气候变化领域集成服务门户(CCPortal): Climate-forced variability of ocean hypoxia

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DOI	10.1126/science.1202422
	Climate-forced variability of ocean hypoxia
	Deutsch C.; Brix H.; Ito T.; Frenzel H.; Thompson L.
发表日期	2011
ISSN	0036-8075
起始页码	336
结束页码	339
卷号	333 期号:6040
英文摘要	Oxygen (O2) is a critical constraint on marine ecosystems. As oceanic O2 falls to hypoxic concentrations, habitability for aerobic organisms decreases rapidly. We show that the spatial extent of hypoxia is highly sensitive to small changes in the ocean's O2 content, with maximum responses at suboxic concentrations where anaerobic metabolisms predominate. In model-based reconstructions of historical oxygen changes, the world's largest suboxic zone, in the Pacific Ocean, varies in size by a factor of 2. This is attributable to climate-driven changes in the depth of the tropical and subtropical thermocline that have multiplicative effects on respiration rates in low-O2 water. The same mechanism yields even larger fluctuations in the rate of nitrogen removal by denitrification, creating a link between decadal climate oscillations and the nutrient limitation of marine photosynthesis.
英文关键词	oxygen; anoxic conditions; climate change; decadal variation; hypoxia; marine ecosystem; metabolism; nutrient limitation; oxic conditions; oxygen; Pacific Decadal Oscillation; photosynthesis; respiration; thermocline; article; climate change; denitrification; hypoxia; marine environment; Pacific Ocean; photosynthesis; priority journal; sea; Anaerobiosis; Climate Change; Computer Simulation; Denitrification; Ecosystem; Nitrogen; Oceans and Seas; Oxygen; Pacific Ocean; Seawater; Temperature; Time Factors; Water Movements; Pacific Ocean
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/243525
作者单位	Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA 90095, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, United States; School of Oceanography, University of Washington, Box 355351, Seattle, WA 98195, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, United States
推荐引用方式 GB/T 7714	Deutsch C.,Brix H.,Ito T.,et al. Climate-forced variability of ocean hypoxia[J],2011,333(6040).
APA	Deutsch C.,Brix H.,Ito T.,Frenzel H.,&Thompson L..(2011).Climate-forced variability of ocean hypoxia.Science,333(6040).
MLA	Deutsch C.,et al."Climate-forced variability of ocean hypoxia".Science 333.6040(2011).