Carbon biomass,carbon-to-chlorophyll a ratio and the growth rate of phytoplankton in Jiaozhou Bay,China

查看全文 作　　者：Shujin [1,2,3]GUO;Zengxia [1,2,3]ZHAO;Junhua [1,2,3]LIANG;Juan [1,2,3]DU;Xiaoxia [1,2,3,4]SUN

机构地区：[1]Jiaozhou Bay National Marine Ecosystem Research Station,Chinese Academy of Sciences,Qingdao 266071,China;[2]Laboratory for Marine Ecology and Environmental Science,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;[3]Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China;[4]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Oceanology and Limnology》索引2021年第39卷第4期,共15页

基　　金：Supported by the National Natural Science Foundation of China(Nos.31700425,91751202);the External Cooperation Program of Chinese Academy of Sciences(No.133137KYSB20200002);the Taishan Scholars Project to Song SUN。 摘　　要：Carbon biomass,carbon-to-chlorophyll a ratio(C꞉Chl a),and the growth rate of phytoplankton cells were studied during four seasonal cruises in 2017 and 2018 in Jiaozhou Bay,China.Water samples were collected from 12 stations,and phytoplankton carbon biomass(phyto-C)was estimated from microscope-measured cell volumes.The phyto-C ranged from 5.05 to 78.52μg C/L in the bay,and it constituted a mean of 38.16% of the total particulate organic carbon in the bay.High phyto-C values appeared mostly in the northern or northeastern bay.Diatom carbon was predominant during all four cruises.Dinoflagellate carbon contributed much less(<30%)to the total phyto-C,and high values appeared often in the outer bay.The C꞉Chl a of phytoplankton cells varied from 11.50 to 61.45(mean 31.66),and high values appeared in the outer bay during all four seasons.The phyto-C was also used to calculate the intrinsic growth rates of phytoplankton cells in the bay,and phytoplankton growth rates ranged from 0.56 to 1.96/d;the rate was highest in summer(mean 1.79/d),followed by that in fall(mean 1.24/d)and spring(mean 1.17/d),and the rate was lowest in winter(mean 0.77/d).Temperature and silicate concentration were found to be the determining factors of phytoplankton growth rates in the bay.To our knowledge,this study is the first report on phytoplankton carbon biomass and C꞉Chl a based on water samples in Jiaozhou Bay,and it will provide useful information for studies on carbon-based food web calculations and carbon-based ecosystem models in the bay. 关键词：PHYTOPLANKTON carbon biomass carbon-to-chlorophyll a(C꞉Chl a)ratio growth rates Jiaozhou Bay

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Carbon biomass,carbon-to-chlorophyll a ratio and the growth rate of phytoplankton in Jiaozhou Bay,China

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