干旱区生态环境知识资源中心(Arid): Grounded icebergs as maternity denning habitat for polar bears (Ursus maritimus) in North and Northeast Greenland

Arid

DOI	10.1007/s00300-020-02695-2
	Grounded icebergs as maternity denning habitat for polar bears (Ursus maritimus) in North and Northeast Greenland
	Laidre, Kristin L.1; Stirling, Ian 2,3
通讯作者	Laidre, Kristin L.
来源期刊	POLAR BIOLOGY
ISSN	0722-4060
EISSN	1432-2056
出版年	2020
卷号	43 期号:7 页码:937-943
英文摘要	This study provides the first documentation of polar bear (Ursus maritimus) maternity denning in snowdrifts around icebergs frozen into the fast ice or grounded on the seafloor. Based on six den observations in north and northeast Greenland during spring surveys in 2018 and 2019 (109 flight hours), together with observations of 20 adult females with 35 cubs of the year (COYs) in adjacent sea ice, we hypothesize that the use of snowdrifts around icebergs for maternity denning is an established behavior in the region and not a random event. Factors influencing maternity denning in snowdrifts around icebergs may include limited suitable drifts on the nearby terrestrial polar desert due to low precipitation, the presence of suitable wind-blown snow banks regardless of the direction of autumn storm winds, cold and stable habitat throughout the winter denning period, and access to ringed seal (Pusa hispida) pupping habitat in the nearby Northeast Water polynya. This type of maternity denning habitat is only available in glaciated regions of the Arctic where marine-terminating glaciers deposit melange large enough to become grounded offshore and remain in place for months or years. This habitat may become less stable or disappear with long-term climate warming.
英文关键词	Fast ice Glacier Greenland Iceberg Maternity den Polar bear Ursus maritimus
类型	Article
语种	英语
国家	USA ; Canada
收录类别	SCI-E
WOS记录号	WOS:000540942400001
WOS关键词	SEA-ICE ; PREDATION ; MOVEMENTS ; BIRTH ; CUBS
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319735
作者单位	1.Univ Washington, Appl Phys Lab, Polar Sci Ctr, Seattle, WA 98105 USA; 2.Univ Alberta, Dept Biol Sci, Edmonton, AB TGH 2E9, Canada; 3.Univ Alberta, Dept Biol Sci, Environm & Climate Change Canada, Wildlife Res Div, Edmonton, AB TGH 2E9, Canada
推荐引用方式 GB/T 7714	Laidre, Kristin L.,Stirling, Ian. Grounded icebergs as maternity denning habitat for polar bears (Ursus maritimus) in North and Northeast Greenland[J],2020,43(7):937-943.
APA	Laidre, Kristin L.,&Stirling, Ian.(2020).Grounded icebergs as maternity denning habitat for polar bears (Ursus maritimus) in North and Northeast Greenland.POLAR BIOLOGY,43(7),937-943.
MLA	Laidre, Kristin L.,et al."Grounded icebergs as maternity denning habitat for polar bears (Ursus maritimus) in North and Northeast Greenland".POLAR BIOLOGY 43.7(2020):937-943.