Development of Hydrodynamic-Primary Production coupled Model on the whole Area of the Seto Inland Sea and its Application to the Dispersion Process of Marbled Flounder Larvae.

In this study, a hydrodynamic-primary production coupled model as the water environmental evaluation tool of the Seto Inland Sea has been developed. To verify the model, a simulation was executed. The result showed that the flow field could be reproduced by the model. However concentration fields related with primary production were not well reproduced. The model was applied to the dispersion process of marbled flounder larvae in the Harima nada. The simulation results showed that after 30days floating the larvae mainly distributed around of the Iejima Island, eastward and southward of the Awaji Island and the Bisan seto. Moreover, the larvae that distributed on the Okayama area at the beginning of March came from the spawning ground which located eastward of the Shoudo Island and southwestward of the Awaji Island.