湛江海域浮游藻类生态及其多样性

Phytoplankton Ecology a and Its Djversity in Zhangjiang Seawaters

近岸海域富营养化导致浮游藻类大量繁殖，影响海域生系统平衡。对湛江海域浮游藻类种类组成、数量分布、群落结构等进行冬、夏二季调查，得出湛江海域以硅藻门（Ｂａｃｉｌｌａｒｉｏ－ｐｈｙｔａ）为主要优势类群。夏季种类多样性高于冬季；赤潮生物种种类、数量均夏季高于冬季。

Eutrophication of coastal waters would induce brust growth of phytoplankton and dis-trub the balance of seawater ecosystem. Research on the species composition, amount distribu-tion,diversity,etc., of phytoplankton of Zhangjiang seawaters in winter and summer seasons.And known Bacillariophyta was the dominant group.Diversity of phytYtoplank ton in summerwas higher than in winter, and the species and amounts of red tide algae in summer was higherthan in witet.