Analysis of Watershed Conditions and Water Pollution Levels on the Diversity of Macrozoobenthos in Rivers, East Java Yasa Palaguna Umar1*, Bambang Susilo1, Adi Setiawan2, Fathia Auliarahma1, Adindah Haedriah1
1 Department of Biosystems Engineering, Faculty of Agricultural Technology
2 Department of Agricultural Cultivation, Faculty of Agriculture
Universitas Brawijaya, Jl. Veteran Malang, 65145
Abstract
Changes in land cover from natural vegetation to built-up areas can have a big impact on river water quality because it can be degraded due to changes in land use patterns in river basins when human activity increases. Therefore, to maintain river water quality, it is necessary to maintain good land cover quality. The decline in river water quality can have an impact on the living creatures in it, one of which is macrozoobenthos, which are animals that can be used as bioindicators of river quality. This study aims to assess the impact of land cover quality and water pollution levels on macrozoobenthos diversity in various rivers in East Java, including the Jabung River in Malang Regency and the Kungkuk River in Batu City. The method used is quantitative descriptive with analysis using the Land Cover Quality Index, Pollutant Index, Diversity Index, and Pearson Correlation test. Based on the analysis that has been carried out, the results obtained are that the land cover quality of the Jabung River watershed is poor, the water quality of the Jabung River using the Pollution Index method is lightly polluted while the biotilic index method is moderately polluted, the level of macrozoobenthos diversity in the Jabung River is low, and the quality of the cover land and the level of river water pollution have a strong negative but not significant effect on macrozoobenthos diversity.
Keywords: Diversity Index, Land Cover Quality Index, Pollution Index, Macrozoobenthos
