流込み式堰堤による発電取水が渓流生態系に及ぼす影響：溶存酸素濃度の連続観測による生態系代謝評価 [in Japanese] IMPACT OF INTAKING WATER DUE TO RUN-OF-RIVER HYDROPOWER DAM IN THE MOUNTAINOUS STREAM: EVALUATION OF ECOSYSTEM METABOLISM WITH COUTINUOUS MEASUREMENT OF DISSOLVED OXYGEN CONCENTRATION [in Japanese]
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The concepts of stream metabolism were adopted to clarify the impacts of run-of-river hydropower system on the stream ecosystem. We conducted a field survey with logging the continuous data of dissolved oxygen concentration above and below the hydropower dam. In order to estimate the primary production and the community respiration, the practical procedures were employed with collected data of dissolved oxygen concentration according to the Kayaba’s empirical model based on the Odum’s concept. As the results, daily gross production, community respiration and their ratio could be degenerated especially below the dam at low flow conditions. It was also clarified that the availability and limitation of the present method to adopt this kind of environmental impact assessment.
- Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 71(4), I_1129-I_1134, 2015
Japan Society of Civil Engineers