Plankton community profile in silvofishery ponds

Abstract

The aim of research it was to analysis of the plankton community profile in silvofishery ecosystems. The research method used in this study is a descriptive method with research data collection using the concept of causal ex-pose facto design in 4 adaptive silvofishery ponds. The results showed that plankton in 4 research ponds was found in as many as 5 classes consisting of 15 genera of plankton. The plankton abundance in the ponds ranged from 2.50E+03-2.63E+06 cells/ml. The most plankton dominant was Chlorella sp. 2.63E+03 cell/ml and Oschillatoria sp. 6.33E+05 cell/ml. Plankton abundance by class was Chlorophyta 2.88E+06 cell/ml, Cyanophyta 6.83E+05 cell/ml, Dinoflagellates 1.95E+05 cell/ml, Chrysophyta 9.50E+04 cell/ml, and Protozoa 1.75E+04 cell/ml. Water quality conditions at the silvofishery pond site were pH 7.85, dissolved oxygen 12.25 mg/L, salinity 7 g/L, temperature 28.83°C, nitrate 1.00 mg/L, nitrite 0.05 mg/L, ammonia 0.08 mg/L, and phosphate 0.07 mg/L, overall the water quality parameters are still following water quality standards for fish farming. The conclusion from this analysis is that the most dominant type of plankton class in this adaptive silvofishery culture is Chlorophyta with the most dominant genus Chlorella sp. which has an abundance level far above another genus.