Modelling of Individual Species of Phytoplankton in a Lake under Artificial Destratification

Abstract

A numerical model has developed to simulate water quality and algal species composition in a lake. As artificial destratification is widely used in the lakes, a bubble plume model has incorporated with the ecological model to simulate the dynamic responses of individual species under artificial mixing. Ecological model predicts concentrations of phosphate-phosphorus, ammonia nitrogen, nitrate nitrogen, dissolved oxygen and pH, which may have significant effect on the growth of certain species. Model was validated using data of U Lake (Japan).