Case history of the Fortymile Caribou Herd, 1920-1990
Early this century, the Fortymile caribou herd was the largest in Alaska and one of the largest in the world. Since the 1940s the herd has remained relatively small, fluctuating between 6000-8000 and about 50 000. To determine possible limiting factors, we reviewed historical fluctuations in herd si...
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/1128 2023-05-15T18:03:55+02:00 Case history of the Fortymile Caribou Herd, 1920-1990 Valkenburg, Patrick Kelleyhouse, David G. Davis, James L. Ver Hoef, Jay M. 1994-12-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/1128 https://doi.org/10.7557/2.14.1.1128 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1128/1071 https://septentrio.uit.no/index.php/rangifer/article/view/1128 doi:10.7557/2.14.1.1128 Copyright (c) 2015 Patrick Valkenburg, David G. Kelleyhouse, James L. Davis, Jay M. Ver Hoef http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Årg 14 Nr 1 (1994); 11-22,46-47 Rangifer; Vol 14 No 1 (1994); 11-22,46-47 1890-6729 caribou Fortymile caribou herd population dynamics weather wolves info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1994 ftunitroemsoe https://doi.org/10.7557/2.14.1.1128 2021-08-16T14:50:25Z Early this century, the Fortymile caribou herd was the largest in Alaska and one of the largest in the world. Since the 1940s the herd has remained relatively small, fluctuating between 6000-8000 and about 50 000. To determine possible limiting factors, we reviewed historical fluctuations in herd since and harvest, historical data on wolf numbers and summer and winter weather. The major decline in herd size from 1963 to 1973 was accompanied by high wolf numbers, some years of unfavorable winter and summer weather, and some years of high harvests. From 1974 to 1990 the Fortymile herd failed to recover as well as the adjacent Nelchi-na herd and provided less than one-fourth the harvest despite favorable winter conditions in both areas. Two notable differences between these herds were that (1) wolves were less strongly limited within the range of the Fortymile herd, and (2) moose as alternate prey for wolves remained more abundant within the range of the Nelchina herd. Article in Journal/Newspaper Rangifer Alaska University of Tromsø: Septentrio Academic Publishing Rangifer 14 1 11 |
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Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
caribou Fortymile caribou herd population dynamics weather wolves |
spellingShingle |
caribou Fortymile caribou herd population dynamics weather wolves Valkenburg, Patrick Kelleyhouse, David G. Davis, James L. Ver Hoef, Jay M. Case history of the Fortymile Caribou Herd, 1920-1990 |
topic_facet |
caribou Fortymile caribou herd population dynamics weather wolves |
description |
Early this century, the Fortymile caribou herd was the largest in Alaska and one of the largest in the world. Since the 1940s the herd has remained relatively small, fluctuating between 6000-8000 and about 50 000. To determine possible limiting factors, we reviewed historical fluctuations in herd since and harvest, historical data on wolf numbers and summer and winter weather. The major decline in herd size from 1963 to 1973 was accompanied by high wolf numbers, some years of unfavorable winter and summer weather, and some years of high harvests. From 1974 to 1990 the Fortymile herd failed to recover as well as the adjacent Nelchi-na herd and provided less than one-fourth the harvest despite favorable winter conditions in both areas. Two notable differences between these herds were that (1) wolves were less strongly limited within the range of the Fortymile herd, and (2) moose as alternate prey for wolves remained more abundant within the range of the Nelchina herd. |
format |
Article in Journal/Newspaper |
author |
Valkenburg, Patrick Kelleyhouse, David G. Davis, James L. Ver Hoef, Jay M. |
author_facet |
Valkenburg, Patrick Kelleyhouse, David G. Davis, James L. Ver Hoef, Jay M. |
author_sort |
Valkenburg, Patrick |
title |
Case history of the Fortymile Caribou Herd, 1920-1990 |
title_short |
Case history of the Fortymile Caribou Herd, 1920-1990 |
title_full |
Case history of the Fortymile Caribou Herd, 1920-1990 |
title_fullStr |
Case history of the Fortymile Caribou Herd, 1920-1990 |
title_full_unstemmed |
Case history of the Fortymile Caribou Herd, 1920-1990 |
title_sort |
case history of the fortymile caribou herd, 1920-1990 |
publisher |
Septentrio Academic Publishing |
publishDate |
1994 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/1128 https://doi.org/10.7557/2.14.1.1128 |
genre |
Rangifer Alaska |
genre_facet |
Rangifer Alaska |
op_source |
Rangifer; Årg 14 Nr 1 (1994); 11-22,46-47 Rangifer; Vol 14 No 1 (1994); 11-22,46-47 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1128/1071 https://septentrio.uit.no/index.php/rangifer/article/view/1128 doi:10.7557/2.14.1.1128 |
op_rights |
Copyright (c) 2015 Patrick Valkenburg, David G. Kelleyhouse, James L. Davis, Jay M. Ver Hoef http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.14.1.1128 |
container_title |
Rangifer |
container_volume |
14 |
container_issue |
1 |
container_start_page |
11 |
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1766175030211772416 |