BIOLOGOCAL INTERACTION EXERTED ON MATERIAL CYCLE IN TIDAL FLAT

Material cycle in tidal flat was investigated from the viewpoint of biological interaction with experimental microcosm system. The experiment, in this paper, was executed using macrophytes and macrobenthos living in tidal flat, which is located in Tokyo Inner Bay. As the result, it was clarified that the living things with different life style exerted the influence on the concentration of dissolved nutrient salts in water under the individual biological treatment process in each kinds. Moreover, for the reason of coexistence due to living things with different life style, the dissolved nutrient salts in water layer was suppressed into 1/4 times as much as the concentration produced by a single kind. It was considered, in conclusion that the utilization of biological interaction depending on various living things is important for purification of water quality in tidal flat.