STUDI BIOEKOLOGI PERAIRAN SUNGAI BATU BATU DAN SUNGAI WALANAE UNTUK MENDUKUNG KEGIATAN BUDIDAYA DI DANAU TEMPE KAB.SOPPENG DAN WAJO PROP.SULAWESI SELATAN

Abstract

Study aim was to determine bioecology aspect of Batu-Batu and Walanae River for supporting aquaculture acitivies at Tempe Lake. Batu-Batu and Walanae Rivers were 2 out of 8 river where affected water quality of Tempe Lake. Research was conducted for 7 months and sampling was conducted for 5 times. Physical water quality parameters were measured in situ while chemical, primary productivity and nutrients parameters were analysed at laboratorium. Results showed that range of temperature and pH were 30.5 – 31.7oC and 7.49 – 7.90, respectively. Range of phytoplankton and zooplankton abundance account for 512 – 2220 cell/L and 40 – 140 ind/L, repectively. Consentration nitrate was range 0.0015 – 0.0452 mg/L, while consentration phosphate was range of 0.015 – 0.1340 mg/L Chlorophyll a concentration was range 0.007 – 2.550 mg/L and primary productivity had range account for 0.10 – 0.89. Based on water quality parameter concluded that Batu-Batu and Walanae River had a significant effect on abundance of phytoplankton and primary productivity. Phosphate and nitrate concentration significantly affected on growth of phytoplankton and zooplankton, so this could be supported for aquaculture activities. Keywords: Temperature, pH, nitrate, phosphate, Walanae and Batu-Batu River and Tempe Lake.