globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.07.053
Scopus记录号: 2-s2.0-85053133486
论文题名:
Ubiquitous and significant anaerobic oxidation of methane in freshwater lake sediments
作者: Martinez-Cruz K.; Sepulveda-Jauregui A.; Casper P.; Anthony K.W.; Smemo K.A.; Thalasso F.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144
起始页码: 332
结束页码: 340
语种: 英语
英文关键词: Electron acceptors ; Methanogenesis ; Methanotrophy ; Sediment incubations ; Stable isotopes
Scopus关键词: Isotopes ; Lakes ; Methane ; Organic carbon ; Submarine geology ; Water ; Electron acceptor ; Methanogenesis ; Methanotrophy ; Sediment incubations ; Stable isotopes ; Anoxic sediments ; air-soil interaction ; anaerobic digestion ; anoxic sediment ; atmosphere-biosphere interaction ; electron ; freshwater environment ; laboratory method ; lacustrine deposit ; methane ; methanogenesis ; methanotrophy ; oxidation ; stable isotope
英文摘要: Anaerobic oxidation of methane (AOM) is a microbial process that consumes dissolved methane (CH4) in anoxic sediments and soils and mitigates CH4 release to the atmosphere. The degree to which AOM limits global biospheric CH4 emissions is not fully understood. In marine sediments, where the process was first described, AOM is responsible for oxidizing >90% of the CH4 produced. More recently, AOM has been observed in soils, peatlands, and freshwater ecosystems. In lakes, where sediment anoxia, organic carbon turnover, and CH4 production are common, AOM is not well studied but could represent a significant CH4 sink and constraint on emissions. Here, we present evidence for the occurrence of AOM in the sediment of thirteen lakes that span a global climatic and trophic gradient. We further quantified and modeled AOM patterns and studied potential microbial controls of AOM using laboratory incubations of sediment and stable isotope measurements in three of the thirteen lakes. We demonstrate that AOM is widespread in freshwater lake sediments and accounts for 29%–34% (95% confidence interval) of the mean total CH4 produced in surface and near-surface lake sediments. © 2018
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112487
Appears in Collections:气候减缓与适应

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作者单位: Cinvestav, Department of Biotechnology and Bioengineering, 2508 IPN Ave., San Pedro Zacatenco, Mexico City, 07360, Mexico; Leibniz Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhütte 2, Stechlin16775, Germany; University of Magallanes, Department of Science and Natural Resources, Manuel Bulnes Ave., Punta Arenas, 01890, Chile; University of Alaska Fairbanks, Water and Environmental Research Center, 1760 Tanana Loop, Fairbanks, Alaska 99775, United States; Skidmore College, Environmental Studies and Sciences Program, 815 N. Broadway, Saratoga Springs, New York 12866, United States

Recommended Citation:
Martinez-Cruz K.,Sepulveda-Jauregui A.,Casper P.,et al. Ubiquitous and significant anaerobic oxidation of methane in freshwater lake sediments[J]. Water Research,2018-01-01,144
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