GSTDTAP  > 资源环境科学
DOI10.1038/s41467-020-16725-4
Permo-Triassic boundary carbon and mercury cycling linked to terrestrial ecosystem collapse
Dal Corso, Jacopo1,2; Mills, Benjamin J. W.1; Chu, Daoliang2; Newton, Robert J.1; Mather, Tamsin A.3; Shu, Wenchao2; Wu, Yuyang2; Tong, Jinnan2; Wignall, Paul B.1
2020-06-11
发表期刊NATURE COMMUNICATIONS
ISSN2041-1723
出版年2020
卷号11期号:1
文章类型Article
语种英语
国家England; Peoples R China
英文摘要

Records suggest that the Permo-Triassic mass extinction (PTME) involved one of the most severe terrestrial ecosystem collapses of the Phanerozoic. However, it has proved difficult to constrain the extent of the primary productivity loss on land, hindering our understanding of the effects on global biogeochemistry. We build a new biogeochemical model that couples the global Hg and C cycles to evaluate the distinct terrestrial contribution to atmosphere-ocean biogeochemistry separated from coeval volcanic fluxes. We show that the large short-lived Hg spike, and nadirs in delta Hg-202 and delta C-13 values at the marine PTME are best explained by a sudden, massive pulse of terrestrial biomass oxidation, while volcanism remains an adequate explanation for the longer-term geochemical changes. Our modelling shows that a massive collapse of terrestrial ecosystems linked to volcanism-driven environmental change triggered significant biogeochemical changes, and cascaded organic matter, nutrients, Hg and other organically-bound species into the marine system. The environmental changes at the Permian-Triassic boundary are thought to have been caused primarily by volcanic eruptions. Here the authors develop a model to show that the loss of ecosystems on land and consequent massive terrestrial biomass oxidation triggered large biogeochemical changes in the oceans at the time of the marine mass extinction.


领域地球科学 ; 气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000542765300003
WOS关键词MASS EXTINCTION ; END ; ACIDIFICATION ; VOLCANISM ; ANOXIA ; OCEANS ; MODEL
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/274411
专题资源环境科学
作者单位1.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England;
2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China;
3.Univ Oxford, Dept Earth Sci, South Parks Rd, Oxford OX1 3AN, England
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GB/T 7714
Dal Corso, Jacopo,Mills, Benjamin J. W.,Chu, Daoliang,et al. Permo-Triassic boundary carbon and mercury cycling linked to terrestrial ecosystem collapse[J]. NATURE COMMUNICATIONS,2020,11(1).
APA Dal Corso, Jacopo.,Mills, Benjamin J. W..,Chu, Daoliang.,Newton, Robert J..,Mather, Tamsin A..,...&Wignall, Paul B..(2020).Permo-Triassic boundary carbon and mercury cycling linked to terrestrial ecosystem collapse.NATURE COMMUNICATIONS,11(1).
MLA Dal Corso, Jacopo,et al."Permo-Triassic boundary carbon and mercury cycling linked to terrestrial ecosystem collapse".NATURE COMMUNICATIONS 11.1(2020).
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