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DOI | 10.1038/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
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ISSN | 2041-1723 |
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 |
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/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 |
推荐引用方式 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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