Spatiotemporal variations of phytoplankton in the Taiwan Strait using lipid biomarkers and the potential influencing factors  

作　　者：Zitong Liu Shuqin Tao Xiang Ye Aijun Wang Chang Ran Shuilan Wu Zhen Jiang Junwen Wu 

机构地区：[1]Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention/Institute of Marine Sciences,Shantou University,Shantou 515063,China [2]Third Institute of Oceanography,Ministry of Natural Resources,Xiamen 361005,China [3]Fujian Provincial Key Laboratory of Marine Physical and Geological Processes,Xiamen 361005,China [4]Observation and Research Station of Island of Coastal Ecosystem in the Western Taiwan Strait,Ministry of Natural Resources,Xiamen 361005,China

出　　处：《Acta Oceanologica Sinica》2024年第11期68-87,共20页海洋学报(英文版)

基　　金：The National Key Research and Development Program of China under contract No.2019YFE0124700;the Scientific Research Foundation of Third Institute of Oceanography,MNR under contract Nos 2019018 and 2019017;the National Natural Science Foundation of China under contract Nos 42076038,U22A20585 and 41776099;the Guangdong Basic and Applied Basic Research Foundation under contract No.2021A1515011886;the STU Scientific Research Start-Up Foundation for Talents under contract No.NTF18011.

摘　　要：The biological pump,driven by phytoplankton production and death,plays a crucial role in the ocean’s sequestration of atmospheric CO_(2).In particular,marginal seas with high primary productivity show a significant capacity for carbon fixation.Variations in phytoplankton biomass and community structure are key factors influencing the efficiency of the marine biological pump.The Taiwan Strait(TS)is a unique shallow conduit that connects the East China Sea(ECS)and the South China Sea(SCS),which are subject to seasonal monsoons and episodic events(e.g.,typhoons and floods).Thus,its planktonic ecosystem is significantly influenced by physical processes such as strong ocean currents,coastal upwelling and river discharge,resulting in noticeable seasonal variability.In this study,we examined spatiotemporal patterns of phytoplankton biomass and community structure using phytoplankton-sourced biomarkers from suspended particles in surface waters across all four seasons from 2019 to 2020 in the TS.The findings highlight notable seasonal disparities in phytoplankton biomass,with spring and summer exhibiting significantly higher levels compared to autumn and winter.In order to determine phytoplankton ecosystem responses to various physical and biological processes on a seasonal scale,we used Empirical Orthogonal/Eigen Function(EOF)analysis to investigate the covarying spatiotemporal patterns of:marine-sourced biomarkers and terrestrial-sourced biomarkers in surface suspended particles,a biomass indicator(Chl a),water-mass indicators[sea surface temperature(SST),sea surface salinity(SSS),nutrients],and a hydrodynamic indicator[total suspended solids at surface/bottom water,(TSS_S and TSS_B)].The results identified six physical-biological coupling modes that influence seasonal variations in marine phytoplankton ecosystems within the energetic strait system.Additionally,an in-depth understanding of the coupling between physical process and lipid biomarker signals from suspended particles in the contemporary marine environment

关 键 词：lipid biomarkers phytoplankton biomass community structure physical processes the western Taiwan Strait 

分 类 号：P73[天文地球—海洋科学]