About AKIYAMA SATOSHI
About 大阪環農水研
About YOKOMATSU HIROYUKI
About 大阪環農水研
About NAKAJIMA MASAKI
About 大阪環農水研
About water mass
About lowland
About environment of fishing grounds
About back filling
About water pollution
About anoxic water mass
About Osaka Bay
About dredging depression
About water pollution
About Marine pollution
About 浚渫窪地
About 周辺
About 海域
About 貧酸素水塊