Abstract
In a blackish lake, rich organic matters and nutrients are supplied from ariver, and salinity is provided from a sea. There exists a balanced ecosystem, and its stability greatly depends on the nutrient cycle. On the other hands, the matter cycle depends on the ecosystem. Therefore, it is important to understand the characteristics of the water qualities considering the ecosystem to manage and preserve the water environment in a blackish lake.
In this study, we evaluate the habitat environment for Corbicula japonica using its growth model. And, we analyze the seasonal and annual variations of water qualities, using a hydrodynamic model coupled with an ecological model to clarify the relation between thewater qualities and the amount of Corbicula Japonica.
