IDENTIFICATION SPECIES, DIVERSITY AND STRUCTURE OF COMMUNITY OF PLANKTON IN TWO OXBOW LAKES, JAMBI PROVINCE, INDONESIASiswanta Kaban, M. Edi Armanto, M. Rasyid Ridho and Poedji L. Hariani
The Sipin and Teluk Lakes are two of oxbow lakes located in Jambi Provinces, Indonesia. Both of them useful for many activities such as agriculture, fisheries, transportation etc. for using monitoring aquatic diversity is thus essential. It has a variety of productive habitats that support the availability of fish resources, The research described in this paper was conducted in March and June 2018 with the purpose of assessing the diversity, plankton communities as an indicator to monitor and manage the lakes. The planktons were collected and analyzed in the Laboratory of research instituted for inland fisheries and extension. Plankton sampling using by a net Nu, 25, to calculate the community structure and diversity of plankton used by ecological indices (abundance, dominance, constancy and ecological significance) and diversity indices (Shannon and Simpson diversity). In Sipin lake, a total of 65 species of plankton where are 48 species of phytoplankton and 17 species of zooplankton were recorded, Phacus (Mastigopora) has the highest abundance. While, in Teluk lake a total of 59 species of plankton, 39 species of phytoplankton and 17 species of zooplankton were recorded, Ullotrix (Chlorophyta) has the highest abundance. Generally, diversity index in two oxbow lake categorized as moderated polluted. However, Teluk lake has more potential for fish resources development better than Sipin Lake if viewed from composition and species of plankton.