Haifeng Gu and Dongzhao Lan, Institute of Oceanography, Xiamen , 361005

Abstract

Dinoflagellate is the main algae which result in red tide. Many species of dinoflagellate can produce resting cysts and form sediment. When the condition become suitable, the cysts can germinate and result in red tide a second time. Its difficult to detect the red tide of dinoflagellate because the period of this kind of red tide is quite short. We can forebode red tide by studying the species and amount of dinoflagellate cysts. Its difficult to identify the species and amount of dinoflagellate cysts unless they are separated and concentrated. We studied the living dinoflagellate cysts in West Harbor of Xiamen using sodinium tungstate method, and found that there are diverse living dinoflagellate cysts, but all are in small amounts.