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Trophic interactions between picophytoplankton and micro- and nanozooplankton in the western Arabian Sea during the NE monsoon 1993
Reckermann, M; Veldhuis, MJW
1997
发表期刊AQUATIC MICROBIAL ECOLOGY
ISSN0948-3055
卷号12期号:3页码:263-273
摘要The grazing pressure of micro- and nanozooplankton on phytoplankton was estimated in serial dilution experiments in the northwestern Arabian Sea and its adjacent areas (the Somali Current, the Somali Basin, the Gulf of Aden and the southern Red Sea) during the NE monsoon 1992-1993. Microzooplankton grazing rates (g) on total phytoplankton (analyzed as chi a) were generally exceeded by phytoplankton growth rates (g = 0.2 to 1.19 d(-1), mean 0.48 d(-1); mu = 0.52 to 1.12 d(-1), mean 0.72 d(-1)), resulting in an average daily consumption of 38 % of the phytoplankton standing stock and 67 % of the primary production. Microzooplankton grazing on 4 picophytoplankton groups (Prochlorococcus spp., Synechococcus spp., and 2 picoeukaryotes) analyzed by flow cytometry showed growth (mu = 0.27 to 0.92 d(-1), mean 0.68 d(-1)) and grazing mortality rates (g = 0.26 to 0.73 d(-1), mean 0.67 d(-1)) well in balance, with an average of 49 % of the standing stock and 102% of the primary production grazed per day. Picophytoplankton growth and grazing mortality rates increased dramatically when grazers >10 mu m were removed. These results suggest a control of the small grazers by larger ones (trophic cascade) and a close coupling between picoautotrophic prey and small grazers. The trophic cascade within the microbial food web of the nanoplankton encompasses 3 trophic levels: picoplankton - small HNF - larger flagellates and ciliates.
部门归属INST OSTSEEFORSCH,D-18119 WARNEMUNDE,GERMANY; NETHERLANDS INST SEA RES,NL-1790 AB DEN BURG,NETHERLANDS
关键词Grazing Picophytoplankton Prochlorococcus Synechococcus Picoeukaryotes Flow Cytometry Arabian Sea Trophic Cascade
学科领域Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology
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语种英语
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/9322
专题海洋微食物网高被引文献
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Reckermann, M,Veldhuis, MJW. Trophic interactions between picophytoplankton and micro- and nanozooplankton in the western Arabian Sea during the NE monsoon 1993[J]. AQUATIC MICROBIAL ECOLOGY,1997,12(3):263-273.
APA Reckermann, M,&Veldhuis, MJW.(1997).Trophic interactions between picophytoplankton and micro- and nanozooplankton in the western Arabian Sea during the NE monsoon 1993.AQUATIC MICROBIAL ECOLOGY,12(3),263-273.
MLA Reckermann, M,et al."Trophic interactions between picophytoplankton and micro- and nanozooplankton in the western Arabian Sea during the NE monsoon 1993".AQUATIC MICROBIAL ECOLOGY 12.3(1997):263-273.
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