Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska

Polar bears (Ursus maritimus) give birth during mid-winter in dens of ice and snow. Denning polar bears subjected to human disturbances may abandon dens before their altricial young can survive the rigors of the Arctic winter. Because the Arctic coastal plain of Alaska is an area of high petroleum p...

Full description

Bibliographic Details
Published in:ARCTIC
Main Authors: Durner, George M., Amstrup, Steven C., Ambrosius, Ken J.
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 2009
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/63423
_version_ 1835009129433792512
author Durner, George M.
Amstrup, Steven C.
Ambrosius, Ken J.
author_facet Durner, George M.
Amstrup, Steven C.
Ambrosius, Ken J.
author_sort Durner, George M.
collection Unknown
container_issue 1
container_title ARCTIC
container_volume 59
description Polar bears (Ursus maritimus) give birth during mid-winter in dens of ice and snow. Denning polar bears subjected to human disturbances may abandon dens before their altricial young can survive the rigors of the Arctic winter. Because the Arctic coastal plain of Alaska is an area of high petroleum potential and contains existing and planned oil field developments, the distribution of polar bear dens on the plain is of interest to land managers. Therefore, as part of a study of denning habitats along the entire Arctic coast of Alaska, we examined high-resolution aerial photographs (n = 1655) of the 7994 km2 coastal plain included in the Arctic National Wildlife Refuge (ANWR) and mapped 3621 km of bank habitat suitable for denning by polar bears. Such habitats were distributed uniformly and comprised 0.29% (23.2 km2) of the coastal plain between the Canning River and the Canadian border. Ground-truth sampling suggested that we had correctly identified 91.5% of bank denning habitats on the ANWR coastal plain. Knowledge of the distribution of these habitats will help facilitate informed management of human activities and minimize disruption of polar bears in maternal dens. Les ours polaires (Ursus maritimus) mettent bas au beau milieu de l’hiver dans des tanières de glace et de neige. Les ours polaires des tanières qui sont la cible de dérangements occasionnés par l’être humain peuvent abandonner leur tanière avant que leurs petits ne soient prêts à survivre les rigueurs de l’hiver de l’Arctique. Puisque la plaine côtière arctique de l’Alaska renferme de grandes possibilités sur le plan pétrolier et comprend des champs pétrolifères mis en valeur ou dont la mise en valeur est planifiée, la répartition des tanières d’ours polaires sur la plaine revêt de l’intérêt chez les gestionnaires des terres. Par conséquent, dans le cadre d’une étude portant sur les habitats des tanières tout le long de la côte arctique de l’Alaska, on a examiné des photographies aériennes de haute résolution (n = 1655) portant sur une ...
format Article in Journal/Newspaper
genre Arctic
Arctic
Arctique*
ours polaire
Ursus maritimus
Alaska
genre_facet Arctic
Arctic
Arctique*
ours polaire
Ursus maritimus
Alaska
geographic Arctic
geographic_facet Arctic
id ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/63423
institution Open Polar
language English
op_collection_id ftunivcalgaryojs
op_relation https://journalhosting.ucalgary.ca/index.php/arctic/article/view/63423/47360
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/63423
op_source ARCTIC; Vol. 59 No. 1 (2006): March: 1–113; 31-36
1923-1245
0004-0843
publishDate 2009
publisher The Arctic Institute of North America
record_format openpolar
spelling ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/63423 2025-06-15T14:14:54+00:00 Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska Durner, George M. Amstrup, Steven C. Ambrosius, Ken J. 2009-12-18 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/63423 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/63423/47360 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/63423 ARCTIC; Vol. 59 No. 1 (2006): March: 1–113; 31-36 1923-1245 0004-0843 aerial photography Arctic National Wildlife Refuge (ANWR) den habitat maternal den photo interpretation polar bear Ursus maritimus photographie aérienne Réserve faunique nationale de l’Arctique habitat des tanières parturition interprétation de photo ours polaire info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 2009 ftunivcalgaryojs 2025-05-27T03:29:43Z Polar bears (Ursus maritimus) give birth during mid-winter in dens of ice and snow. Denning polar bears subjected to human disturbances may abandon dens before their altricial young can survive the rigors of the Arctic winter. Because the Arctic coastal plain of Alaska is an area of high petroleum potential and contains existing and planned oil field developments, the distribution of polar bear dens on the plain is of interest to land managers. Therefore, as part of a study of denning habitats along the entire Arctic coast of Alaska, we examined high-resolution aerial photographs (n = 1655) of the 7994 km2 coastal plain included in the Arctic National Wildlife Refuge (ANWR) and mapped 3621 km of bank habitat suitable for denning by polar bears. Such habitats were distributed uniformly and comprised 0.29% (23.2 km2) of the coastal plain between the Canning River and the Canadian border. Ground-truth sampling suggested that we had correctly identified 91.5% of bank denning habitats on the ANWR coastal plain. Knowledge of the distribution of these habitats will help facilitate informed management of human activities and minimize disruption of polar bears in maternal dens. Les ours polaires (Ursus maritimus) mettent bas au beau milieu de l’hiver dans des tanières de glace et de neige. Les ours polaires des tanières qui sont la cible de dérangements occasionnés par l’être humain peuvent abandonner leur tanière avant que leurs petits ne soient prêts à survivre les rigueurs de l’hiver de l’Arctique. Puisque la plaine côtière arctique de l’Alaska renferme de grandes possibilités sur le plan pétrolier et comprend des champs pétrolifères mis en valeur ou dont la mise en valeur est planifiée, la répartition des tanières d’ours polaires sur la plaine revêt de l’intérêt chez les gestionnaires des terres. Par conséquent, dans le cadre d’une étude portant sur les habitats des tanières tout le long de la côte arctique de l’Alaska, on a examiné des photographies aériennes de haute résolution (n = 1655) portant sur une ... Article in Journal/Newspaper Arctic Arctic Arctique* ours polaire Ursus maritimus Alaska Unknown Arctic ARCTIC 59 1
spellingShingle aerial photography
Arctic National Wildlife Refuge (ANWR)
den habitat
maternal den
photo interpretation
polar bear
Ursus maritimus
photographie aérienne
Réserve faunique nationale de l’Arctique
habitat des tanières
parturition
interprétation de photo
ours polaire
Durner, George M.
Amstrup, Steven C.
Ambrosius, Ken J.
Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska
title Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska
title_full Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska
title_fullStr Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska
title_full_unstemmed Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska
title_short Polar Bear Maternal Den Habitat in the Arctic National Wildlife Refuge, Alaska
title_sort polar bear maternal den habitat in the arctic national wildlife refuge, alaska
topic aerial photography
Arctic National Wildlife Refuge (ANWR)
den habitat
maternal den
photo interpretation
polar bear
Ursus maritimus
photographie aérienne
Réserve faunique nationale de l’Arctique
habitat des tanières
parturition
interprétation de photo
ours polaire
topic_facet aerial photography
Arctic National Wildlife Refuge (ANWR)
den habitat
maternal den
photo interpretation
polar bear
Ursus maritimus
photographie aérienne
Réserve faunique nationale de l’Arctique
habitat des tanières
parturition
interprétation de photo
ours polaire
url https://journalhosting.ucalgary.ca/index.php/arctic/article/view/63423