Spacial-Temporal Characteristics of Dinoflagellate Cyst Distribution in Sediments of Busan Harbor

To describe dinoflagellate cyst distribution from Busan Harbor, eleven surface sediment samples and a vertical sediment sample were collected in 2003. Dinoflagellate cysts were identified 12 genera 22 species, and the total cyst concentrations varied from . The proportion of heterotrophic dinoflagellate cysts was higher in inner parts than in outer parts of the harbor, which reflects that water quality is worse in inner harborthan that in outer harbor. On the basis of the sedimentation rate of 2.0 mm/yr, total depth of the vertical core reflects marine environment far the past 260 years, where dinoflagellate cysts were identified 9 genera 18 species and the total cyst concentrations were . The cyst concentrations were low and the proportion of heterotrophic dinoflagellate cysts were incerased in the upper part from depth, which shows industrialization and urbanization in this study area.