Macrozoobenthos Community Structure in Situ Cileunca, Pangalengan District, Bandung Regency, West Java

This research aims to determine the structure of the macrozoobenthos community which includes variety, diversity, uniformity, coefficient of similarity and the Family Biotic Index (FBI) macrozoobenthos as well as the physical and chemical parameters of the waters and to determine the pollution status of Situ Cileunca waters. The research was conducted in Situ Cileunca, Bandung Regency, West Java from January to February 2021. The research method used a survey method. The method used in data collection is purposive sampling by determining 5 stations and 4 times. Data analysis in this research uses descriptive analysis. The results showed that the lowest average Biochemical Oxygen Demand (BOD5) value was found at station 4 of 8.90 ±4.92 mg/L and the highest average BOD5 value was found at station 5 of 12.99 ± 6.60 mg/L. There are three species of macrozoobenthos that live in the waters of Situ Cileunca, namely Pomacea canaliculata, Filopaludina javanica and Anodonta woodiana. Macrozoobenthos abundance ranges from 400 - 704 ind/m2. The diversity index of macrozoobenthos is included in the low category, ranging from 0.17 to 0.28. The uniformity value ranged from 0.36 - 0.59 which was classified as moderate in all including except at station 4 which was classified as low. The lowest average similarity coefficient was found between stations 3 and 5 was 0.13 and the highest average similarity coefficient between stations 4 and 5 was 0.30. The index value of the FBI macrozoobenthos ranged from 6.05 to 6.18 with a rather poor category. The pollution status of Situ Cileunca is moderately polluted because the BOD5 value is categorized as moderately polluted, the diversity (H') is classified as heavily polluted and the FBI value is in the rather poor category.