Internal Production Control by Sediment Treatment in Eutrophicated Lakes using Experimental Mesocosm System

Abstract

Investigation of internal production control by sediment treatment was conducted using experimental mesocosm system. As results, it was made clear that 1) conversion rate from N,P to COD indicated the limiting factor to internal production is controlled by seasonal change and cultivation period, 2) DAF+MgO treatment promotes internal production and DAF+CaO treatment is most effective to decrease internal production, and 3) all sediment treatment technology indicated different succession of conversion rate from Lake Tega and some effect to natural ecosystem is suggested.