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DOI	10.1073/pnas.1918953117
	Flat latitudinal diversity gradient caused by the Permian–Triassic mass extinction
	Song H.; Huang S.; Jia E.; Dai X.; Wignall P.B.; Dunhill A.M.
发表日期	2020
ISSN	0027-8424
起始页码	17578
结束页码	17583
卷号	117 期号:30
英文摘要	The latitudinal diversity gradient (LDG) is recognized as one of the most pervasive, global patterns of present-day biodiversity. However, the controlling mechanisms have proved difficult to identify because many potential drivers covary in space. The geological record presents a unique opportunity for understanding the mechanisms which drive the LDG by providing a direct window to deep-time biogeographic dynamics. Here we used a comprehensive database containing 52,318 occurrences of marine fossils to show that the shape of the LDG changed greatly during the Permian–Triassic mass extinction from showing a significant tropical peak to a flattened LDG. The flat LDG lasted for the entire Early Triassic (∼5 My) before reverting to a modern-like shape in the Middle Triassic. The environmental extremes that prevailed globally, especially the dramatic warming, likely induced selective extinction in low latitudes and accumulation of diversity in high latitudes through origination and poleward migration, which combined together account for the flat LDG of the Early Triassic. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Biodiversity; Biogeography; End-permian mass extinction; Global warming; Ocean anoxia
语种	英语
scopus关键词	Article; biodiversity; biogeography; climate change; end Permian mass extinction; environmental factor; environmental monitoring; environmental temperature; fossil; greenhouse effect; latitude; latitudinal diversity gradient; marine environment; nonhuman; priority journal; radiometric dating; sea surface temperature
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/160871
作者单位	Song, H., State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China; Huang, S., Senckenberg Biodiversity and Climate Research Center, Frankfurt am Main, 60325, Germany; Jia, E., State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China; Dai, X., State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China; Wignall, P.B., School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Dunhill, A.M., School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom
推荐引用方式 GB/T 7714	Song H.,Huang S.,Jia E.,等. Flat latitudinal diversity gradient caused by the Permian–Triassic mass extinction[J],2020,117(30).
APA	Song H.,Huang S.,Jia E.,Dai X.,Wignall P.B.,&Dunhill A.M..(2020).Flat latitudinal diversity gradient caused by the Permian–Triassic mass extinction.Proceedings of the National Academy of Sciences of the United States of America,117(30).
MLA	Song H.,et al."Flat latitudinal diversity gradient caused by the Permian–Triassic mass extinction".Proceedings of the National Academy of Sciences of the United States of America 117.30(2020).