著者

藤野 毅 ニン ウィリ 野本 健志 山田 明弘

出版者

公益社団法人 土木学会

雑誌

土木学会論文集B1(水工学) (ISSN:2185467X)

巻号頁・発行日

vol.70, no.4, pp.I_1291-I_1296, 2014 (Released:2015-05-18)

参考文献数

10

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This topic presents the effect of radioactive pollution in river on Stenopsyche sp. (Trichoptera: Stenopsychidae) at upstream and immediately downstream of Mano dam in Fukushima Prefecture, Japan. Stenopsyche sp. has high productivity with bivoltine life cycle among all invertebrate species, and can be a good indicator for any kind of environmental pollutions. The total radioactive cesium is always detected from Stenopsyche sp. with the order of 4,000 Bq/kg. A cause of high radiation intensity is due to very high intensity from the fine particulate organic matter (FPOM). However, its biological half-life was only about 6 hours for non-winter generation. Thus, FPOM is mostly excreted without assimilation.