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Picoplankton and virioplankton abundance and community structure in Pearl River Estuary and Daya Bay, South China
Ni, Zhixin1; Huang, Xiaoping1; Zhang, Xia1; xphuang@scsio.ac.cn; zhangxia@scsio.ac.cn
2015
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
Volume32Pages:146-154
AbstractBy using flow cytometry techniques, we investigated the abundance and composition of the heterotrophic prokaryotes, virioplankton and picophytoplankton community in the Pearl River Estuary and Daya Bay in the summer of 2012. We identified two subgroups of prokaryotes, high nucleic acid (HNA) and low nucleic acid (LNA), characterized by different nucleic acid contents. HNA abundance was significantly correlated with larger phytoplankton and Synechococcus (Syn) abundance, which suggested the important role of organic substrates released from primary producers on bacterial growth. Although LNA did not show any association with environmental variables, it was a vital component of the microbial community. In contrast to previous studies, the total virioplankton concentration had a poor relationship with nutrient availability. The positive relationship between large-sized phytoplankton abundance and the V-I population confirmed that V-I was a phytoplankton-infecting viral subgroup. Although the V-II group (bacteriophages) was dominant in the virioplankton community, it was not related with prokaryotic abundance, which indicated factors other than hosts controlling V-II abundance or the uncertainty of virus-host coupling. With respect to the picophytoplankton community, our results implied that river input exerted a strong limitation to Syn distribution in the estuary, while picoeukaryotes (Euk) were numerically less abundant and showed a quite different distribution pattern from that of Syn, and hence presented ecological properties distinct from Syn in our two studied areas. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
DepartmentLMB
KeywordPicoplankton Virioplankton Community Composition Flow Cytometry
Subject AreaEnvironmental Sciences & Ecology
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Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/14820
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding Authorxphuang@scsio.ac.cn; zhangxia@scsio.ac.cn
Affiliation1.[Ni, Zhixin
2.Huang, Xiaoping
3.Zhang, Xia] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China
4.[Ni, Zhixin] South China Sea Environm Monitoring Ctr, State Ocean Adm, South China Sea Branch, Guangzhou 510310, Guangdong, Peoples R China
5.[Ni, Zhixin] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ni, Zhixin,Huang, Xiaoping,Zhang, Xia,et al. Picoplankton and virioplankton abundance and community structure in Pearl River Estuary and Daya Bay, South China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2015,32:146-154.
APA Ni, Zhixin,Huang, Xiaoping,Zhang, Xia,xphuang@scsio.ac.cn,&zhangxia@scsio.ac.cn.(2015).Picoplankton and virioplankton abundance and community structure in Pearl River Estuary and Daya Bay, South China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,32,146-154.
MLA Ni, Zhixin,et al."Picoplankton and virioplankton abundance and community structure in Pearl River Estuary and Daya Bay, South China".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 32(2015):146-154.
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