Fluctuation Effect of Dissolved of TAN (Total Ammonia Nitrogen) on Diatom Abundance in Intensive Shrimp Culture Ponds

Abstract TAN (Total Ammonia Nitrogen) is the accumulation of nutrient elements needed by plankton to grow in intensive shrimp farming ponds. The purpose this study was determine relationship effect concentration fluctuations on diatom abundance culture cycle. This research conducted during one cycle at PT. Menjangan Mas Nusantara, Pandeglang, with its variables dominance percentage and level solubility results showed that period dominated predominant diatom, chlorophyceae, chyanophyceae classes. cultivation has a graph similarity dissolved fluctuation pond. itself described continue increase age. Statically, between ponds modeled regression equation y = 2.210 + 32.411 (R 2 0.88; α0.00). conclusion obtained from study, strongly influenced as main element significance 88%.