气候变化领域集成服务门户(CCPortal): Genetic diversity of soil invertebrates corroborates timing estimates for past collapses of the West Antarctic Ice Sheet

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DOI	10.1073/pnas.2007925117
	Genetic diversity of soil invertebrates corroborates timing estimates for past collapses of the West Antarctic Ice Sheet
	Collins G.E.; Hogg I.D.; Convey P.; Sancho L.G.; Cowan D.A.; Lyons W.B.; Adams B.J.; Wall D.H.; Green T.G.A.
发表日期	2020
ISSN	0027-8424
起始页码	22293
结束页码	22302
卷号	117 期号:36
英文摘要	During austral summer field seasons between 1999 and 2018, we sampled at 91 locations throughout southern Victoria Land and along the Transantarctic Mountains for six species of endemic microarthropods (Collembola), covering a latitudinal range from 76.0°S to 87.3°S. We assembled individual mitochondrial cytochrome c oxidase subunit 1 (COI) sequences (n = 866) and found high levels of sequence divergence at both small (<10 km) and large (>600 km) spatial scales for four of the six Collembola species. We applied molecular clock estimates and assessed genetic divergences relative to the timing of past glacial cycles, including collapses of the West Antarctic Ice Sheet (WAIS). We found that genetically distinct lineages within three species have likely been isolated for at least 5.54 My to 3.52 My, while the other three species diverged more recently (<2 My). We suggest that Collembola had greater dispersal opportunities under past warmer climates, via flotation along coastal margins. Similarly increased opportunities for dispersal may occur under contemporary climate warming scenarios, which could influence the genetic structure of extant populations. As Collembola are a living record of past landscape evolution within Antarctica, these findings provide biological evidence to support geological and glaciological estimates of historical WAIS dynamics over the last ca. 5 My. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Climate change \| microarthropods \| molecular clock \| terrestrial biodiversity \| phylogeography
语种	英语
scopus关键词	Antarctica; article; biodiversity; climate warming; Collembola; flotation; gene structure; genetic variability; ice sheet; major clinical study; molecular clock; nonhuman; phylogeography; soil invertebrate; animal; Antarctica; climate change; genetic variation; genetics; ice cover; invertebrate; season; soil; Animals; Antarctic Regions; Climate Change; Genetic Variation; Ice Cover; Invertebrates; Seasons; Soil
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/158843
作者单位	Collins, G.E., School of Science, University of Waikato, Hamilton, 3240, New Zealand; Hogg, I.D., School of Science, University of Waikato, Hamilton, 3240, New Zealand, Canadian High Arctic Research Station Polar Knowledge Canada, Cambridge, Ba NU X0B 0C0, Canada; Convey, P., British Antarctic Survey, Natural Environment Research Council, Cambridge, CB3 0ET, United Kingdom; Sancho, L.G., Departamento de Biología Vegetal II, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, 28040, Spain; Cowan, D.A., Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria, 0002, South Africa; Lyons, W.B., School of Earth Sciences, Byrd Polar and Climate Research Center, The Ohio State University, Columbus, OH 43210, United States; Adams, B.J., Department of Biology, Brigham Young University, Provo, UT 84602, United States, Evolutionary Ecology Laboratories, Brigham Young University, Provo, UT 84602, United States, Monte L. Bean Museum, Brigham Young University, Provo, UT ...
推荐引用方式 GB/T 7714	Collins G.E.,Hogg I.D.,Convey P.,et al. Genetic diversity of soil invertebrates corroborates timing estimates for past collapses of the West Antarctic Ice Sheet[J],2020,117(36).
APA	Collins G.E..,Hogg I.D..,Convey P..,Sancho L.G..,Cowan D.A..,...&Green T.G.A..(2020).Genetic diversity of soil invertebrates corroborates timing estimates for past collapses of the West Antarctic Ice Sheet.Proceedings of the National Academy of Sciences of the United States of America,117(36).
MLA	Collins G.E.,et al."Genetic diversity of soil invertebrates corroborates timing estimates for past collapses of the West Antarctic Ice Sheet".Proceedings of the National Academy of Sciences of the United States of America 117.36(2020).