Diversity of bivalves on the north coast of Lamongan, East Java, Indonesia

Abstract. Atlanta V, Ambarwati R, Rahayu DA, Mujiomo N. 2022. Diversity of bivalves on the north coast Lamongan, East Java, Indonesia. Biodiversitas 23: 4263-4271. Biodiversity in Indonesian waters is very abundant, one which bivalves. This study aimed to analyze diversity, abundance, uniformity and dominance bivalves, as well habitat profile North Coast Lamongan. Bivalves sampling was carried out at Kutang Beach Joko Moersodo Beach. There were three research stations consisting sub-stations each beach. At sub-station, it taken plot 5×5 m. Each contained five subplots 1×1 The profiles studied temperature, pH, salinity, turbidity type substrate. Samples identified based morphological characters. data obtained analyzed descriptive qualitatively. results revealed that found Lamongan included Anadara antiquata, Vasticardium elongatum, Donax faba, Asaphis sp., Gari elongata, Serratina perplexa, Gafrarium pectinatum, Heterocardia gibbosula, Marcia hiantina, japonica, opima, Meretrix Venerupis aspera. index value bivalves’ diversity 1.13-2.201. follows: temperature 29.3-31.7ºC, salinity 25-32 ppt, pH 7.59-8.18, 10.6-17.3 NTU dominant substrate sandy mud. more commonly beaches with dense mangroves.