Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories
We used a combination of faecal pellet analysis and feeding enclosure trials to determine the diets of collared lemmings (Dicrostonyx kilangmiutak) and tundra voles (Microtus oeconomus) at Pearce Point, Northwest Territories, and we looked for evidence of exploitative competition between the two spe...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1993
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Online Access: | http://dx.doi.org/10.1139/z93-241 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-241 |
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crcansciencepubl:10.1139/z93-241 2024-09-15T18:26:33+00:00 Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories Bergman, Carita M. Krebs, Charles J. 1993 http://dx.doi.org/10.1139/z93-241 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-241 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 71, issue 9, page 1703-1709 ISSN 0008-4301 1480-3283 journal-article 1993 crcansciencepubl https://doi.org/10.1139/z93-241 2024-08-08T04:13:41Z We used a combination of faecal pellet analysis and feeding enclosure trials to determine the diets of collared lemmings (Dicrostonyx kilangmiutak) and tundra voles (Microtus oeconomus) at Pearce Point, Northwest Territories, and we looked for evidence of exploitative competition between the two species. Voles preferred monocotyledons (Carex and Eriophorum spp.) and lemmings preferred Dryas integrifolia. We found that there was little overlap in the natural diets of the two species, but that overlap was increased experimentally when both species were forced to forage in the same habitats. However, food preferences generally did not change. The diet of collared lemmings at Pearce Point was similar to that found in all other studies except those done in Alaska, where Dryas is uncommon. We conclude that exploitative competition for food is unlikely to be an important factor in interspecific relations between collared lemmings and tundra voles. Article in Journal/Newspaper Northwest Territories Tundra Alaska Canadian Science Publishing Canadian Journal of Zoology 71 9 1703 1709 |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
We used a combination of faecal pellet analysis and feeding enclosure trials to determine the diets of collared lemmings (Dicrostonyx kilangmiutak) and tundra voles (Microtus oeconomus) at Pearce Point, Northwest Territories, and we looked for evidence of exploitative competition between the two species. Voles preferred monocotyledons (Carex and Eriophorum spp.) and lemmings preferred Dryas integrifolia. We found that there was little overlap in the natural diets of the two species, but that overlap was increased experimentally when both species were forced to forage in the same habitats. However, food preferences generally did not change. The diet of collared lemmings at Pearce Point was similar to that found in all other studies except those done in Alaska, where Dryas is uncommon. We conclude that exploitative competition for food is unlikely to be an important factor in interspecific relations between collared lemmings and tundra voles. |
format |
Article in Journal/Newspaper |
author |
Bergman, Carita M. Krebs, Charles J. |
spellingShingle |
Bergman, Carita M. Krebs, Charles J. Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories |
author_facet |
Bergman, Carita M. Krebs, Charles J. |
author_sort |
Bergman, Carita M. |
title |
Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories |
title_short |
Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories |
title_full |
Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories |
title_fullStr |
Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories |
title_full_unstemmed |
Diet overlap of collared lemmings and tundra voles at Pearce Point, Northwest Territories |
title_sort |
diet overlap of collared lemmings and tundra voles at pearce point, northwest territories |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/z93-241 http://www.nrcresearchpress.com/doi/pdf/10.1139/z93-241 |
genre |
Northwest Territories Tundra Alaska |
genre_facet |
Northwest Territories Tundra Alaska |
op_source |
Canadian Journal of Zoology volume 71, issue 9, page 1703-1709 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z93-241 |
container_title |
Canadian Journal of Zoology |
container_volume |
71 |
container_issue |
9 |
container_start_page |
1703 |
op_container_end_page |
1709 |
_version_ |
1810467040547307520 |