Density and Diversity of Plankton Population in Eastern, Central & Western Parts of Bandar Abbas

Forthy three genera of phytoplankton and 22 population of zooplankton were distinguished in eastern, central and western coastal area ol'Bandar Abbas during one year study from June 1993 to July 1994. From the mentioned groups of planktons 35, 40 and 43 genera of phytoplankton and 18, 20 and 19 population 0f zooplankton were identified in eastern, central and western areas respectively. Western area had the most diversity and the highest density. Chrysophycea diatoms, had highest contribution in all areas. Western part showed highest diversity in winter with H = 3.98. Phylum Pyrophyta, Cyanophycea and Chlorophycea have had lowest contribution respectively. Cyanophycea were observed during warm months of July-Aguest, While other phytoplanktons had (heir highest density during cold months. Zooplanktons were mainly Copepoda, Nauplius, Lamellibranchia. Prosobranchia, Tintinnidae and Foraminifera eggs and larvae of Gastropoda, Echinodermata and fishes were observed in all areas in low densities during few months. No significant difference was observed in density and diversity of zooplankton in all areas.