沿岸水域の管理 : Mussel Watch や堆積物分析による水の危険管理

概要

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The present paper shows the international activities of Mussel Watch and core sediment analysis projects, for the monitoring of chemical environment in coastal marine area. Marine pollution due to human activity has become to serious social problem especially in coastal areas. It is necessary to monitor the pollution in the areas to maintain the good quality of chemical envrionment. The following two projects have been proposed and promoted internationally. (a) Marine bivalves concentrate pollutants over their levels in environmental seawater. Environmental research has suggested that some bivalves may be valuable as sentinel organisms for indicationg the levels of pollutants in coastal seawater. The histrorical progress of Mussel watch project is shown in this paper, with some scientific comments for the project. (b) Marine sediments also concentrate pollutants. In various sites of the Seto Inland Sea and the Tokyo Bay, core sediments from 1 to 5m were sampled. And the sedimentation rates and sedimentary records of anthropogenic and background (base line) pollutant loads were determined by combining Pb-210 dating technique with chemical analyses of pollutants including selective chemical leaching technique. The changes with time in heavy metal loads into sediments and the mass balance of heavy metals were clarified, in the Seto Inland Sea and the Tokyo Bay areas.
社会・経済システム学会の論文
1986-11-01