DEVELOPMENT OF AN EVALUATION METHOD FOR CONSERVATION PRIORITIES OF SMALL BORDER ISLANDS

Abstract

 Border islands are politically and economically important, but sufficient monitoring and maintenance systems have not been established. In this study, we created a database concerning the geographical and physical characteristics of border islands and developed indicators assessing conservation priorities. In the database creation process, we compiled quantitative data, such as the "amount of territorial sea loss due to the disappearance of border islands (groups), " based on geographic information. In evaluating conservation priorities, we conducted more detailed analysis and ranking by adding vulnerability indicators such as elevation and volume to border remote islands deemed to have high conservation priority based on territorial sea loss and island group area. Finally, we identified some islands requiring urgent conservation efforts, such as Okinotori Island.