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中文摘要：
于2007年3—4月在黄海中部海域采用流式细胞术研究了春季水华过程中聚球藻、微微型真核浮游生物和异养细菌的生物量变化。聚球藻和微微真核型浮游生物的生物量与叶绿素a浓度变化基本呈现相反的趋势，在水华前期较高，水华期迅速下降，直至水华后期又有所升高。异养细菌在整个水华过程中变化较小，生物量在水华期最高，与水柱叶绿素a浓度呈极显著正相关（r=0．319，p〈0．01）。水华期这三类微微型浮游生物对浮游植物总碳生物量的贡献很低。纤毛虫和鞭毛虫捕食可能是导致聚球藻和微微型真核浮游生物在水华期生物量降低的主要原因。
英文摘要：
Temporal variability of Synechococcus, picoeukaryotes and heterotrophic bacteria biomass during the three spring blooms in 2007 were investigated in the Yellow Sea, China by flow cytometry. Synechococcus and picoeukaryotes biomass were highest during pre-bloom, and decreased sharply during bloom period. Heterotrophic bacteria biomass varied less severely during the cruise, with highest biomass in bloom period. Synechococcus and picoeukaryotes showed an opposite trend with water chl a variation, while heterotrophic bacteria had a positive co-relation with chl a. Ciliates and heterotrophic nanoflagellates grazing were the possible cause of the decrease in Synechococcus and picoeukaryotes biomass during spring bloom.
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