气候变化领域集成服务门户(CCPortal): Molecular fossil record of elevated methane levels in late Pleistocene coastal waters

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DOI	10.1126/science.1079601
	Molecular fossil record of elevated methane levels in late Pleistocene coastal waters
	Hinrichs K.-U.; Hmelo L.R.; Sylva S.P.
发表日期	2003
ISSN	0036-8075
起始页码	1214
结束页码	1217
卷号	299 期号:5610
英文摘要	Accumulating evidence suggests that methane has been released episodically from hydrates trapped in sea floor sediments during many intervals of rapid climate warming. Here we show that sediments from the Santa Barbara Basin deposited during warm intervals in the last glacial period contain molecular fossils that are diagnostic of aerobic and anaerobic methanotrophs. Sediment intervals with high abundances of these compounds indicate episodes of vigorous methanotrophic activity in methane-laden water masses. Signals for anaerobic methanotrophy in 44, 100-year-old sediment are evidence for particutarty intense methane emissions and suggest that the basin's methane cycle can profoundly affect oxygen budgets in the water column.
英文关键词	Climate change; Hydrates; Oxygen; Sediments; Molecular fossil records; Methane; methane; coastal water; fossil record; methane; methanotrophy; paleoclimate; Pleistocene; aerobic bacterium; anaerobic bacterium; article; coastal waters; fossil; greenhouse effect; methanotrophic bacterium; Pleistocene; priority journal; sediment; signal detection; water analysis; Aerobiosis; Anaerobiosis; Animals; Archaea; Bacteria; Bacteria, Aerobic; Bacteria, Anaerobic; Biomass; Carbon Isotopes; Climate; Fossils; Geologic Sediments; Methane; Methylococcaceae; Oxygen; Plankton; Protozoa; Seawater; Triterpenes; Water Microbiology; Pacific Ocean; United States; Bacteria (microorganisms)
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244014
作者单位	Department of Geology, Woods Hole Oceanogr. Inst. (WHOI), Woods Hote, MA 02543, United States; DFG Res. Center for Ocean Margins, University of Bremen, Post Office Box 330 440, D-28334 Bremen, Germany
推荐引用方式 GB/T 7714	Hinrichs K.-U.,Hmelo L.R.,Sylva S.P.. Molecular fossil record of elevated methane levels in late Pleistocene coastal waters[J],2003,299(5610).
APA	Hinrichs K.-U.,Hmelo L.R.,&Sylva S.P..(2003).Molecular fossil record of elevated methane levels in late Pleistocene coastal waters.Science,299(5610).
MLA	Hinrichs K.-U.,et al."Molecular fossil record of elevated methane levels in late Pleistocene coastal waters".Science 299.5610(2003).