Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic
Our working hypothesis was that winter mortality of Clethrionomys rutilus would be more severe in tundra than in taiga, and in winters with "unfavorable" rather than "favorable" conditions during establishment or ablation of the snow cover or in the subnivean environment during m...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1979
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Online Access: | http://dx.doi.org/10.1139/z79-278 http://www.nrcresearchpress.com/doi/pdf/10.1139/z79-278 |
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crcansciencepubl:10.1139/z79-278 2023-12-17T10:26:20+01:00 Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic Martell, A. M. Fuller, W. A. 1979 http://dx.doi.org/10.1139/z79-278 http://www.nrcresearchpress.com/doi/pdf/10.1139/z79-278 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 57, issue 11, page 2106-2120 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1979 crcansciencepubl https://doi.org/10.1139/z79-278 2023-11-19T13:39:03Z Our working hypothesis was that winter mortality of Clethrionomys rutilus would be more severe in tundra than in taiga, and in winters with "unfavorable" rather than "favorable" conditions during establishment or ablation of the snow cover or in the subnivean environment during midwinter. Vole mortality was higher in the tundra (90–95%) than in the taiga (55–75%), in accordance with our prediction, but year to year differences in snow conditions were not necessary determinants of winter survival during the 4 years of the study. Subnivean breeding was never detected. The onset of summer breeding was related to the time of snow melt, and a late spring was followed by a low rate of maturation of young-of-the-year females and small spring-to-fall increase in numbers. Few young of either sex matured in two of three summers in the taiga, whereas about half the females and one-third of the males matured each year on the tundra. Litters were significantly larger on the tundra and spring sex ratios were female biased. Thus reproductive output was high on the tundra, which would offset high winter losses. Intraspecific wounding was related to density and maturity except that on the tundra many immature young had bites. No superannual fluctuation was apparent on the tundra. Article in Journal/Newspaper Arctic taiga Tundra Canadian Science Publishing (via Crossref) Arctic Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Canadian Journal of Zoology 57 11 2106 2120 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Martell, A. M. Fuller, W. A. Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Our working hypothesis was that winter mortality of Clethrionomys rutilus would be more severe in tundra than in taiga, and in winters with "unfavorable" rather than "favorable" conditions during establishment or ablation of the snow cover or in the subnivean environment during midwinter. Vole mortality was higher in the tundra (90–95%) than in the taiga (55–75%), in accordance with our prediction, but year to year differences in snow conditions were not necessary determinants of winter survival during the 4 years of the study. Subnivean breeding was never detected. The onset of summer breeding was related to the time of snow melt, and a late spring was followed by a low rate of maturation of young-of-the-year females and small spring-to-fall increase in numbers. Few young of either sex matured in two of three summers in the taiga, whereas about half the females and one-third of the males matured each year on the tundra. Litters were significantly larger on the tundra and spring sex ratios were female biased. Thus reproductive output was high on the tundra, which would offset high winter losses. Intraspecific wounding was related to density and maturity except that on the tundra many immature young had bites. No superannual fluctuation was apparent on the tundra. |
format |
Article in Journal/Newspaper |
author |
Martell, A. M. Fuller, W. A. |
author_facet |
Martell, A. M. Fuller, W. A. |
author_sort |
Martell, A. M. |
title |
Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic |
title_short |
Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic |
title_full |
Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic |
title_fullStr |
Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic |
title_full_unstemmed |
Comparative demography of Clethrionomys rutilus in taiga and tundra in the low Arctic |
title_sort |
comparative demography of clethrionomys rutilus in taiga and tundra in the low arctic |
publisher |
Canadian Science Publishing |
publishDate |
1979 |
url |
http://dx.doi.org/10.1139/z79-278 http://www.nrcresearchpress.com/doi/pdf/10.1139/z79-278 |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Arctic Midwinter |
geographic_facet |
Arctic Midwinter |
genre |
Arctic taiga Tundra |
genre_facet |
Arctic taiga Tundra |
op_source |
Canadian Journal of Zoology volume 57, issue 11, page 2106-2120 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z79-278 |
container_title |
Canadian Journal of Zoology |
container_volume |
57 |
container_issue |
11 |
container_start_page |
2106 |
op_container_end_page |
2120 |
_version_ |
1785578053990088704 |