EXPERIMENTAL STUDY ON THE HABITABLE SEAWALL FOR FISH IN URBAN CANAL AREA

Abstract

 In the canal located in urban area, the bottom layer becomes poor oxygen due to the influence of the saline wedge and thermocline. The purpose of this study was to clarify the effect of habitable seawall for fish in the canal area. We set up a simple basket to be an evacuation site for fish in the surface and bottom layer of canal, and investigated the fish in the basket. As a result, when the bottom layer became poor oxygen, the bottom fish evacuated to the surface layer, and when the poor oxygen dissolved, it moved to the bottom layer. It was suggested that by setting the habitat of the bottom fish on the surface layer, it functions as an evacuation site for fish.