Abstract
Abstract Macrozoobenthos live sedentary at the bottom of the waters with slow movements and a relatively long-life cycle, and they are able to respond continuously to changes in water conditions. The aim of this study is to analyze macrozoobenthic ecology as an indicator of water quality at Margagiri-Grenyang coastal waters, Banten Bay. The study was carried out for 5 months from July-November 2022 with six stations. Macrozoobenthos samples were taken using Petersen Grab, and water quality was measured in situ and ex situ. Data analysis was conducted to estimate abundance, biological indices, PCA, similarity index, and AMBI and M-AMBI. The macrozoobenthos at the study site were composed of six phyla (Molusca, Annelida, Echinodermata, Arthropoda, Hoplonemertea, and Nemertea). The highest density of the marozoobenthos was found in July (3178 ind/m2), with moderate diversity (H′) (2.535–2.758), medium-high evenness (E) (0.742–0.833), and low dominance (C) indices (0.157–0.241). Based on PCA, the distribution of macrozoobenthos is influenced by turbidity and TSS parameters. AMBI and M-AMBI analysis showed that macrozoobenthos undisturbed and indicated by good-high water quality.
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