The Mizkan Yokawa Biotope is situated on the premises of a food-processing plant and continues to sustain the environment of SATOYAMA. Five principal entities comprised of citizens, businesses, specialists and the like have been involved with this biotope for ten years, starting from the planning stage. The objective of this study is to identify the roles played by these five principal entities in their oral history. First, the citizens’ group has been administering their operation with autonomy and sense of responsibility. Second, the food manufacturer has successfully realized a compatible co-existence of the environmental symbiosis that utilizes the biotope with the maintenance of a hygienic environment required of a food-processing plant, while providing support to the citizens’ group. Third, the major construction company carried out planning and establishment of the biotope to utilize and maintain the existing natural environment, with the involvement of the citizens’ group. Fourth, the biological system consultants have been involved with the project from the planning stage and are conducting a monitoring survey each year, which is utilized for the adaptive management. Fifth, the museum has been provided personnel training of the citizens group and to support the administration of the group.
