气候变化领域集成服务门户(CCPortal): End-Permian marine extinction due to temperature-driven nutrient recycling and euxinia

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DOI	10.1038/s41561-021-00829-7
	End-Permian marine extinction due to temperature-driven nutrient recycling and euxinia
	Hülse D.; Lau K.V.; van de Velde S.J.; Arndt S.; Meyer K.M.; Ridgwell A.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:11
英文摘要	Extreme warming at the end-Permian induced profound changes in marine biogeochemical cycling and animal habitability, leading to the largest metazoan extinction in Earth’s history. However, a causal mechanism for the extinction that is consistent with various proxy records of geochemical conditions through the interval has yet to be determined. Here we combine an Earth system model with global and local redox interpretations from the Permian/Triassic in an attempt to identify this causal mechanism. Our results show that a temperature-driven increase in microbial respiration can reconcile reconstructions of the spatial distribution of euxinia and seafloor anoxia spanning the Permian–Triassic transition. We illustrate how enhanced metabolic rates would have strengthened upper-ocean nutrient (phosphate) recycling, and thus shoaled and intensified the oxygen minimum zones, eventually causing euxinic waters to expand onto continental shelves and poison benthic habitats. Taken together, our findings demonstrate the sensitive interconnections between temperature, microbial metabolism, ocean redox state and carbon cycling during the end-Permian mass extinction. As enhanced microbial activity in the ocean interior also lowers subsurface dissolved inorganic carbon isotopic values, the carbon release as inferred from isotope changes in shallow subsurface carbonates is likely overestimated, not only for this event, but perhaps for many other carbon cycle and climate perturbations through Earth’s history. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	biogeochemical cycle; euxinic environment; extinction; marine environment; metazoan; nutrient cycling; Permian; Permian-Triassic boundary; proxy climate record; redox conditions; seafloor; temperature effect; upper ocean; Metazoa
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250844
作者单位	Department of Earth and Planetary Sciences, University of California, Riverside, CA, United States; Geosciences and Earth and Environmental Systems Institute, The Pennsylvania State University, University Park, PA, United States; Geology and Geophysics, University of Wyoming, Laramie, WY, United States; Bgeosys, Geoscience, Environment & Society, Université Libre de Bruxelles, Brussels, Belgium; Environmental Science, Willamette University, Salem, OR, United States
推荐引用方式 GB/T 7714	Hülse D.,Lau K.V.,van de Velde S.J.,et al. End-Permian marine extinction due to temperature-driven nutrient recycling and euxinia[J],2021,14(11).
APA	Hülse D.,Lau K.V.,van de Velde S.J.,Arndt S.,Meyer K.M.,&Ridgwell A..(2021).End-Permian marine extinction due to temperature-driven nutrient recycling and euxinia.Nature Geoscience,14(11).
MLA	Hülse D.,et al."End-Permian marine extinction due to temperature-driven nutrient recycling and euxinia".Nature Geoscience 14.11(2021).