QUALITY OF CIKAWUNG RIVER WATER BASED ON PHYTOPLANKTON DIVERSITY Mulyani, L.S.(a*), Amarulla, Y.(a), Wahjuningsih, Sri.(a), Muthmainnah, R(a).
(a)Program Studi Pendidikan Biologi, Institut Pendidikan Indonesia Garut
Jalan pahlawan sukagalih no 32 Garut 44151
*lenibiostkip[at]gmail.com
Abstract
This research aims to determine the quality of cikawung river water based on phytoplankton diversity conducted in April-May 2019. This research uses descriptive method, with quantitative approach. The sample taken was 10% of the length of the Cikawung river, which is 5 km divided into 3 stations. The sampling technique is done by purposive sampling. The quality of the waters of the Cikawung river can be seen from the diversity index, evenness index and phytoplankton dominance index. The results of the research show that the diversity value is low to moderate. The evenness value is in stable condition. While the dominance index show as labile condition or under ecologys pressure. Broadly speaking, the quality of the waters of the cikawung river based on the diversity index is included in the heavily polluted category.
Keywords: Phytoplankton; diversity; evenness; dominance; cikawung river
