Authors : Endang Yuli Herawati; Sri Sudaryanti; Ekwan Nova Wiratno; Chandika Lestariaji; Aang Setyawan Anjasmara

Volume/Issue : Volume 9 - 2024, Issue 10 - October

Google Scholar : https://tinyurl.com/3w7hw8ya

Scribd : https://tinyurl.com/yc3u48fm

DOI : https://doi.org/10.38124/ijisrt/IJISRT24OCT1857

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Abstract : Periphyton is a biota that can adapt and develop well in rivers. Periphyton is an organism that lives attached to a substrate. The aim of this research is to analyze the correlation of periphyton with physicochemical parameters and see the types of periphyton, density, and dominance downstream of the Welang River. This research was conducted in August, September, and October 2024 in Downstream of Welang River, Kraton District, Pasuruan. Indonesia. Periphyton samples were taken by brushing the stone substrate and then identified under a microscope. The results of the research show that the composition of the periphyton consists of three divisions, namely the Chlorophyta, Cyanophyta, and Chrysophyta division, in the Chlorophyta division, 8 genera were found, Cyanophyta 2 genera and Chrysophyta 14 genera. What dominates the downstream waters of the Welang River is the Chrysophyta division, namely the genus Nitzchia sp. and Navicula sp. The density of Periphyton during the research was found to be moderate. The results of this research are dominant. The diversity index results are in the medium category. Meanwhile, the uniformity index is in the low category. Water quality generally has an average value in the optimum category, but the TSS parameter has a high value that exceeds the threshold. The results of the Canonical Correlation Analysis (CCA) analysis show that there is a low-moderate correlation between the abundance of periphyton and the results of the physical and chemical parameters of the waters.

Keywords : Chemical, Periphyton, Physical, Welang.

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