气候变化领域集成服务门户(CCPortal): Dead clades walking are a pervasive macroevolutionary pattern

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DOI	10.1073/pnas.2019208118
	Dead clades walking are a pervasive macroevolutionary pattern
	Barnes B.D.; Sclafani J.A.; Zaffos A.
发表日期	2021
ISSN	00278424
卷号	118 期号:15
英文摘要	D. Jablonski [Proc. Natl. Acad. Sci. U.S.A. 99, 8139-8144 (2002)] coined the term “dead clades walking” (DCWs) to describe marine fossil orders that experience significant drops in genus richness during mass extinction events and never rediversify to previous levels. This phenomenon is generally interpreted as further evidence that the macroevolutionary consequences of mass extinctions can continue well past the formal boundary. It is unclear, however, exactly how long DCWs are expected to persist after extinction events and to what degree they impact broader trends in Phanerozoic biodiversity. Here we analyze the fossil occurrences of 134 skeletonized marine invertebrate orders in the Paleobiology Database (paleobiodb.org) using a Bayesian method to identify significant change points in genus richness. Our analysis identifies 70 orders that experience major diversity losses without recovery. Most of these taxa, however, do not fit the popular conception of DCWs as clades that narrowly survive a mass extinction event and linger for only a few stages before succumbing to extinction. The median postdrop duration of these DCW orders is long (>30 Myr), suggesting that previous studies may have underestimated the long-term taxonomic impact of mass extinction events. More importantly, many drops in diversity without recovery are not associated with mass extinction events and occur during background extinction stages. The prevalence of DCW orders throughout both mass and background extinction intervals and across phyla (>50% of all marine invertebrate orders) suggests that the DCW pattern is a major component of macroevolutionary turnover. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Biodiversity; Macroevolution; Mass extinction; Recovery
语种	英语
scopus关键词	article; biodiversity; cladistics; conception; fossil; human; human experiment; marine invertebrate; mass extinction; nonhuman; ordo; Phanerozoic; prevalence; turnover rate; walking
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/179938
作者单位	Department of Geosciences, Pennsylvania State University, University Park, PA 16802, United States; Department of Environmental Studies, University of Illinois Springfield, Springfield, IL 62703, United States; Department of Geological Sciences, Stanford University, Stanford, CA 94305, United States; Arizona State Geological Survey, University of Arizona, Tucson, AZ 85721, United States
推荐引用方式 GB/T 7714	Barnes B.D.,Sclafani J.A.,Zaffos A.. Dead clades walking are a pervasive macroevolutionary pattern[J],2021,118(15).
APA	Barnes B.D.,Sclafani J.A.,&Zaffos A..(2021).Dead clades walking are a pervasive macroevolutionary pattern.Proceedings of the National Academy of Sciences of the United States of America,118(15).
MLA	Barnes B.D.,et al."Dead clades walking are a pervasive macroevolutionary pattern".Proceedings of the National Academy of Sciences of the United States of America 118.15(2021).