Species composition and biodiversity of plankton in some mariculture areas at barru district indonesia

Mariculture is overgrowing along with the decrease in a marine catch. It is expected to be the largest supplier of marine and fishery sectors. Improvement effort of mariculture activities will be further encouraged including efforts to optimize its other roles as conservation areas. This study is conduct in Barru waters from February 2017 to November 2018. The purpose of this study is to determine biodiversity, composition, abundance of plankton. Methods used for this study was observation at the mariculture’s site, and then the unidentifiable samples would be taken to the laboratory for further identification. The conclusion are 1) The composition of the phytoplankton found the diatom class (Bacillariophyceae) consisting of 29 species and Dinophyceae 4 species. Zooplankton dominated by crustacean class composed of 10 species, and other species is from Cirripedia class, one species. 2). The highest value of the diversity index found at station II (floating net cage location) that is 2.82. For the zooplankton which only found at seaweed had a diversity index of 2.26. The highest value of uniformity index for phytoplankton found in station II, that is 0.94. While for zooplankton in observation station, value index is of 0.94 which indicate that value tends to stabilize.