ANALISIS KEANEKARAGAMAN MAKROZOOBENTOS SEBAGAI BIOINDIKATOR KUALITAS PERAIRAN SUNGAI BRANTAS DI DAERAH INDUSTRI PABRIK TAHU KABUPATEN KEDIRI SEBAGAI SUMBER BELAJAR BIOLOGI

Besides being able to damage water quality, tofu factory industrial waste also affects the composition of the creatures in it. However, the changes are hardly revealed. The purpose of this research is to identify the diversity of macrozoobenthos as a bioindicator of the Brantas river water qualityin Kediri. This type of research is quantitative descriptive, notably to obtain facts and data about the diversity of macrozoobenthos types. The samples are taken from four stations with three repetitions. The data obtained are density, relative density, abundance, relative abundance, and diversity index based on Shanon-Wiener diversity index; and chemical conditions (pH, BOD5, and COD); physics (depth, water brightness, water temperature and current speed). All data are analyzed using correlation analysis. The results of this research indicate that of the seven species found, the lowest diversity index is Tubifex sp, while the highest one is Sulcospira hainanesis. Hopefully, the results of this research can be a further study of biological learning resource analysis