气候变化领域集成服务门户(CCPortal): Biogenic carbon cycling in the upper ocean: Effects of microbial respiration

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DOI	10.1126/science.291.5512.2398
	Biogenic carbon cycling in the upper ocean: Effects of microbial respiration
	Rivkin R.B.; Legendre L.
发表日期	2001
ISSN	0036-8075
起始页码	2398
结束页码	2400
卷号	291 期号:5512
英文摘要	Food-web processes are important controls of oceanic biogenic carbon flux and ocean-atmosphere carbon dioxide exchange. Two key controlling parameters are the growth efficiencies of the principal trophic components and the rate of carbon remineralization. We report that bacterial growth efficiency is an inverse function of temperature. This relationship permits bacterial respiration in the euphotic zone to be computed from temperature and bacterial production. Using the temperature-growth efficiency relationship, we show that bacterial respiration generally accounts for most community respiration. This implies that a larger fraction of assimilated carbon is respired at low than at high latitudes, so a greater proportion of production can be exported in polar than in tropical regions. Because bacterial production is also a function of temperature, it should be possible to compute euphotic zone heterotrophic respiration at large scales using remotely sensed information.
英文关键词	atmosphere-ocean system; biogenic mineral; carbon cycle; carbon dioxide; microbial activity; respiration; article; atmosphere; bacterial growth; carbon dioxide breathing; carbon dioxide transport; mineralization; nonhuman; priority journal; sea; temperature dependence; Atmosphere; Bacteria; Biomass; Carbon; Carbon Dioxide; Ecosystem; Food Chain; Oceans and Seas; Oxygen Consumption; Seawater; Temperature; 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/245237
作者单位	Ocean Sciences Centre, Memorial University of Newfoundland, St. John's, Nfld. A1C 5S7, Canada
推荐引用方式 GB/T 7714	Rivkin R.B.,Legendre L.. Biogenic carbon cycling in the upper ocean: Effects of microbial respiration[J],2001,291(5512).
APA	Rivkin R.B.,&Legendre L..(2001).Biogenic carbon cycling in the upper ocean: Effects of microbial respiration.Science,291(5512).
MLA	Rivkin R.B.,et al."Biogenic carbon cycling in the upper ocean: Effects of microbial respiration".Science 291.5512(2001).