| 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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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 小水力 / 渓流 / 環境影響 / 底生動物 / 維持流量 / 減水 / カワガラス / 小水力発電 / 生態系 / ステップ＆プール河道 / 水生昆虫 / 加地川 |
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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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