Institution: | 1.Department of Natural Environmental Studies, Graduate School of Frontier Sciences,University of Tokyo,Kashiwa-shi,Japan;2.Center for Spatial Information Science,University of Tokyo,Kashiwa-shi,Japan;3.Japan Bird Research Association,Fuchu City,Japan;4.Fuji Iyashinomori Woodland Study Center,University of Tokyo,Minamitsuru-gun,Japan;5.Information Technology Center,University of Tokyo,Bunkyo-ku,Japan;6.Department of Regional Development Studies,Toyo University,Bukyo-ku,Japan |