Effects of Pond Water Depth and Method of Aeration on Phytoplankton Communities in Macrobrachium rosenbergii Farming Ponds

Recently, profitable Macrobrachium rosenbergii farming has developed rapidly in Asia. The occurrence of cyanobacterial blooms is one the major environmental problems usually encountered freshwater prawn farms. This study investigated effects pond water depth and aeration mode on phytoplankton communities selected M. ponds China. We adjusted (pond depth: 1.2 m or 1.8 m; method aeration: surface both bottom) to compare analyze community structure characteristics between ecological m, bottom aeration) traditional ponds. Water quality parameters were compared six aquaculture systems, which measured situ lab. results showed that culture suppressed Cyanophyta abundance significantly increased numbers species leading a 30.43–136.84% increase number for with In all seasons, tended have decreased total nitrogen ammonia nitrogen, lower phosphorus reactive phosphate conclusion, should maintain deeper (1.8 m) higher N/P ratio (>3) promote diversity suppress blooms; applying optimized may resolve planktonic algae