Abstract

Yatsushiro Bay, a typical closed bay on the west of the Kyushu Island, is a sea area where a vast tidal flat develops. Recently, various environmental degradations are reported to occur in Yatsushiro Bay, as red tidal and anoxic water. In this study, the ecosystem formation process by recovery of shoreline, in which the aim is to establish the technology that can artificially restore the tidal flat and the shoreline in front of embankment development and to recover and maintain the ecosystem, was investigated in Yatsushiro Bay. About eight months have passed since shoreline was constructed; benthos species have increased by the quadruple or more. The effect in the future can be expected by recovery of shoreline.

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