globalchange  > 气候变化与战略
DOI: 10.1016/j.earscirev.2020.103146
论文题名:
The fate of organic carbon in marine sediments - New insights from recent data and analysis
作者: 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.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 204
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166140
Appears in Collections:气候变化与战略

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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, United States; Department of Earth & Planetary Sciences, McGill University, 3450 University Street, Montreal, Quebec H3A 0E8, Canada; Department of Earth and Environmental Sciences, Paleontology & Geobiology, Ludwig-Maximilians-Universität München, Munich, 80333, Germany; GeoBio-CenterLMU, Ludwig-Maximilians-Universität München, Munich, 80333, Germany; School of Marine Science and Policy, University of Delaware, 700 Pilottown Road, Lewes, DE 19958, United States; Department of Earth and Planetary Sciences, University of Tennessee, 1412 Circle Drive, Knoxville, TN 37996-1410, United States; School of Marine Science and Policy, University of Delaware, Lewes, DE 19958, United States

Recommended Citation:
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]. Earth Science Reviews,2020-01-01,204
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