气候变化领域集成服务门户(CCPortal): Ecological persistence, incumbency and reorganization in the Karoo Basin during the Permian-Triassic transition

CCPortal

DOI	10.1016/j.earscirev.2018.10.014
	Ecological persistence, incumbency and reorganization in the Karoo Basin during the Permian-Triassic transition
	Roopnarine P.D.; Angielczyk K.D.; Weik A.; Dineen A.
发表日期	2019
ISSN	0012-9062
起始页码	244
结束页码	263
卷号	189
英文摘要	The geological persistence of biotic assemblages and their reorganization or destruction by mass extinctions are key features of long-term macroevolutionary and macroecological patterns in the fossil record. These events affected biotic history disproportionately and left permanent imprints on global biodiversity. Here we hypothesize that the geological persistence and incumbency of paleocommunities and taxa are maintained by patterns of biotic interactions that favour the ecological persistence and stable coexistence of interacting species. Equally complex communities produced by alternative macroevolutionary histories, and hence of different functional structure, may support less stable species coexistence, and are therefore less persistent. However, alternative communities with the same functional structure as a persistent paleocommunity, but variable clade richnesses, tend to be as or more stable than observed palecommunities, thus demonstrating that geological persistence is not the result of constrained patterns, or ecological locking. Numerically modeled food webs for seven tetrapod-dominated paleocommunities spanning the traditionally-recognized Permian-Triassic boundary in the Karoo Basin of South Africa, show that incumbency before the Permian-Triassic mass extinction was maintained by a dynamically stable, community-level system of biotic interactions, thereby supporting the hypothesis. The system's structure was lost through successive extinction pulses, and replaced initially by a rich but geologically ephemeral Early Triassic fauna, which itself was replaced by a novel Middle Triassic community with renewed incumbency. The loss of persistence and incumbency, therefore, did not result simply from the extinction of species; instead the largest declines were accompanied by the addition of new species to the system in the earliest aftermath of the event. We therefore further hypothesize that ecological reorganization and evolutionary innovation in the wake of mass extinctions play key roles in the destruction of highly stable, preexisting systems of biotic interaction. In the case of the Karoo Basin paleocommunities, we estimate that a return to stable interactions, and thus incumbency, was achieved in approximately 4–17 Ma. © 2018 Elsevier B.V.
英文关键词	Ecological model; Global stability; Incumbency; Karoo Basin; Mass extinction; Paleocommunity; Permian-Triassic
语种	英语
scopus关键词	biodiversity; biotic factor; community structure; ecological modeling; fossil record; macroecology; mass extinction; Permian-Triassic boundary; Karoo; South Africa; Tetrapoda
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/209964
作者单位	Department of Invertebrate Zoology and Geology, California Academy of Sciences, San Francisco, CA 94118, United States; Integrative Research Center, Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, IL 60605, United States; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China
推荐引用方式 GB/T 7714	Roopnarine P.D.,Angielczyk K.D.,Weik A.,et al. Ecological persistence, incumbency and reorganization in the Karoo Basin during the Permian-Triassic transition[J],2019,189.
APA	Roopnarine P.D.,Angielczyk K.D.,Weik A.,&Dineen A..(2019).Ecological persistence, incumbency and reorganization in the Karoo Basin during the Permian-Triassic transition.EARTH-SCIENCE REVIEWS,189.
MLA	Roopnarine P.D.,et al."Ecological persistence, incumbency and reorganization in the Karoo Basin during the Permian-Triassic transition".EARTH-SCIENCE REVIEWS 189(2019).