Wahyu Isroni, Noorhidayah Binti Mamat, Andi Kurniawan, Fuad, Nurul Maulida, Anjas Sasana Bahri, Bagus Prasetyo Aji
Given the observed decline in water quality in the upstream region of the Brantas River, which passes through Batu City to Blitar, this study aims to use the abundance and diversity of macrozoobenthos as bioindicators for water quality assessment. Macrozoobenthos is analyzed with Shannon-Wiener’s index of abundance and diversity. The purpose of this research is to monitor the water quality conditions in the upstream region of the Brantas River. The results of this study showed a fairly even abundance value, with the lowest being 1.3% and the highest being 62.4%, while the macrozoobenthos diversity index obtained ranged from 1.28 to 2.02, which is included in the moderate diversity category. These results fall into mild to moderate pollution according to Shannon-Wiener’s index. The results of water quality measurements when compared to Indonesia water quality standards for fish farming in PP RI no. 22 of 2021, temperature, DO (Dissolved Oxygen), pH, and COD (Chemical Oxygen Demand) meet the quality standards, while BOD (Biochemical Oxygen Demand) and TSS (Total Suspended Solids) do not meet the quality standards. ©2025 The authors.
Coastal and Marine Research Centre, Brawijaya University, Malang, 65145, Indonesia; Faculty of Science, Institute of Biological Science, University of Malaya, Kuala Lumpur, 50603, Malaysia; Malang Fisheries Science College / STIP, Malang, 65141, Indonesia
