气候变化领域集成服务门户(CCPortal): Impact of past climate warming on genomic diversity and demographic history of collared lemmings across the Eurasian Arctic

CCPortal

DOI	10.1073/pnas.1913596117
	Impact of past climate warming on genomic diversity and demographic history of collared lemmings across the Eurasian Arctic
	Fedorov V.B.; Trucchi E.; Goropashnaya A.V.; Waltari E.; Whidden S.E.; Stenseth N.C.
发表日期	2020
ISSN	0027-8424
起始页码	3026
结束页码	3033
卷号	117 期号:6
英文摘要	The Arctic climate was warmer than today at the last interglacial and the Holocene thermal optimum. To reveal the impact of past climate-warming events on the demographic history of an Arctic specialist, we examined both mitochondrial and nuclear genomic variation in the collared lemming (Dicrostonyx torquatus, Pallas), a keystone species in tundra communities, across its entire distribution in northern Eurasia. The ancestral phylogenetic position of the West Beringian group and divergence time estimates support the hypothesis of continental range contraction to a single refugial area located in West Beringia during high-magnitude warming of the last interglacial, followed by westward recolonization of northern Eurasia in the last glacial period. The West Beringian group harbors the highest mitogenome diversity and its inferred demography indicates a constantly large effective population size over the Late Pleistocene to Holocene. This suggests that northward forest expansion during recent warming of the Holocene thermal optimum did not affect the gene pool of the collared lemming in West Beringia but reduced genomic diversity and effective population size in all other regions of the Eurasian Arctic. Demographic inference from genomic diversity was corroborated by species distribution modeling showing reduction in species distribution during past climate warming. These conclusions are supported by recent paleoecological evidence suggesting smaller temperature increases and moderate northward forest advances in the extreme northeast of Eurasia during the Late Pleistocene-to-Holocene warming events. This study emphasizes the importance of West Beringia as a potential refugium for cold-adapted Arctic species under ongoing climate warming. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Beringia; Climate warning; Holocene optimum; Interglacial; Mitogenome
语种	英语
scopus关键词	Arctic; article; climate warming; cold stress; demography; Dicrostonyx; effective population size; forest; gene pool; glacial period; Holocene; human; interglacial; keystone species; mitochondrion; nonhuman; refugium; species distribution; tundra; Upper Pleistocene; animal; Arctic; Arvicolinae; Asia; Europe; genetic variation; genetics; genome; genomics; greenhouse effect; history; mitochondrial genome; Animals; Arctic Regions; Arvicolinae; Asia; Europe; Genetic Variation; Genome; Genome, Mitochondrial; Genomics; Global Warming; History, Ancient; Refugium; Tundra
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160319
作者单位	Fedorov, V.B., Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775-7000, United States; Trucchi, E., Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Blindern, Oslo, 0316, Norway, Department of Life and Environmental Sciences, Marche Polytechnic University, Ancona, 60131, Italy; Goropashnaya, A.V., Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775-7000, United States; Waltari, E., Department of Biology, City College of New York, New York, NY 10031, United States, Chan Zuckerberg Biohub, San Francisco, CA 94158, United States; Whidden, S.E., Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775-7000, United States, Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, NB E3B 5A3, Canada; Stenseth, N.C., Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Blindern, Oslo, 0316, Norway
推荐引用方式 GB/T 7714	Fedorov V.B.,Trucchi E.,Goropashnaya A.V.,et al. Impact of past climate warming on genomic diversity and demographic history of collared lemmings across the Eurasian Arctic[J],2020,117(6).
APA	Fedorov V.B.,Trucchi E.,Goropashnaya A.V.,Waltari E.,Whidden S.E.,&Stenseth N.C..(2020).Impact of past climate warming on genomic diversity and demographic history of collared lemmings across the Eurasian Arctic.Proceedings of the National Academy of Sciences of the United States of America,117(6).
MLA	Fedorov V.B.,et al."Impact of past climate warming on genomic diversity and demographic history of collared lemmings across the Eurasian Arctic".Proceedings of the National Academy of Sciences of the United States of America 117.6(2020).