Diversity, Abundance, And Utilization Of Bivalves On The South Coast Of Pamekasan, Madura Island, Indonesia

Bivalvia merupakan kelompok moluska yang meliputi remis, tiram, kerang, dan remis. Bivalvia memiliki peran penting baik secara ekonomi maupun ekologi. Penelitian ini bertujuan untuk menganalisis keanekaragaman dan kelimpahan bivalvia di zona pasang surut pantai selatan Pamekasan, Pulau Madura, Indonesia. Pengambilan sampel dilakukan pada saat air surut terendah dengan metode transek garis di empat stasiun penelitian yang terletak di Pantai Talang Siring dan sekitarnya. Identifikasi dilakukan berdasarkan ciri morfologi. Data dianalisis secara deskriptif-kuantitatif. Hasil penelitian menunjukkan bahwa di pantai selatan Pamekasan terdapat 21 spesies bivalvia yang tergolong dalam 13 genus dan 8 famili. Nilai indeks keanekaragaman sebesar 2,21 termasuk dalam kategori sedang. Hasil indeks komunitas bivalvia menyatakan bahwa stasiun 3 memiliki nilai keanekaragaman tertinggi di antara stasiun pengambilan sampel lainnya, yaitu sebesar 2,2. Nilai kelimpahan relatif tertinggi terdapat pada spesies Tellinides timorensis Lamarck 1818 sebesar 35,96%. Dari 21 spesies yang ditemukan di Pantai Talang Siring dan sekitarnya, sembilan di antaranya sering dimanfaatkan oleh penduduk setempat. Meskipun Pantai Talang Siring dikelola sebagai kawasan wisata, pantai ini merupakan habitat potensial bagi bivalvia.

Kata kunci : Ekosistem pesisir, organisme laut, Pantai Talang Siring, Tellinides timorensis

Bivalves are a group of mollusks that includes clams, oysters, scallops, and mussels. Bivalves have vital roles both economically and ecologically. This study aims to analyze the diversity and abundance of bivalves in the intertidal zone of south coast of Pamekasan, Madura Island, Indonesia. Sampling was carried out at the lowest tide using the line transect method at four research stations located at Talang Siring Beach and its adjacent areas. Identification was conducted based on morphological characteristics. The data were analyzed descriptive-quantitatively. The results showed that in south coast of Pamekasan there were 21 species of bivalves belonging to 13 genera and 8 families. The value of diversity index was 2.21 which included in the medium category. The results of the bivalve community index stated that the station 3 had the highest diversity value among other sampling stations, which was 2.2. The highest relative abundance value was found in the species Tellinides timorensis Lamarck 1818 which was 35.96%. Among the 21 species found at Talang Siring Beach and its adjacent areas, nine of them are frequently utilized by local people. Although Talang Siring Beach are managed as tourism area, this beach is a potential habitat for bivalves.

Keywords: Coastal ecosystem, marine organisms, Talang Siring Beach, Tellinides timorensis