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DOI:	10.1371/journal.pone.0113746
论文题名:	Projected Polar Bear Sea Ice Habitat in the Canadian Arctic Archipelago
作者:	Stephen G. Hamilton; Laura Castro de la Guardia; Andrew E. Derocher; Vicki Sahanatien; Bruno Tremblay; David Huard
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-11-26
卷:	9, 期:11
语种:	英语
英文关键词:	Sea ice ; Bears ; Seasons ; Climate change ; Conservation science ; Predation ; Simulation and modeling ; Habitats
英文摘要:	Background Sea ice across the Arctic is declining and altering physical characteristics of marine ecosystems. Polar bears (Ursus maritimus) have been identified as vulnerable to changes in sea ice conditions. We use sea ice projections for the Canadian Arctic Archipelago from 2006 – 2100 to gain insight into the conservation challenges for polar bears with respect to habitat loss using metrics developed from polar bear energetics modeling. Principal Findings Shifts away from multiyear ice to annual ice cover throughout the region, as well as lengthening ice-free periods, may become critical for polar bears before the end of the 21st century with projected warming. Each polar bear population in the Archipelago may undergo 2–5 months of ice-free conditions, where no such conditions exist presently. We identify spatially and temporally explicit ice-free periods that extend beyond what polar bears require for nutritional and reproductive demands. Conclusions/Significance Under business-as-usual climate projections, polar bears may face starvation and reproductive failure across the entire Archipelago by the year 2100.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0113746&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/17960
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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File Name/ File Size	Content Type	Version	Access	License
journal.pone.0113746.PDF（4621KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9 Canada;Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9 Canada;Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB, T6G 2E9 Canada;Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9 Canada;Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E9 Canada;World Wildlife Fund Canada, PO Box 1750, Iqaluit, NU, X0A 0H0 Canada;Atmospheric and Oceanic Sciences, McGill University, Room 823, Burnside Hall 805 Sherbrooke Street West, Montreal, QC H3A 0B9 Canada;David Huard Solutions, Québec, G1W 4G8 Canada

Recommended Citation:

Stephen G. Hamilton,Laura Castro de la Guardia,Andrew E. Derocher,et al. Projected Polar Bear Sea Ice Habitat in the Canadian Arctic Archipelago[J]. PLOS ONE,2014-01-01,9(11)

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