Monitoring campaign as ICM tools for Tokyo Bay

On 26 March 2003, the Tokyo Bay Renaissance Promotion Council, composed of six central government agencies and eight regional government bodies endorsed an “Action Plan for Tokyo Bay Renaissance”. Under the action plan, the monitoring campaign of bay environment has been started in 2008. Dissolved oxygen (DO), salinity, and temperature were monitored in sea area, chemical oxygen demand, temperature, and discharge were monitored in river area. These data sets show a detailed snap shot of hypoxic water occurrence in the inner part of the bay. A series of environment maps for Tokyo Bay have been published for sharing the data. For example, in 2012, goby census has been implemented to show importance of biological – environmental relations. Participants of the census are 240, and the more than 8,000 data of fished gobies has been corrected. It clearly shows relation between growth and special environment variation. From just few trial of the campaigns are not enough to answer all questions, nevertheless, these trials shows its importance and efficiency on bay environment monitoring and management as one of the ICM tools.