Biodiversity and community structure of phytoplankton in Domas coastal waters, Banten Bay, Indonesia
H Thoha1, N Fitriya1, Sulistiono2, A Asriansyah2, DY Wulandari2, A Ervinia2, F Baihaqi2, E Srimariana3, B Subchan3, RE Arhatin3, T Hestirianoto3

1Research Center for Oceanography, The National Research and Innovation Agency (BRIN), Jl. Pasir Putih No. 1, Ancol Timur, Jakarta, 14430, Indonesia
2Department of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University, Bogor, 16680, Indonesia
3Department of Marine Science and Technology, Faculty of Fisheries and Marine Sciences, IPB University, Bogor, 16680, Indonesia
Corresponding Author: onosulistiono[at]gmail.com

Abstract

Domas^s coastal waters are located in the eastern part of Banten Bay. These water areas are fishing grounds for various fish species and other local fishermen^s marine biotas. This study examines phytoplankton^s diversity and community structure in the Domas coastal waters. It was conducted for 6 months, from August 2021 to January 2022. A sampling of the phytoplankton and water quality measurement were carried out monthly at six stations. Identification was carried out in the laboratory, and data analysis was carried out to estimate abundance, diversity, evenness, and dominance indices. Based on observations, phytoplankton in these waters consisted of two classes, namely Bacillariophyceae (23 genera) and Dinophyceae (8 genera). The phytoplankton genera found in abundance were Skeletonema sp, Thalassionema sp, and Chaetoceros sp. The number of taxa and abundance varied, 6-21 and 147996-68308959 cells/m3, respectively. The diversity, evenness, and dominance indices differed, 0.520-1.908, 0.183-0.705, and 0.231-0.830, respectively. Based on the results of these calculations, it can be conveyed that the diversity, uniformity, and dominance of phytoplankton in these waters are classified as moderate.

Keywords: Phytoplankton, Domas Coastal, Banten Bay

Topic: Marine Resources, and Conservation