2014 Fiscal Year Final Research Report
Flow reduction impact on mountain ecosystem caused by small hydropower plant
| Project/Area Number |
24651026
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental impact assessment/Environmental policy
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 小水力 / 渓流 / 環境影響 / 底生動物 / 維持流量 |
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| Outline of Final Research Achievements |
Due to the recent energy problems in Japan, renewable energy, especially micro-hydropower generation has attracted much attention. However, there are few researches about impacts of micro-hydropower generation plants on mountainous riverine ecosystems in Japan. In the present study, we evaluated how water abstraction associated with micro-hydropower plants change the community structure of benthic animals, riverine birds, and the physical habitats in four mountain streams.
1. Community structure of benthic animals in all habitats didn’t change significantly by flow reduction in the Kaji River, but some changed in the Kamo River. That difference of impact was caused by the structures of each intake weir. 2. In Kawatsuki River, fast spots and species which like fast spot were decreased in impact reach.3. In Midori River, riverine birds are more influenced significantly in winter than in summer by flow reduction.
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| Free Research Field |
河川環境
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