INVENTARISASI FITOPLANKTON PADA KOLAM BUDIDAYA AIR TAWAR DI IBAT PUNTEN, KOTA BATU SEBAGAI SUMBER BELAJAR

Freshwater Aquaculture Pond is a plot of land that is used to hold a certain amount of fresh water intended for raising fish. In the process of cultivation can not be separated from biotic and abiotic factors where these two factors are interrelated to the survival of fish. One example of an organism that plays an important role in the cultivation process is plankton. Plankton is an organism that hovers on the surface of the water and also functions as a primary producer for aquatic ecosystems. Broadly speaking, plankton is divided into 2 namely phytoplankton and zooplankton. Phytoplankton have a role as the first food-producing organisms in the food chain cycles. This study aims to inventory the types of phytoplankton in laughter aquaculture ponds located at IBAT Punten, Batu City. Sampling uses a purposive sampling method in which there are 3 stations, 1 pool station that is connected to the water inlet, station 2 pool mid and station 3 pool connected to the water exit. The results of this study were 5 phyla with an average abundance of Ind/l as follows: Bacillariophyta/Diatom 520 Ind/l, Chlorophyta 2813 Ind/l, Cyanophyta 524 Ind/l, Euglenophyta 120 Ind/l, and Pyrrophyta 337 Ind/l