Plankton community in the sea waters around Panjang and Pamujan Besar islands, Banten Bay

This study aims to analyze the plankton community in the sea waters around Panjnag and Pamujan Besar Islands. It was conducted for three months, from May to July 2019, at six locations around the islands. Analysis was carried out to estimate abundance and the diversity, evenness, and dominance indices. Based on the study, the observed phytoplankton consisted of 3 classes, i.e., Bacillariophyceae (30 genera), Cyanophyceae (2 genera), and Dinophyceae (5 genera). The most abundant genera were Chaetoceros sp, Spirulina sp and Rhizosolenia sp. Meanwhile, the zooplankton consisted of 8 classes, i.e., Bivalvia, Ciliata (6 genera), Malacostraca (13 genera), Gastropods, Polychaeta, Sarcodina (1 genus), Rotifera (1 genus), and Urochordata (1 genus), with Nauplius, Calanus, and Bivalve larvae as the most abundant biota. The abundance of phytoplankton and zooplankton varied, 38095-13038515 cells/m3 (phyto) and 4010-190475 inds./m3 (zoo), respectively. The diversity, evenness and dominance indices of the phytoplankton and zooplankton were 0.693-2.146, 0.694-1.00, 0.160-0.341, and 0.780-2.027, 0.275-0.861, 0.160-0.500, respectively. Based on the results, the diversity value is moderate with high evenness and no dominant genera.