气候变化领域集成服务门户(CCPortal): A demographic survey of the Davis Strait polar bear subpopulation using physical and genetic capture-recapture-recovery sampling

CCPortal

DOI	10.1111/mms.13107
	A demographic survey of the Davis Strait polar bear subpopulation using physical and genetic capture-recapture-recovery sampling
	Dunham, Kylee D.; Dyck, Markus G.; Ware, Jasmine V.; Derocher, Andrew E.; Regehr, Eric V.; Stern, Harry L.; Stenson, Garry B.; Koons, David N.
发表日期	2024
ISSN	0824-0469
EISSN	1748-7692
英文摘要	Conducting assessments to understand the effects of changing environmental conditions on polar bear (Ursus maritimus) demography has become increasingly important to inform management and conservation. Here, we combined physical (2005-2007) and genetic (2017-2018) mark-recapture with harvest recovery data (2005-2018) to estimate demographic rates of the Davis Strait polar bear subpopulation and examine the possible effects of climate, dynamic ice habitat, and prey resources on survival. Large sample sizes (e.g., 2,513 marked animals) allowed us to estimate temporal variation in annual survival rates using multistate mark-recapture-recovery models. We did not detect statistically significant effects of climate, ice habitat, and prey during the 13-year study. Estimated total abundance in 2006 was 2,190, credible interval (CRI) [1,954, 2,454] and 1,944, CRI [1,593, 2,366] in 2018. Geometric mean population growth rate (0.99, 95% CRI [0.97, 1.01]) indicated the subpopulation may have declined slightly between 2006 and 2018. However, we did not detect a declining trend in survival or substantial change in reproductive metrics over this period. Given forecasts of major environmental change we emphasize the need to review monitoring programs for this subpopulation.
英文关键词	Davis Strait; genetic mark-recapture-recovery; polar bear; survival; temporal random effects; temporal variation; Ursus maritimus
语种	英语
WOS研究方向	Marine & Freshwater Biology ; Zoology
WOS类目	Marine & Freshwater Biology ; Zoology
WOS记录号	WOS:001162019000001
来源期刊	MARINE MAMMAL SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297079
作者单位	University of Alberta; University of Washington; University of Washington Seattle; Fisheries & Oceans Canada; Colorado State University; Cornell University
推荐引用方式 GB/T 7714	Dunham, Kylee D.,Dyck, Markus G.,Ware, Jasmine V.,et al. A demographic survey of the Davis Strait polar bear subpopulation using physical and genetic capture-recapture-recovery sampling[J],2024.
APA	Dunham, Kylee D..,Dyck, Markus G..,Ware, Jasmine V..,Derocher, Andrew E..,Regehr, Eric V..,...&Koons, David N..(2024).A demographic survey of the Davis Strait polar bear subpopulation using physical and genetic capture-recapture-recovery sampling.MARINE MAMMAL SCIENCE.
MLA	Dunham, Kylee D.,et al."A demographic survey of the Davis Strait polar bear subpopulation using physical and genetic capture-recapture-recovery sampling".MARINE MAMMAL SCIENCE (2024).