Distribution of Macrozoobenthos Species and Communities in Bulaksetra Estuary

Abstract

Distribution of macrozoobenthos species and communities is influenced by several factors, one of the very influential factor is the environment. This research aims to study the diversity and distribution patterns of macrozoobenthos and the environment conditions that influence it. Samples were taken from 31 research stations that spread along the Bulaksetra estuary. Determination of sampling points is done by randomly making zoning point so that the sample points can represent the characteristics of the entire Bulaksetra estuary zone. The data analysis used in this study were the species composition formula, individual abundance, Shannon Wiener diversity index, uniformity index, and Simpson dominance index. The results showed that 12 species of macrozoobenthos consist of 9 genus, 6 families, 4 classes and 2 phylum, with species composition dominated by Faunus ater 64.04%, average individual abundance of 239.95/m2, moderate diversity, moderate uniformity, and dominance of biota types faunus ater is classified as moderate but for other types classified as low.