Abstract
Peat swamp has very high conservation value, one of its plankton, because plankton is one of the determinants of water fertility. This research was conducted in January - April 2020. This study aims to determine the type and abundance of plankton in peat swamps in Ogan Komering Ilir Regency. Location is determinate by purposive sampling method based on environmental characteristics. Plankton sample identification was carried out at the Laboratory of the Faculty of Agriculture, Muhammadiyah University, Palembang. The results obtained were 86 species of plankton consisting of 4 classes of phytoplankton (Bacillariophyceae, Chloropyceae, Cyanophyceae and Eugleanophyceae and 13 classes of Zooplankton (Dinoflagellata, Rotifera, Mastigophora, Granuloreticulosea, Appendicularia, Branchiopoda, Mysidacea, Tintinnidiidae, Sarcodina, Maxillopoda, Ostracoda and Monogononta). The abundance of OKI peat swamp plankton is classified as low ranging from 32.72 - 170.3 individuals/litter. The diversity index is moderate category, ranging from 1.49 - 2.56. The uniformity index ranges from 0.56 to 0.86. This indicates that between stations have uniformity, and the difference is not so striking. The dominance index ranges from 0.7 to 0.9 indicates that there are plankton species that dominate other types. Overall the types of plankton that dominate peat swamps are from the Bacillariophyceae class.
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