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Size-fractionated mesozooplankton biomass and grazing impact on phytoplankton in northern South China Sea during four seasons
Chen, Mianrun1; Liu, Hongbin2; Song, Shuqun3; Sun, Jun4
2015-07-01
发表期刊DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
卷号117期号:2015页码:108-118
文章类型Article
摘要Biomass and grazing impact of three size fractions of mesozooplankton were investigated across a wide range of trophic conditions in northern South China Sea (SCS) during four seasonal cruises from July 2009 to May 2011. The grazing impact of mesozooplankton was determined by measurements of gut fluorescence and experimentally-derived gut clearance coefficients. In the northern SCS, the variation in mesozooplankton biomass was influenced by bottom-up effects. Due to riverine runoff to the shelf and winter mixing in oceanic areas, an increase in mesozooplankton biomass was observed in late spring corresponding to an increase in Chl a concentrations. However, because a significant portion of the Chl a came from pica-sized phytoplankton cannot be directly consumed by most mesozooplankton, especially in the oceanic waters during autumn and spring, the bottom-up effect was rather weak. Mesozooplankton consumed 0.7-215% of phytoplankton Chl a standing stocks daily, and it was higher in shallow shelf waters than in oceanic waters during spring and summer due to combined effects of mesozooplanIcton feeding behavior (higher herbivory in shelf waters) and phytoplanlcton composition (higher contribution of pico-sized phytoplankton in oceanic waters). If only the >2 mu m phytoplankton were considered, the grazing impact by mesozooplanlcton became substantial, reaching similar to 31% d(-1). Among the three size fractions of mesozooplanIcton, large-sized mesozooplankton (> 1000 mu m) dominated the total biomass and contributed more than 50% of the herbivory. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Mesozooplankton Biomass Grazing Impact Northern South China Sea Gut Pigment
DOI10.1016/j.dsr2.2015.02.026
收录类别SCI
语种英语
WOS记录号WOS:000357231100010
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/48982
专题海洋生态与环境科学重点实验室
作者单位1.State Ocean Adm, South China Sea Branch, South China Sea Marine Engn & Environm Inst, Guangzhou, Guangdong, Peoples R China
2.Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
4.Tianjin Univ Sci & Technol, Coll Marine Sci & Engn, Tianjin, Peoples R China
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Chen, Mianrun,Liu, Hongbin,Song, Shuqun,et al. Size-fractionated mesozooplankton biomass and grazing impact on phytoplankton in northern South China Sea during four seasons[J]. DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,2015,117(2015):108-118.
APA Chen, Mianrun,Liu, Hongbin,Song, Shuqun,&Sun, Jun.(2015).Size-fractionated mesozooplankton biomass and grazing impact on phytoplankton in northern South China Sea during four seasons.DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY,117(2015),108-118.
MLA Chen, Mianrun,et al."Size-fractionated mesozooplankton biomass and grazing impact on phytoplankton in northern South China Sea during four seasons".DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY 117.2015(2015):108-118.
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