst resident Arctic herbivores in winter - complementary insights from complementary methods |
title_sort |
data from: limited dietary overlap amongst resident arctic herbivores in winter - complementary insights from complementary methods |
publishDate |
2018 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-yg-xnnc https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:104500 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic hare Arctic Greenland muskox rock ptarmigan |
genre_facet |
Arctic hare Arctic Greenland muskox rock ptarmigan |
op_relation |
doi:10.5061/dryad.48t6710/1 doi:10.5061/dryad.48t6710/2 doi:10.5061/dryad.48t6710/3 doi:10.1007/s00442-018-4147-x http://nbn-resolving.org/urn:nbn:nl:ui:13-yg-xnnc doi:10.5061/dryad.48t6710 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:104500 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.48t6710/110.5061/dryad.48t6710/210.5061/dryad.48t6710/310.1007/s00442-018-4147-x10.5061/dryad.48t6710 |
_version_ |
1770275214644477952 |