Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2019208118 |
Dead clades walking are a pervasive macroevolutionary pattern | |
B. Davis Barnes; Judith A. Sclafani; Andrew Zaffos | |
2021-04-13 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2021 |
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. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/322003 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | B. Davis Barnes,Judith A. Sclafani,Andrew Zaffos. Dead clades walking are a pervasive macroevolutionary pattern[J]. Proceedings of the National Academy of Science,2021. |
APA | B. Davis Barnes,Judith A. Sclafani,&Andrew Zaffos.(2021).Dead clades walking are a pervasive macroevolutionary pattern.Proceedings of the National Academy of Science. |
MLA | B. Davis Barnes,et al."Dead clades walking are a pervasive macroevolutionary pattern".Proceedings of the National Academy of Science (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论