气候变化领域集成服务门户(CCPortal): The fate of organic carbon in marine sediments - New insights from recent data and analysis

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DOI	10.1016/j.earscirev.2020.103146
	The fate of organic carbon in marine sediments - New insights from recent data and analysis
	LaRowe D.E.; Arndt S.; Bradley J.A.; Estes E.R.; Hoarfrost A.; Lang S.Q.; Lloyd K.G.; Mahmoudi N.; Orsi W.D.; Shah Walter S.R.; Steen A.D.; Zhao R.
发表日期	2020
ISSN	00128252
卷号	204
英文摘要	Organic carbon in marine sediments is a critical component of the global carbon cycle, and its degradation influences a wide range of phenomena, including the magnitude of carbon sequestration over geologic timescales, the recycling of inorganic carbon and nutrients, the dissolution and precipitation of carbonates, the production of methane and the nature of the seafloor biosphere. Although much has been learned about the factors that promote and hinder rates of organic carbon degradation in natural systems, the controls on the distribution of organic carbon in modern and ancient sediments are still not fully understood. In this review, we summarize how recent findings are changing entrenched perspectives on organic matter degradation in marine sediments: a shift from a structurally-based chemical reactivity viewpoint towards an emerging acceptance of the role of the ecosystem in organic matter degradation rates. That is, organic carbon has a range of reactivities determined by not only the nature of the organic compounds, but by the biological, geochemical, and physical attributes of its environment. This shift in mindset has gradually come about due to a greater diversity of sample sites, the molecular revolution in biology, discoveries concerning the extent and limits of life, advances in quantitative modeling, investigations of ocean carbon cycling under a variety of extreme paleo-conditions (e.g. greenhouse environments, euxinic/anoxic oceans), the application of novel analytical techniques and interdisciplinary efforts. Adopting this view across scientific disciplines will enable additional progress in understanding how marine sediments influence the global carbon cycle. © 2020 Elsevier B.V.
关键词	Deep biosphere Marine sediments Microorganisms Organic carbon Reactivity
英文关键词	biodegradation; biosphere; carbon cycle; chemical reaction; data processing; environmental fate; marine sediment; microbial community; organic carbon; seafloor
语种	英语
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/203771
作者单位	Department of Earth Sciences, University of Southern California, Los Angeles, CA 90089, United States; BGeosys, Department of Geosciences, Environment and Society, Université libre de Bruxelles, Ave F.D. Roosevelt 50 - CP160/02, Brussels, 1050, Belgium; School of Geography, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom; Interface Geochemistry, GFZ German Research Centre for Geosciences, Potsdam, 14473, Germany; International Ocean Discovery Program, Texas A&M University, 1000 Discovery Drive, College Station, TX 77845, United States; Department of Biochemistry and Microbiology, Rutgers University, School of Environmental and Biological Sciences, 76 Lipman Drive, Suite 218, New Brunswick, NJ 08901, United States; School of the Earth, Ocean, and Environment, University of South Carolina, 701 Sumter St., Columbia, SC 29208, United States; Microbiology Department, University of Tennessee, 1311 Cumberland Avenue, 307 Ken and Blaire Mossman Bldg., Knoxville, TN 37996-1937, ...
推荐引用方式 GB/T 7714	LaRowe D.E.,Arndt S.,Bradley J.A.,et al. The fate of organic carbon in marine sediments - New insights from recent data and analysis[J],2020,204.
APA	LaRowe D.E..,Arndt S..,Bradley J.A..,Estes E.R..,Hoarfrost A..,...&Zhao R..(2020).The fate of organic carbon in marine sediments - New insights from recent data and analysis.Earth Science Reviews,204.
MLA	LaRowe D.E.,et al."The fate of organic carbon in marine sediments - New insights from recent data and analysis".Earth Science Reviews 204(2020).