Arthropod Diversity in Seagrass Ecosystems in the Eastern part of Tarahan Island, Serang Regency, Banten

Abstract

Tarahan Island, Banten, has the potential for coastal ecosystem wealth, including seagrass beds and various other biodiversity. However, scientific information on the diversity of Arthropods and the condition of seagrass there is still minimal, so researchers conducted research on information on the diversity of Arthropods and the condition of seagrass on Tarahan Island. Through a purposive sampling technique considering the density and distribution of seagrass in the research area, the results of the study showed the presence of a dominant seagrass species Thalassia Hemprichii with a seagrass ecosystem health index (IKEL) score of 0.25 indicating very poor conditions due to low seagrass cover and density. The Shannon-Wiener arthropod diversity index (H') of 3.07 indicates high diversity with the dominance of the Gastropoda class (15 species). However, the uniformity index (E = 0.11) indicates non-uniform species diversity, compared to the dominance index (D) which justifies the dominance of Gastropoda over other classes.