Distribution of picoplankton in the northeastern South China Sea with special reference to the effects of the Kuroshio intrusion and the associated mesoscale eddies
Li, JJ; Jiang, X; Li, G; Jing, ZY; Zhou, LB; Ke, ZX; Tan, YH; tanyh@scsio.ac.cn
2017
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
卷号589页码:1-10
摘要We investigated picoplankton distribution patterns and environmental variables along an east-to-west transect in the northeastern South China Sea (SCS) during late winter 2016, giving us the opportunity to examine the impacts of the Kuroshio intrusion and the associated eddies. The results indicated that the subsurface (50-75 m) phytoplankton biomass chlorophyll (Chl a) maximum (SCM) disappeared and was replaced by higher Chl a in the middle part of the transect due to the impacts of the Kuroshio intrusion and mesoscale eddies. Both flow cytometry and pyrosequencing data revealed that picoplankton abundance and community structure were significantly influenced by perturbations in complex physical processes. Picoeukaryotes represented most of the total phytoplankton biomass, and their maximum abundance (>10(4) cells mL(-1)) occurred within cyclonic eddy-affected regions (Stations 11 and 12), whereas the abundance of Prochlorococcus was the lowest in these regions. Prochlorococcus showed a higher abundance in the Kuroshio-affected area, while Synechococcus was mostly distributed at the upper well-lit depths, with its maximum abundance observed in surface waters (0-30 m) adjacent to the cyclonic eddy center. Heterotrophic bacteria (HBA) displayed high abundance along the transect, consistent with the total phytoplankton biomass. Phylogenetic analysis revealed 26 bacterial phyla, with major components belonging to Proteobacteria, Cyanobacteria, Actinobacteria, and Bacteroidetes, as well as SAR406. Notably, relatively more Rhodobacterates, Flavobacteriales, Alteromonadales, and Vibrionales that were distributed in surface waters of the cyclonic eddy center were specifically associated with the phytoplankton (mainly picoeukaryotes) bloom. Our study highlights the impacts of the Kuroshio intrusion in regulating the microbial ecology of the northeastern SCS and the potential coupling between phytoplankton and bacteria. (C) 2017 Elsevier B.V. All rights reserved.
部门归属[Li, Jiajun; Jiang, Xin; Li, Gang; Zhou, Linbin; Ke, Zhixin; Tan, Yehui] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China; [Jing, Zhiyou] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Li, Jiajun; Jiang, Xin] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Li, Jiajun; Jiang, Xin; Li, Gang; Zhou, Linbin; Ke, Zhixin; Tan, Yehui] Guangdong Prov Key Lab Appl Marine Biol, West Xingang Rd 164, Guangzhou 510301, Guangdong, Peoples R China
关键词Picoplankton Bacteria Community Structure Kuroshio Intrusion Mesoscale Eddy South China Sea
资助项目LMB
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16302
专题中科院海洋生物资源可持续利用重点实验室
通讯作者tanyh@scsio.ac.cn
推荐引用方式
GB/T 7714
Li, JJ,Jiang, X,Li, G,et al. Distribution of picoplankton in the northeastern South China Sea with special reference to the effects of the Kuroshio intrusion and the associated mesoscale eddies[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,589:1-10.
APA Li, JJ.,Jiang, X.,Li, G.,Jing, ZY.,Zhou, LB.,...&tanyh@scsio.ac.cn.(2017).Distribution of picoplankton in the northeastern South China Sea with special reference to the effects of the Kuroshio intrusion and the associated mesoscale eddies.SCIENCE OF THE TOTAL ENVIRONMENT,589,1-10.
MLA Li, JJ,et al."Distribution of picoplankton in the northeastern South China Sea with special reference to the effects of the Kuroshio intrusion and the associated mesoscale eddies".SCIENCE OF THE TOTAL ENVIRONMENT 589(2017):1-10.
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