Study of aquatic ecological regions using fish fauna and geographic archipelago factors

摘要: Abstract An evaluation of ecological integrity is required for ecosystem conservation and restoration. The region, or “ecoregion”, has been adopted as a unit geological area to enable comparison the different regions. delineation an region difficult in countries East Asia, including Japan because complex topographies (i.e., several peninsulas islands) fauna that are very finely delineated based on climate geology. Therefore, it important appropriately determine ecoregions when determining their biological comparing among other ecoregions. I attempted delineate Japanese archipelago similarities fish by integrating information was collected researchers national government local governments. In addition, quantitative analyses investigate relationship between classification meteorological geographical factors were conducted discuss influence classifications. classified into 15 groups, results these grouped classifications closely related process which formed, ocean current its coastal waters, connection water system glacial age. Our findings suggest rivers within areas from those might have our potential depending characteristics watershed, such scale floodplain, river conflicts, formation process. By applying classification, we able make watersheds managing environments establishing policies.