Potential of Gastropods as Bioassessment of Anthropogenic Litter Pollution in Urban Lake

This study on Anthropogenic Litter (AL) was conducted at 5 stations in Situ Gintung, South Tangerang, Indonesia, during the dry and rainy seasons between May to July 2015 and February to April 2016, respectively. The objectives were to determine the correlation between temporally and spatially distributed AL items with gastropods and bioassessment of lake from AL. Generally, the AL consisted of plastic products, rubber, cans, paper, and glass, where plastic bags were discovered more during the two seasons at insignificantly different quantities (p>0.05) and all stations at significantly different amounts (p<0.05). The total number and percentage AL cover with gastropods had a low linear regression value and increased by more than 80% during the rainy season. Meanwhile, the difference in the number of AL was insignificant by season but significant based on the station. Although AL had little effect on gastropods, the number of individual organisms decreased as the number and percentage of cover increased and vice versa. The results suggest that variation of presence of gastropods can be used as a bioassessment inorganic pollution of lake ecosystems.