Pages 221-234
It is known that an artificial lagoon has some functions of the water purification. The purpose of this study is to clarify the water purification mechanism of the artificial lagoon using an ecosystem modelling technique. In the second report, we developed an ecosystem model for an artificial lagoon with reference to the results of field investigations at the artificial lagoon in Rinku park, which were described in the first report. This model consists of a pelagic ecosystem model and a benthic ecosystem model including seaweed and sessile animals. The results of the numerical experiments showed that the model can well simulate the seasonal variations of measured water qualities and the biomass of seaweed and sessile animals.
