Net-phytoplankton communities in the Western Boundary Currents and their environmental correlations  

作　　者：CHEN Yunyan SUN Xiaoxia ZHUN Mingliang 陈芸燕;孙晓霞;朱明亮(Jiao Zhou Bay Marine Ecosystem Research Station, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100049, China;Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology Qingdao 266071, China)

机构地区：[1]Jiao Zhou Bay Marine Ecosystem Research Station, Chinese Academy of Sciences, Qingdao 266071, China [2]University of Chinese Academy of Sciences, Beijing 100049, China [3]Laboratory of Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China

出　　处：《Journal of Oceanology and Limnology》2018年第2期305-316,共12页海洋湖沼学报（英文）

基　　金：Supported by the “Strategic Priority Research Program--Western Pacific Ocean System” of Chinese Academy of Sciences(No.XDA11030204);the National Basic Research Program of China(973 Program)(No.2014CB441504);the CAS Interdisciplinary Innovation Team“Ocean Mesoscale Dynamical Processes and Ecological Effect”;the NSFC-shandong Joint Fund for Marine Ecology and Environmental Sciences(No.U1406403);the National Natural Science Foundation on of China Young Scientist Funds(No.41306111)

摘　　要：This study investigated net-phytoplankton biomass, species composition, the phytoplankton abundance horizontal distribution, and the correlations between net-phytoplankton communities and mesoscale structure that were derived from the net samples taken from the Western Boundary Currents during summer, 2014. A total of 199 phytoplankton species belonging to 61 genera in four phyla were identified. The dominant species included C limacodium frauenfeldianum, Thalassiothrix longissima, Rhizosolenia styliformis var. styliformis, Pyrocystis noctiluca, Ceratium trichoceros, and Trichodesmium thiebautii. Four phytoplankton communities were divided by cluster analysis and the clusters were mainly associated with the North Equatorial Counter Current(NECC), the North Equatorial Current(NEC), the Subtropical Counter Current(STCC), and the Luzon Current(LC), respectively. The lowest phytoplankton cell abundance and the highest T richodesmium filament abundance were recorded in the STCC region. The principal component analysis showed that T. thiebautii preferred warm and nutrient poor water. There was also an increase in phytoplankton abundance and biomass near 5°N in the NECC region, where they benefit from upwellings and eddies.This study investigated net-phytoplankton biomass, species composition, the phytoplankton abundance horizontal distribution, and the correlations between net-phytoplankton communities and mesoscale structure that were derived from the net samples taken from the Western Boundary Currents during summer, 2014. A total of 199 phytoplankton species belonging to 61 genera in four phyla were identified. The dominant species included Climacodium frauenfeldianum, Thalassiothrix longissima, Rhizosolenia styliformis var. styliformis, Pyrocystis noctiluca, Ceratium trichoceros, and Trichodesmium thiebautii. Four phytoplankton communities were divided by cluster analysis and the clusters were mainly associated with the North Equatorial Counter Current （NECC）, the North Equatorial Current （NEC）, the Subtropical Counter Current （STCC）, and the Luzon Current （LC）, respectively. The lowest phytoplankton cell abundance and the highest Trichodesmium filament abundance were recorded in the STCC region. The principal component analysis showed that T. thiebautii preferred warm and nutrient poor water. There was also an increase in phytoplankton abundance and biomass near 5~N in the NECC region, where they benefit from upwellings and eddies.

关 键 词：net-phytoplankton communities Westem Boundary Currents UPWELLING EDDIES fronts 

分 类 号：P[天文地球]