气候变化领域集成服务门户(CCPortal): Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions

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DOI	10.1073/pnas.1821123116
	Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions
	Rasmussen C.M.Ø.; Kröger B.; Nielsen M.L.; Colmenar J.
发表日期	2019
ISSN	0027-8424
起始页码	7207
结束页码	7213
卷号	116 期号:15
英文摘要	The greatest relative changes in marine biodiversity accumulation occurred during the Early Paleozoic. The precision of temporal constraints on these changes is crude, hampering our understanding of their timing, duration, and links to causal mechanisms. We match fossil occurrence data to their lithostratigraphical ranges in the Paleobiology Database and correlate this inferred taxon range to a constructed set of biostratigraphically defined high-resolution time slices. In addition, we apply capture–recapture modeling approaches to calculate a biodiversity curve that also considers ta-phonomy and sampling biases with four times better resolution of previous estimates. Our method reveals a stepwise biodiversity increase with distinct Cambrian and Ordovician radiation events that are clearly separated by a 50-million-year-long period of slow biodiversity accumulation. The Ordovician Radiation is confined to a 15-million-year phase after which the Late Ordovician extinctions lowered generic richness and further delayed a biodiversity rebound by at least 35 million years. Based on a first-differences approach on potential abiotic drivers controlling richness, we find an overall correlation with oxygen levels, with temperature also exhibiting a coordinated trend once equatorial sea surface temperatures fell to present-day levels during the Middle Ordovician Darriwilian Age. Contrary to the traditional view of the Late Ordovician extinctions, our study suggests a protracted crisis interval linked to intense volcanism during the middle Late Ordovician Katian Age. As richness levels did not return to prior levels during the Silurian—a time of continental amalgamation—we further argue that plate tectonics exerted an overarching control on biodiversity accumulation. © 2019 National Academy of Sciences. All Rights Reserved.
英文关键词	Biodiversity accumulation; Capture–recapture; Earth state shifts; First differences; Ordovician radiation
语种	英语
scopus关键词	Article; bioaccumulation; biodiversity; fossil; Llandovery (epoch); Lower Cambrian; Lower Ordovician; nonhuman; Paleozoic; priority journal; sea surface temperature; species extinction; species richness; taphonomy; trend study; biodiversity; factual database; paleontology; Biodiversity; Databases, Factual; Extinction, Biological; Paleontology
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/160371
作者单位	Rasmussen, C.M.Ø., Natural History Museum of Denmark, University of Copenhagen, Copenhagen, DK-1350, Denmark; Kröger, B., Finnish Museum of Natural History, University of Helsinki, Helsinki, 00014, Finland; Nielsen, M.L., Natural History Museum of Denmark, University of Copenhagen, Copenhagen, DK-1350, Denmark, School of Earth Sciences, University of Bristol, Bristol, BS8 1RL, United Kingdom; Colmenar, J., Natural History Museum of Denmark, University of Copenhagen, Copenhagen, DK-1350, Denmark
推荐引用方式 GB/T 7714	Rasmussen C.M.Ø.,Kröger B.,Nielsen M.L.,et al. Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions[J],2019,116(15).
APA	Rasmussen C.M.Ø.,Kröger B.,Nielsen M.L.,&Colmenar J..(2019).Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions.Proceedings of the National Academy of Sciences of the United States of America,116(15).
MLA	Rasmussen C.M.Ø.,et al."Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions".Proceedings of the National Academy of Sciences of the United States of America 116.15(2019).