The distribution patterns and biomass of bivalves in Segoro Tambak estuary, Sedati, Sidoarjo, East Java

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Abstract

Indonesia's marine waters have a variety of flora and fauna species that live and associate therein. This study used an observation method with a descriptive analysis. The results showed that the bivalvia distribution pattern in Segoro Tambak Estuary looked diverse with a distribution index value of <1 which was in the range of 0.3 - 0.4. The highest average bivalve biomass was temporally at 2.02 ton/km2 in March, and the lowest biomass was 0.95 ton/km2 in January. The highest total average density was 6 ind/10m2 in March and the lowest was 3 ind/10m2 in February. Low wind and current speeds in March caused the highest density and biomass. The content of the organic matter was the following: BOD in the range of 33.38 to 53.89 mg/l from the threshold of <20 mg/l and COD in the range of 242.6-643.11 mg/l from the threshold of 80 mg/l. This showed very high values and far exceeded the threshold, but bivalves can still live in these waters because bivalves are aquatic bioindicators. The bivalve life of Segoro Tambak Estuary is also supported by muddy substrate conditions that are suitable for bivalve life.

Original languageEnglish
Article number012040
JournalIOP Conference Series: Earth and Environmental Science
Volume236
Issue number1
DOIs
Publication statusPublished - 1 Mar 2019
Event1st International Conference on Fisheries and Marine Science, InCoFiMS 2018 - East Java, Indonesia
Duration: 6 Oct 2018 → …

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