The late winter diets of barren-ground caribou in North-Central Canada
Rumen samples from 104 barren-ground caribou (Rangifer tarandus groenlandicus) collected in March 1980 and 1981 at 18 sites on the winter range in south-central Northwest Territories (NWT) and northern Saskatchewan were examined microscopically for relative occurrence of plant fragments. The composi...
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Language: | English |
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Septentrio Academic Publishing
1986
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/663 2023-05-15T17:46:32+02:00 The late winter diets of barren-ground caribou in North-Central Canada Thomas, Donald C. Hervieux, David P. 1986-06-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/663 https://doi.org/10.7557/2.6.2.663 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/663/630 https://septentrio.uit.no/index.php/rangifer/article/view/663 doi:10.7557/2.6.2.663 Copyright (c) 2015 Donald C. Thomas, David P. Hervieux http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Vol 6 (1986): Special Issue No. 1; 305-310 1890-6729 caribou winter diets Northwest Territories Rangifer rumen samples barren ground caribou info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1986 ftunitroemsoe https://doi.org/10.7557/2.6.2.663 2021-08-16T14:33:37Z Rumen samples from 104 barren-ground caribou (Rangifer tarandus groenlandicus) collected in March 1980 and 1981 at 18 sites on the winter range in south-central Northwest Territories (NWT) and northern Saskatchewan were examined microscopically for relative occurrence of plant fragments. The composition of plant fragments in the rumens of calves did not differ from that in older caribou. Samples were homogeneous within sites and among them. Therefore we analyzed composite samples for each site and then pooled the data. Terricolous fruticose and foliose lichens averaged 68.5 ± 1.5% (SE) ot tallied fragments at all 18 sites, followed by conifer needles (11.9 ± 1.2%), green leaves of Vactinium spp., Ledum spp., and other shrubs and iorbs (5.6 ± 0.6%), twigs and bark (5.5 ± 0.4%), bryophytes (4.9 ± 0.6%) and 3.6% unidentified. The lichen component consisted of 8.4 ± 1.5% Stereocaulon spp., 46.9 ± 2.6% other fruticose lichens (largely Cladina spp., Cladonia spp., and Cetraria spp.), and 13.2 ± 1.5% foliose lichens (largely Peltigera spp.). A comparison of rumen contents with the average relative abundance of plants found in feeding craters at 13 sites suggests that use of plant species was not always proportionate to their occurrence. Article in Journal/Newspaper Northwest Territories Rangifer Rangifer tarandus University of Tromsø: Septentrio Academic Publishing Canada Northwest Territories Rangifer 6 2 305 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
caribou winter diets Northwest Territories Rangifer rumen samples barren ground caribou |
spellingShingle |
caribou winter diets Northwest Territories Rangifer rumen samples barren ground caribou Thomas, Donald C. Hervieux, David P. The late winter diets of barren-ground caribou in North-Central Canada |
topic_facet |
caribou winter diets Northwest Territories Rangifer rumen samples barren ground caribou |
description |
Rumen samples from 104 barren-ground caribou (Rangifer tarandus groenlandicus) collected in March 1980 and 1981 at 18 sites on the winter range in south-central Northwest Territories (NWT) and northern Saskatchewan were examined microscopically for relative occurrence of plant fragments. The composition of plant fragments in the rumens of calves did not differ from that in older caribou. Samples were homogeneous within sites and among them. Therefore we analyzed composite samples for each site and then pooled the data. Terricolous fruticose and foliose lichens averaged 68.5 ± 1.5% (SE) ot tallied fragments at all 18 sites, followed by conifer needles (11.9 ± 1.2%), green leaves of Vactinium spp., Ledum spp., and other shrubs and iorbs (5.6 ± 0.6%), twigs and bark (5.5 ± 0.4%), bryophytes (4.9 ± 0.6%) and 3.6% unidentified. The lichen component consisted of 8.4 ± 1.5% Stereocaulon spp., 46.9 ± 2.6% other fruticose lichens (largely Cladina spp., Cladonia spp., and Cetraria spp.), and 13.2 ± 1.5% foliose lichens (largely Peltigera spp.). A comparison of rumen contents with the average relative abundance of plants found in feeding craters at 13 sites suggests that use of plant species was not always proportionate to their occurrence. |
format |
Article in Journal/Newspaper |
author |
Thomas, Donald C. Hervieux, David P. |
author_facet |
Thomas, Donald C. Hervieux, David P. |
author_sort |
Thomas, Donald C. |
title |
The late winter diets of barren-ground caribou in North-Central Canada |
title_short |
The late winter diets of barren-ground caribou in North-Central Canada |
title_full |
The late winter diets of barren-ground caribou in North-Central Canada |
title_fullStr |
The late winter diets of barren-ground caribou in North-Central Canada |
title_full_unstemmed |
The late winter diets of barren-ground caribou in North-Central Canada |
title_sort |
late winter diets of barren-ground caribou in north-central canada |
publisher |
Septentrio Academic Publishing |
publishDate |
1986 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/663 https://doi.org/10.7557/2.6.2.663 |
geographic |
Canada Northwest Territories |
geographic_facet |
Canada Northwest Territories |
genre |
Northwest Territories Rangifer Rangifer tarandus |
genre_facet |
Northwest Territories Rangifer Rangifer tarandus |
op_source |
Rangifer; Vol 6 (1986): Special Issue No. 1; 305-310 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/663/630 https://septentrio.uit.no/index.php/rangifer/article/view/663 doi:10.7557/2.6.2.663 |
op_rights |
Copyright (c) 2015 Donald C. Thomas, David P. Hervieux http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.6.2.663 |
container_title |
Rangifer |
container_volume |
6 |
container_issue |
2 |
container_start_page |
305 |
_version_ |
1766150250579361792 |