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Riris Aryawati, T. Zia Ulqodry, Isnaini, Heron Surbakti
Jurnal Ilmu dan Teknologi Kelautan Tropis , Volume 13, pp 163-171; doi:10.29244/jitkt.v13i1.25498

Abstract: The Musi River is the largest and longest river in South Sumatra. The development of population activities in the Musi River Basin can affect river water quality and can cause pollution. The high level of industrial activity and households along the Musi River causes a decrease in environmental quality in the Musi River Basin. Based on this, further research is needed to determine the extent of pollution in the Musi River Basin. The purpose of this study is to assess saprobitas along the Musi River Basin based on SI (Saprobic Index) and TSI (Tropical Saprobic Index) values, and knowing the level of water pollution using saprobitas water assessment. This study uses plankton as the main material, namely water samples and plankton samples. This study uses an exploratory design with survey methods, and the determination of sampling stations by purposive sampling method. The results showed abundance of phytoplankton in the waters of the Musi River in the range of 123 - 2581 cells / liter or an average of 1397 cells / liter, the waters of the Musi River can be categorized as Oligotrophic waters with several station points that can be categorized as Mesotrophic waters. The Saprobic index in the waters of the Musi River ranges from 0.63 - 1, classified in the phases of the microbial, namely β-Mesosaprobic, so that the waters of the Musi River are classified as mild or low.
Keywords: survey / Saprobic Index / waters / Musi River Basin

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