厦门港海水光合色素特征

Photosynthetic pigments in seawater of Xiamen Harbor

应用反相高效液相色谱 (RP HPLC)方法分析测定了冬季厦门鼓浪屿水文观测站两周内不同潮位海水中的光合色素的组成与含量 ,包括多甲藻素、1 9 己酰基氧化岩藻黄素、硅甲藻黄素、硅藻黄素、玉米黄素、叶绿素a、脱镁叶绿素a、β 胡萝卜素等 .同时还实测了小球藻、金藻、盐藻、甲藻、角毛藻、螺旋藻等多个实验室培养藻种的色素组成 .数据表明 ,不同种类的藻类具有不同的色素组成特征 ,从海水中光合色素的分析数据可推测其浮游植物主要种类组成情况 .潮汐的水动力情况在色素组成变化上有所反映 ,表明港内外的浮游植物组成分布有梯度存在 ,且在特征上有所不同 .

Photosynthetic pigments in seawater samples of Xiamen Harbor in winter have been measured by HPLC, and pigments of some cultured species of phytoplankton have also been measured, such as Chaetoceros sp., Prorocentrum cassubicum,Isochrysis galbana, Dunaliella salina, Spirulina platensis, Synechococcus sp. The data of about 15 kinds of pigments are obtained, including chloropyllide a, chlorophyll c, peridinin, 19'-butanoyloxyfucoxanthin, fucoxanthin, 19'-hexanoyloxyfucoxanthin,violaxanthin, diadinoxanthin, diatoxanthin, lutein, zeaxanthin, chlorophyll b, chlorophyll a, phaeophytin a, beta-carotene. The abilities of pigments indicating phytoplankton in seawater of Xiamen Harbor are discussed and results shows that tidal current is a most important controller to abundance and specific composition of phytoplankton and pigments indicate that diatom and chrysophyceae are the main phytoplankton.