Pigment characterization for the 2011 bloom in Qin-huangdao implicated“brown tide”events in China孔凡洲,于仁成等:渤海秦皇岛沿岸海域近年来发生大规模藻华,对贝类养殖业构成巨大危害,但藻华原因种(一种细胞大小约2μm的微藻)一直未能鉴定。通过对2011年该海域藻华期间浮游植物色素的分析发现,高含量的19-丁酰氧基岩藻黄素是最为突出的特征色素,据此判断藻华原因种应为海金藻类 KONG Fan Chau, Yu Rencheng et al .: Large-scale algae bloom occurred in the coastal waters of Qinhuangdao of the Bohai Sea in recent years, posing a great hazard to shellfish farming. However, algae bloom Cause species (a cell size of about 2μm microalgae) has not been identified. Based on the phytoplankton pigment analysis during the algae blooming in 2011, it was found that the high content of 19-butyryloxy fucoxanthin is the most prominent characteristic pigment. Therefore,