Study Of Macrozoobentos Diversity In The Secondary Flow Of The Bengawan Solo River

  • Agung Pamuji Rahayu Lamongan Islamic University
  • Norma Aprilia Fanni Lamongan Islamic University

Abstract

Macrozoobenthos are invertebrate animals that live on the bottom of the waters which are often used as an estimator of the imbalance in the physical, chemical, and biological environment of the waters. Polluted waters will affect the survival of macrozoobenthos organisms because they are easily affected by the presence of physical and chemical pollutants. This study aims to determine the diversity, abundance of macrozoobenthos as well as diversity index, evenness index, dominance index, and density index which can be used as a reference for determining the water quality of the Bengawan Solo River secondary flow in Tunjungmekar Village, Kalitengah District, Lamongan Regency. Researchers found 6 classes of gastropods, 1 class of bivalves, 1 class of crustaceans, 1 class of malacostraca, 1 class of clitella, from 10 types of macrozoobenthos. It is known that the diversity values ??of stations 1,2,3 and 4 are included in the low category, this is because the value of each station is <1. The evenness value of stations 1,2,3 and 4 is included in the low category because each station is <1. From the results of the dominance analysis, the highest value is at station 1 with a total of 0.59 because there are freshwater snail species that dominate at station 1. The highest value density is at station 1 with a value of (40.49) while the lowest value is at station 4 with a value of (2, 83). The highest density value is at station 1 with a value of (40.49) while the lowest value is at station 4 with a value of (2.83). The result water quality temperatures between 28.5-300C, brightness ranges from 19-21 cm, depth ranges from 0.5 - 2 m, the salinity of 0‰, pH from 8.5-8.8, dissolved oxygen (DO) ranged from 2.2 to 3.3 mg/L, nitrite ranged from 0.09-0.20 mg/l. The results of water quality measurements are still in good condition for the life of aquatic biota.

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Author Biographies

Agung Pamuji Rahayu, Lamongan Islamic University

Aquatic Resources Management Program Study, Faculty of Fisheries

Norma Aprilia Fanni, Lamongan Islamic University

Aquatic Resources Management Program Study, Faculty of Fisheries

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Published
2022-02-15
How to Cite
RAHAYU, Agung Pamuji; FANNI, Norma Aprilia. Study Of Macrozoobentos Diversity In The Secondary Flow Of The Bengawan Solo River. Advances in Tropical Biodiversity and Environmental Sciences, [S.l.], v. 6, n. 1, p. 22-28, feb. 2022. ISSN 2622-0628. Available at: <https://ojs.unud.ac.id/index.php/atbes/article/view/82034>. Date accessed: 08 nov. 2024. doi: https://doi.org/10.24843/ATBES.2022.v06.i01.p05.
Section
Articles