气候变化领域集成服务门户(CCPortal): Unique biodiversity in Arctic marine forests is shaped by diverse recolonization pathways and far northern glacial refugia

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DOI	10.1073/pnas.2002753117
	Unique biodiversity in Arctic marine forests is shaped by diverse recolonization pathways and far northern glacial refugia
	Bringloe T.T.; Verbruggen H.; Saunders G.W.
发表日期	2020
ISSN	0027-8424
起始页码	22590
结束页码	22596
卷号	117 期号:36
英文摘要	The Arctic is experiencing a rapid shift toward warmer regimes, calling for a need to understand levels of biodiversity and ecosystem responses to climate cycles. This study presents genetic data for 109 Arctic marine forest species (seaweeds), which revealed contiguous populations extending from the Bering Sea to the northwest Atlantic, with high levels of genetic diversity in the east Canadian Arctic. One-fifth of the species sampled appeared restricted to Arctic waters. Further supported by hindcasted species distributions during the Last Glacial Maximum, we hypothesize that Arctic coastal systems were recolonized from many geographically disparate refugia leading to enriched diversity levels in the east Canadian Arctic, with important contributions stemming from northerly refugia likely centered along southern Greenland. Our results suggest Arctic marine biomes persisted through cycles of glaciation, leading to unique assemblages in polar waters, rather than being entirely derived from southerly (temperate) areas following glaciation. As such, Arctic marine species are potentially born from selective pressures during Cenozoic global cooling and eventual ice conditions beginning in the Pleistocene. Arctic endemic diversity was likely additionally driven by repeated isolations into globally disparate refugia during glaciation. This study highlights the need to take stock of unique Arctic marine biodiversity. Amplification of warming and loss of perennial ice cover are set to dramatically alter available Arctic coastal habitat, with the potential loss of diversity and decline in ecosystem resilience. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Endemism; Last Glacial Maximum; Pleistocene glaciation; Species distribution models; Species-pump
语种	英语
scopus关键词	Arctic; article; Bering Sea; biodiversity; cooling; ecosystem resilience; forest; genetic variability; glaciation; Greenland; habitat; ice cover; last glacial maximum; marine environment; marine species; nonhuman; refugium; seaweed; species distribution; warming; aquatic species; Arctic; ecosystem; forest; ice cover; Aquatic Organisms; Arctic Regions; Biodiversity; Ecosystem; Forests; Ice Cover; Refugium
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/160228
作者单位	Bringloe, T.T., Centre for Environmental and Molecular Algal Research, Biology Department, University of New Brunswick, Fredericton, NB E3B 5A3, Canada, School of BioSciences, University of Melbourne, Parkville, VIC 3010, Australia; Verbruggen, H., School of BioSciences, University of Melbourne, Parkville, VIC 3010, Australia; Saunders, G.W., Centre for Environmental and Molecular Algal Research, Biology Department, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
推荐引用方式 GB/T 7714	Bringloe T.T.,Verbruggen H.,Saunders G.W.. Unique biodiversity in Arctic marine forests is shaped by diverse recolonization pathways and far northern glacial refugia[J],2020,117(36).
APA	Bringloe T.T.,Verbruggen H.,&Saunders G.W..(2020).Unique biodiversity in Arctic marine forests is shaped by diverse recolonization pathways and far northern glacial refugia.Proceedings of the National Academy of Sciences of the United States of America,117(36).
MLA	Bringloe T.T.,et al."Unique biodiversity in Arctic marine forests is shaped by diverse recolonization pathways and far northern glacial refugia".Proceedings of the National Academy of Sciences of the United States of America 117.36(2020).