Analysis of Pelecypoda Ecology Index in Rancabuaya Beach Garut District

Abstract

This study aims to determine the Pelecypoda species and Pelecypoda Ecological Index values include diversity, abundance, evenness, dominance and density in Rancabuaya Beach Garut District. The method used is descriptive method with purposive sampling technique, Line transect and Quadrat transect. Sampling was carried out by dividing the study area into three observation stations totaling 90 samples. Observations were obtained, Pelecypoda species as many as 12 species including: Barbatia foliata, Antigona puerpera, Antigona materna, Anadara turonica, Cardita aviculina, Anodontia vesícula, Gafrarium pectinatum, Antigona puerpera, Antigona materna, Anadara turonica, Cardita aviculina, Anodontia vesicula, Gafrarium pectinatum, Anigontia edentpera, Antigona materna, Anadara turonica, Cardita aviculina, Anodontia vesicula, Gafrarium pectinatum, Anigontia edentperula, Anigontia edentula Septifer bilocularis, Tellina scobinata, Tridacna maxima, and Anadara antiquata. The results of the analysis of diversity index 0.0069-0.1596 are in the low category, an abundance index of 0.3-35.3% are in the average category enough, evenness index 0-0.0753 evenness is in a depressed condition, 0-0,12456 which is in the low category and the density index ranges from 0.1 to 13.2 is in the low category. This indicates the threat to the survival of Pelecypoda and the low quality of waters on the coast of Rancabuaya.