Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective

Seasonal fidelity to relatively local areas and natural obstacles to movements allow the range of polar bears (Ursus maritimus) in Canada to be divided into 12 relatively distinct populations. These divisions are not the only ones possible, and may not be the best ones; however, they were consistent...

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Published in:ARCTIC
Main Authors: Taylor, Mitchell, Lee, John
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1995
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64291
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spelling ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/64291 2023-05-15T14:19:10+02:00 Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective Taylor, Mitchell Lee, John 1995-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64291 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64291/48226 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64291 ARCTIC; Vol. 48 No. 2 (1995): June: 109–206; 147-154 1923-1245 0004-0843 Animal distribution Animal population Animal tagging Polar bears Wildlife management Wildlife habitat Alaska Canadian Arctic Greenland North American Arctic info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1995 ftunivcalgaryojs 2022-03-22T21:21:32Z Seasonal fidelity to relatively local areas and natural obstacles to movements allow the range of polar bears (Ursus maritimus) in Canada to be divided into 12 relatively distinct populations. These divisions are not the only ones possible, and may not be the best ones; however, they were consistent with observed movements of marked bears. The average area of sea ice (mainly annual ice) that constitutes polar bear habitat for populations within and shared with Canada was estimated to total approximately 3.1 million sq km in April each year. The density estimates of polar bears ranged between 1.1 and 10.4 bears per 1000 sq km with a weighted mean of 4.1 bears per 1000 sq km. The sum of polar bear population estimates within or partially within Canada is approximately 12 700. However, the available data were insufficient to quantify the precision and accuracy of some population estimates.Key words: abundance, Arctic, bear, distribution, polar bear, population, Ursus maritimus La fidélité saisonnière des ours polaires (Ursus maritimus) à des régions suffisamment délimitées et des obstacles naturels à leurs déplacements permettent de diviser leur territoire au Canada en 12 populations relativement distinctes. Cette division n'est pas la seule possible et elle n'est peut-être pas la meilleure; elle cadre cependant avec les déplacements d'ours marqués que l'on a observés. On estime à environ 3,1 millions de km², en avril de chaque année, la superficie moyenne de la glace de mer (surtout de glace annuelle) qui constitue l'habitat de l'ours polaire pour les populations vivant à l'intérieur du Canada, ou communes à d'autres pays. L'estimation de la densité des ours polaires va de 1,1 à 10,4 ours par 1000 km², avec une moyenne pondérée de 4,1 ours par 1000 km². Le total des populations d'ours polaires dont le territoire est situé en tout ou en partie au Canada est estimé à environ 12 700 individus. Les données disponibles sont cependant insuffisantes pour quantifier la précision et l'exactitude de certaines estimations de population.Mots clés: abondance, Arctique, ours, distribution, ours polaire, population, Ursus maritimus Article in Journal/Newspaper Arctic Arctic Arctique* Greenland ours polaire polar bear Sea ice Ursus maritimus Alaska University of Calgary Journal Hosting Arctic Canada Greenland ARCTIC 48 2
institution Open Polar
collection University of Calgary Journal Hosting
op_collection_id ftunivcalgaryojs
language English
topic Animal distribution
Animal population
Animal tagging
Polar bears
Wildlife management
Wildlife habitat
Alaska
Canadian Arctic
Greenland
North American Arctic
spellingShingle Animal distribution
Animal population
Animal tagging
Polar bears
Wildlife management
Wildlife habitat
Alaska
Canadian Arctic
Greenland
North American Arctic
Taylor, Mitchell
Lee, John
Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective
topic_facet Animal distribution
Animal population
Animal tagging
Polar bears
Wildlife management
Wildlife habitat
Alaska
Canadian Arctic
Greenland
North American Arctic
description Seasonal fidelity to relatively local areas and natural obstacles to movements allow the range of polar bears (Ursus maritimus) in Canada to be divided into 12 relatively distinct populations. These divisions are not the only ones possible, and may not be the best ones; however, they were consistent with observed movements of marked bears. The average area of sea ice (mainly annual ice) that constitutes polar bear habitat for populations within and shared with Canada was estimated to total approximately 3.1 million sq km in April each year. The density estimates of polar bears ranged between 1.1 and 10.4 bears per 1000 sq km with a weighted mean of 4.1 bears per 1000 sq km. The sum of polar bear population estimates within or partially within Canada is approximately 12 700. However, the available data were insufficient to quantify the precision and accuracy of some population estimates.Key words: abundance, Arctic, bear, distribution, polar bear, population, Ursus maritimus La fidélité saisonnière des ours polaires (Ursus maritimus) à des régions suffisamment délimitées et des obstacles naturels à leurs déplacements permettent de diviser leur territoire au Canada en 12 populations relativement distinctes. Cette division n'est pas la seule possible et elle n'est peut-être pas la meilleure; elle cadre cependant avec les déplacements d'ours marqués que l'on a observés. On estime à environ 3,1 millions de km², en avril de chaque année, la superficie moyenne de la glace de mer (surtout de glace annuelle) qui constitue l'habitat de l'ours polaire pour les populations vivant à l'intérieur du Canada, ou communes à d'autres pays. L'estimation de la densité des ours polaires va de 1,1 à 10,4 ours par 1000 km², avec une moyenne pondérée de 4,1 ours par 1000 km². Le total des populations d'ours polaires dont le territoire est situé en tout ou en partie au Canada est estimé à environ 12 700 individus. Les données disponibles sont cependant insuffisantes pour quantifier la précision et l'exactitude de certaines estimations de population.Mots clés: abondance, Arctique, ours, distribution, ours polaire, population, Ursus maritimus
format Article in Journal/Newspaper
author Taylor, Mitchell
Lee, John
author_facet Taylor, Mitchell
Lee, John
author_sort Taylor, Mitchell
title Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective
title_short Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective
title_full Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective
title_fullStr Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective
title_full_unstemmed Distribution and Abundance of Canadian Polar Bear Populations: A Management Perspective
title_sort distribution and abundance of canadian polar bear populations: a management perspective
publisher The Arctic Institute of North America
publishDate 1995
url https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64291
geographic Arctic
Canada
Greenland
geographic_facet Arctic
Canada
Greenland
genre Arctic
Arctic
Arctique*
Greenland
ours polaire
polar bear
Sea ice
Ursus maritimus
Alaska
genre_facet Arctic
Arctic
Arctique*
Greenland
ours polaire
polar bear
Sea ice
Ursus maritimus
Alaska
op_source ARCTIC; Vol. 48 No. 2 (1995): June: 109–206; 147-154
1923-1245
0004-0843
op_relation https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64291/48226
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64291
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