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学科主题: Environmental Sciences & Ecology; Marine & Freshwater Biology; Microbiology
题名: MICROBIAL FOOD WEBS AND THE EXPORT OF BIOGENIC CARBON IN OCEANS
作者: LEGENDRE, L ; LEFEVRE, J
关键词: MICROORGANISMS ; PLANKTON ; BACTERIA ; FOOD WEB ; CARBON FLUX
刊名: AQUATIC MICROBIAL ECOLOGY
发表日期: 1995-01-01
卷: 9, 期:1, 页:69-77
部门归属: UNIV BRETAGNE OCCIDENTALE,INST EUROPEEN MER,UNITE RECH FLUX MAT & REPONSES VIVANT,F-29285 BREST,FRANCE
英文摘要: Microbial food webs, which comprise phototrophic picoplankton (or ultraplankton), heterotrophic bacteria and protozoa, are ubiquitous in marine waters. Members of the microbial food web may play various roles in the export of biogenic carbon. For example, it has been postulated that high bacterial activity may sometimes prevent a significant fraction of the production by large phytoplankton from reaching metazoan consumers. Phototrophic or heterotrophic small plankton cells may be readily exported (i.e. biological CO2 pump) if incorporated into large particles, through either endosymbiosis with larger cells, or development on material accumulated in hydrodynamic traps, or inclusion into marine snow, or grazing by large planktonic microphages (e.g. salps) and incorporation in their sometimes fast-sinking faecal pellets. Another aspect is the export of carbonate by members of the microbial food web (e.g. coccolithophores, foraminifera), which influences the carbon dioxide balance of the ocean (i.e. carbonate pump). Finally, carbon bound into refractory dissolved organic matter is chemically sequestered in the upper ocean, before being exported to depth. The activity of microbial food webs may therefore influence in several ways the export (and sequestration) of biogenic carbon in oceans.
语种: 英语
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/9318
Appears in Collections:海洋微食物网高被引文献_期刊论文

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LEGENDRE, L; LEFEVRE, J.MICROBIAL FOOD WEBS AND THE EXPORT OF BIOGENIC CARBON IN OCEANS,AQUATIC MICROBIAL ECOLOGY,1995,9(1):69-77
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