About KANAYA GEN
About 東北大 大学院理学研究科
About KANAYA GEN
About KIKUCHI EISUKE
About 東北大 東北アジア研セ
About eutrophication
About water area
About benthos
About ecosystem
About lagoon
About estuary
About river
About bottom sediment
About brackish water sediment
About organic substance
About zoobenthos
About hydrogen sulfide
About iron sulfide
About reduction(reaction)
About phytoplankton
About biogenic residue
About detritus
About 井土浦
About 蒲生潟
About brackish water area
About 七北田川
About 名取川
About sulfate reduction
About Marine pollution
About Ecosystems
About 富栄養化
About 汽水域
About 生態系