Substances Transported by the Ishikari River and Seasonal Water Quality Changes in the Sea Near the Estuary

摘要

In considering environmental management of the coastal sea, it is important to understand the influence of various materials discharged from a river. Although the sea and the river basin often are studied separately, it is necessary to regard both areas as a single unit and to clarify the cycle of water, sediment, nutrients, etc. over a wide area.