Influence of the northern Yellow Sea Cold Water Mass on picoplankton distribution around the Zhangzi Island,northern Yellow Sea  

作　　者：ZHAO Li ZHAO Yanchu DONG Yi ZHAO Yuan ZHANG Wuchang XU Jianhong YU Ying ZHANG Guangtao XIAO Tian 

机构地区：[1]CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China [2]Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China [3]University of Chinese Academy of Sciences, Beijing 100864, China [4]Tianjin Bohai Sea Fisheries Research Institute, Tianjin 300457, China [5]Iiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

出　　处：《Acta Oceanologica Sinica》2018年第5期96-106,共11页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract Nos 41306160;the NSFC-Shandong Joint Fund for Marine Science Research Centers under contract No.U1606404;the Strategic Priority Research Program of the Chinese Academy of Sciences under contract No.XDA11020103.1

摘　　要：Picoplankton distribution around the Zhangzi Island（northern Yellow Sea）was investigated by monthly observation from July 2009 to June 2010.Three picoplankton populations were discriminated by flow cytometry,namely Synechococcus,picoeukaryotes and heterotrophic prokaryotes.In summer（from July to September）,the edge of the northern Yellow Sea Cold Water Mass（NYSCWM）resulting from water column stratification was observed.In the NYSCWM,picoplankton（including Synechococcus,picoeukaryotes and heterotrophic prokaryotes）distributed synchronically with extremely high abundance in the thermocline（20 m）in July and August（especially in August）,whereas in the bottom zone of the NYSCWM（below 30 m）,picoplankton abundance was quite low.Synechococcus,picoeukaryotes and heterotrophic prokaryotes showed similar response to the NYSCWM,indicating they had similar regulating mechanism under the influence of NYSCWM.Whereas in the non-NYSCWM,Synechococcus,picoeukaryotes and heterotrophic prokaryotes exhibited different distribution patterns,suggesting they had different controlling mechanisms.Statistical analysis indicated that temperature,nutrients（NO3^and PO4^3-）and ciliate were important factors in regulating picoplankton distribution.The results in this study suggested that the physical event NYSCWM,had strong influence on picoplankton distribution around the Zhangzi Island in the northern Yellow Sea.Picoplankton distribution around the Zhangzi Island（northern Yellow Sea）was investigated by monthly observation from July 2009 to June 2010.Three picoplankton populations were discriminated by flow cytometry,namely Synechococcus,picoeukaryotes and heterotrophic prokaryotes.In summer（from July to September）,the edge of the northern Yellow Sea Cold Water Mass（NYSCWM）resulting from water column stratification was observed.In the NYSCWM,picoplankton（including Synechococcus,picoeukaryotes and heterotrophic prokaryotes）distributed synchronically with extremely high abundance in the thermocline（20 m）in July and August（especially in August）,whereas in the bottom zone of the NYSCWM（below 30 m）,picoplankton abundance was quite low.Synechococcus,picoeukaryotes and heterotrophic prokaryotes showed similar response to the NYSCWM,indicating they had similar regulating mechanism under the influence of NYSCWM.Whereas in the non-NYSCWM,Synechococcus,picoeukaryotes and heterotrophic prokaryotes exhibited different distribution patterns,suggesting they had different controlling mechanisms.Statistical analysis indicated that temperature,nutrients（NO3^and PO4^3-）and ciliate were important factors in regulating picoplankton distribution.The results in this study suggested that the physical event NYSCWM,had strong influence on picoplankton distribution around the Zhangzi Island in the northern Yellow Sea.

关 键 词：picoplankton northern Yellow Sea Cold Water Mass thermocline Zhangzi Island 

分 类 号：Q178[生物学—水生生物学]