| Project/Area Number |
26740048
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental and ecological symbiosis
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| Research Institution | Public Works Research Institute |
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Principal Investigator |
Nagayama Shigeya 国立研究開発法人土木研究所, 土木研究所(つくば中央研究所), 研究員(移行) (70540558)
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| Research Collaborator |
TASHIRO Takashi
HARADA Morihiro
TAKAOKA Hiroki
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 地質 / 河川 / 生息場 / 魚類 / ダム / 土砂レジーム / 流域地質 / 魚類群集 / 河床環境 / 露岩化 / 河川地形 / ハビタット / 土砂輸送 / 土砂量レジーム |
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| Outline of Final Research Achievements |
We examined stream habitat structure and fish assemblage with reference to watershed geology and effects of check dam on them via sediment regime alteration. Streams with different watershed geology showed different habitat structures with different riverbed environments. The characteristics of habitat structures affected fish assemblages, probably leading to different fish assemblages associated with different geology. Habitat structure (channel-unit and substrate compositions) and fish assemblage of the downstream of check dam was altered, indicating potential loss of geology-related fish assemblages.
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