The Density of Anadara granosa in Tin Mining Area at Tanjung Gunung Seawaters, Bangka Island

Abstract

Tin mining activity has been for quite some time existed in Bangka Belitung, directed lawfully and wrongfully. In the first place, the tin mining activity happens just in the mainland however at this point has been extended to the coastal zone. As the effect, supporting ecosystems such as coral reefs, sea grasses, marine biotas, and mangrove ecosystem cannot play their role normally especially in Tanjung Gunung Waters, Central Bangka. One of biota living at coastal zone in tin mining area is a Anadara granosa. Blood clam (A. granosa) is a type of shellfish that has important economic value and has the potential to become one of the leading marine fisheries products. The research method used is purposive sampling with systematic random sampling. The result showed that the density of A. granosa was low abundant each stasions at Tanjung Gunung. Total Organic Carbon range 1,03-5,57%. Sand (80%), Silt (11,65%), Clay (8,35%). Based on the analysis, density of A. granosa has the correlation with sedimen type and water quality (Dissolved oxygen, Salinity, Temperatur, EH).