2022 Volume 78 Issue 2 Pages I_649-I_654
Catches of fish in Osaka Bay has declined sharply since the late 1990s. Off the coast of Kobe City, too, there have been poor catches in recent years in the springtime fishery of "Ikanago Ryo" and the seaweed cultivation famous for "Suma Nori". In this study, a social implementation aimed at improving the waterfront space and recovering fishery resources was carried out under the collaboration of four parties: a local environmental conservation activity group, a water right holder, a fishery cooperative, and a research institute. As a result, we confirmed the nutrient supply and biological flocking effects of the container filler. However, as the amount of nutrient elution decreased over time, it was suggested that maintenance work was necessary.
