DOI: 10.1073/pnas.2002753117
论文题名: Unique biodiversity in Arctic marine forests is shaped by diverse recolonization pathways and far northern glacial refugia
作者: Bringloe T.T. ; Verbruggen H. ; Saunders G.W.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期: 36 起始页码: 22590
结束页码: 22596
语种: 英语
英文关键词: Endemism
; Last Glacial Maximum
; Pleistocene glaciation
; Species distribution models
; Species-pump
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163400
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
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]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(36)