DOI: 10.1073/pnas.1821123116
论文题名: Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions
作者: Rasmussen C.M.Ø. ; Kröger B. ; Nielsen M.L. ; Colmenar J.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2019
卷: 116, 期: 15 起始页码: 7207
结束页码: 7213
语种: 英语
英文关键词: Biodiversity accumulation
; Capture–recapture
; Earth state shifts
; First differences
; Ordovician radiation
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163562
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Rasmussen C.M.Ø.,Kröger B.,Nielsen M.L.,et al. Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions[J]. Proceedings of the National Academy of Sciences of the United States of America,2019-01-01,116(15)