Long‐Term Range Recession and the Persistence of Caribou in the Taiga
Abstract: Spatial patterns can help in understanding the decline and future prospects of threatened species, but the dynamics of range retraction have not been applied to these fundamental questions. I analyzed long‐term changes in occupancy by taiga‐dwelling caribou ( Rangifer tarandus caribou ) to...
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Online Access: | http://dx.doi.org/10.1046/j.1523-1739.2003.02288.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1523-1739.2003.02288.x http://onlinelibrary.wiley.com/wol1/doi/10.1046/j.1523-1739.2003.02288.x/fullpdf |
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crwiley:10.1046/j.1523-1739.2003.02288.x 2024-06-02T08:13:38+00:00 Long‐Term Range Recession and the Persistence of Caribou in the Taiga Schaefer, James A. 2003 http://dx.doi.org/10.1046/j.1523-1739.2003.02288.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1523-1739.2003.02288.x http://onlinelibrary.wiley.com/wol1/doi/10.1046/j.1523-1739.2003.02288.x/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Conservation Biology volume 17, issue 5, page 1435-1439 ISSN 0888-8892 1523-1739 journal-article 2003 crwiley https://doi.org/10.1046/j.1523-1739.2003.02288.x 2024-05-03T11:21:10Z Abstract: Spatial patterns can help in understanding the decline and future prospects of threatened species, but the dynamics of range retraction have not been applied to these fundamental questions. I analyzed long‐term changes in occupancy by taiga‐dwelling caribou ( Rangifer tarandus caribou ) to estimate their rate of disappearance and time to extirpation in Ontario, Canada. Patterns of range recession, 1880–1990, indicated that half of historic woodland caribou range has been lost, a rate of disappearance of 34,800 km 2 per decade, and a northward range recession of 34 km per decade. The mean metapopulation density, the abundance of discrete winter groups, was one group per 1,900 km 2 , suggesting an average loss of 18 caribou wintering areas per decade during this period. There was a strong coincidence between the recent southern limits of caribou occupancy and the northern front of forest harvesting, implying an anthropogenic agent of decline. The estimated time to extirpation of forest‐dwelling caribou in Ontario, inferred from the sustained rate of disappearance, was 91 years ( 95% confidence interval: 57–149 years ). The persistence of woodland caribou may depend on spatial separation from human incursion. Article in Journal/Newspaper Rangifer tarandus taiga Wiley Online Library Canada Caribou Range ENVELOPE(-125.436,-125.436,59.750,59.750) Conservation Biology 17 5 1435 1439 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract: Spatial patterns can help in understanding the decline and future prospects of threatened species, but the dynamics of range retraction have not been applied to these fundamental questions. I analyzed long‐term changes in occupancy by taiga‐dwelling caribou ( Rangifer tarandus caribou ) to estimate their rate of disappearance and time to extirpation in Ontario, Canada. Patterns of range recession, 1880–1990, indicated that half of historic woodland caribou range has been lost, a rate of disappearance of 34,800 km 2 per decade, and a northward range recession of 34 km per decade. The mean metapopulation density, the abundance of discrete winter groups, was one group per 1,900 km 2 , suggesting an average loss of 18 caribou wintering areas per decade during this period. There was a strong coincidence between the recent southern limits of caribou occupancy and the northern front of forest harvesting, implying an anthropogenic agent of decline. The estimated time to extirpation of forest‐dwelling caribou in Ontario, inferred from the sustained rate of disappearance, was 91 years ( 95% confidence interval: 57–149 years ). The persistence of woodland caribou may depend on spatial separation from human incursion. |
format |
Article in Journal/Newspaper |
author |
Schaefer, James A. |
spellingShingle |
Schaefer, James A. Long‐Term Range Recession and the Persistence of Caribou in the Taiga |
author_facet |
Schaefer, James A. |
author_sort |
Schaefer, James A. |
title |
Long‐Term Range Recession and the Persistence of Caribou in the Taiga |
title_short |
Long‐Term Range Recession and the Persistence of Caribou in the Taiga |
title_full |
Long‐Term Range Recession and the Persistence of Caribou in the Taiga |
title_fullStr |
Long‐Term Range Recession and the Persistence of Caribou in the Taiga |
title_full_unstemmed |
Long‐Term Range Recession and the Persistence of Caribou in the Taiga |
title_sort |
long‐term range recession and the persistence of caribou in the taiga |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1046/j.1523-1739.2003.02288.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1523-1739.2003.02288.x http://onlinelibrary.wiley.com/wol1/doi/10.1046/j.1523-1739.2003.02288.x/fullpdf |
long_lat |
ENVELOPE(-125.436,-125.436,59.750,59.750) |
geographic |
Canada Caribou Range |
geographic_facet |
Canada Caribou Range |
genre |
Rangifer tarandus taiga |
genre_facet |
Rangifer tarandus taiga |
op_source |
Conservation Biology volume 17, issue 5, page 1435-1439 ISSN 0888-8892 1523-1739 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1523-1739.2003.02288.x |
container_title |
Conservation Biology |
container_volume |
17 |
container_issue |
5 |
container_start_page |
1435 |
op_container_end_page |
1439 |
_version_ |
1800737202853904384 |