Zhang Aijun and Zhang Hongliang, Branch of North China Sea, S.O.A

Abstract

On the base of the continuous on-spot zooplankton inspection about noctiluca red tide in Dayang Bayou in 2000 and in Bayu Quan in 2001,this article analyzes the diversification of the species composition, density distributing and community structure of the zooplankton.The result indicates that the nocatiluca red tide caused the zooplankton species ,density and the community diversity reduce evidently,and it also bring some disasrous effects for marine ecosystems and fishery productivity.

keywords: noctiluca, red tide, zooplankton