IDENTIFIKASI KEANEKARAGAMAN GASTROPODA DI PESISIR BARAT DAN TIMUR PULAU TARAKAN DAN POTENSINYA SEBAGAI BAHAN AJAR PADA PEMBELAJARAN BIOLOGI DAN POTENSINYA SEBAGAI BAHAN AJAR PADA PEMBELAJARAN BIOLOGI
Tarakan is an island in northern Indonesia with an area of 657.33 km2 and has a coastal area consisting of mangrove forests and beach areas. This study assessed the diversity of gastropods on Tarakan Island’s west and east coasts.The research was conducted in three research locations, namely (1) KKMB, (2) Mamburugan, and (3) Amal Beach, using a quantitative approach with a random sampling method. The results showed that there were 35 species of gastropods belonging to 12 families, where the diversity index at there research sites ranged from 2.658-1.597 belonging to the medium category, the uniformity index at three research sites obtained the axact value of 1,000 which indicates that the ecosystem as in a relatively stable condition, the dominance index at first and second research sites ranged from 0.430-0.325 (medium category) and at third research sites of 0.117 (low category). The highest abundance value at the first research site was 0.314 ind/m2, namely the Assimenia brevican species; at the second research site, it was 0.403 ind/m2, namely the Cerithium corallum spesies; and at the third research site,, it was 0.001 ind/m2, namely the Clithon castaneus species. The results of this study have the potential as teaching material for biology learning at the high school level class X on Animalia subject matter, including for the college level invertebrate study as well as other related materials.