Identification of Plankton in the Tabalong Kiwa River, Tabalong Regency, South Kalimantan Indonesia

The Tabalong Kiwa River is located in the northern part of Tabalong Regency, South Kalimantan, with upstream in the Meratus Mountains. The Tabalong Kiwa River has important ecological value, because it supports biodiversity, including aquatic flora and fauna typical of South Kalimantan. Plankton diversity in the Tabalong Kiwa River is still limited. This research aims to identify plankton species in the Tabalong Kiwa River, Tabalong Regency. Sampling will be carried out in the Tabalong Kiwa River, Tabalong Regency. The research parameters are Abundance (cells/L), Diversity Index (H'), Uniformity Index (E), Dominance Index (D). Identification of plankton in the Tabalong Kiwa River, Tabalong Regency, namely phytoplankton in all locations, shows low values between 0.1527 to 0.1626, which indicates that there are no species that dominate in the extreme and the plankton community is relatively stable, as well as a Uniformity Index (E) which is close to 1, indicating an almost even distribution of species. Keywords: Plankton, River, Tabalong Kiwa