Research on Hydraulics of Migration Route of Aquatic Animals

Dear Colleagues,

For the preservation of aquatic habitats in rivers, the formation of various flows with complex riverbed configurations should be required. While a river with a simple trapezoidal cross-section can be constructed as a channelized river for flood control, it is difficult to maintain its corresponding habitat, including spawning, growing, refuge, etc. For multi-aquatic animals to migrate upstream and downstream, many hydraulic drop structures are obstacles. The fish passage might help the migration route around the drop structure. The migration route in the fish passage should be kept under a wide range of discharges. In normal stages, the flow passing through the fish passage should be oriented to multi-aquatic animals as a migration route. In this Special Issue, research on the hydraulics of the migration route of aquatic animals is requested. In addition, research on the improvement of river environment, new approaches to fish passage, the evaluation of refuge region for aquatic animals, and problems regarding river configuration and drop structure is welcome. Many activities on these topics might help with the preservation of habitat for aquatic animals.

Prof. Dr. Yasuda Youichi
Guest Editor

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