THE USE OF TROPHIC DIATOM INDEX TO DETERMINE WATER QUALITY IN THE UPSTREAM OF CILEUNGSI RIVER, WEST JAVA
Abstract: Human activities in
the watershed in the upstream of Cileungsi river have tendency to bring high
organic materials to the river which determines the aquatic condition of the
river. The decreased water quality is event because of the organic materials in
the upstream of Cileungsi river would bring negative impacts towards water
condition in the downstream. This study was conducted in determining the water
quality in the upstream of Cileungsi river, using Trophic Diatom Index (TDI).
The sampling was taken in four different sites in the river and sub-river of
the upstream of the river. The sampling of ephilitic diatom organisms were
taken by scraping the surface of substrate rocks using brush then soaked the
materials into a sampling bottle which hasbun containing destile water. Diatom
density was measured using census method according to standard of APHA 2012.
The TDI score ranged from 48.25 to 60.47, indicating that the water quality of
upstream of Cileungsi river is classified from good until poor condition.
Keywords: Bioindicator;
Cileungsi River Indonesia; Trophic Diatom Index; Water Quality
Author: Nuralim Pasisingi,
Niken TM Pratiwi, Majariana Krisanti
Journal Code: jpperikanangg140033