Evaluation of effects of global warming and instream structure on freshwater fish in the World Natural Heritage ? Shiretoko, Japan.
| Project/Area Number |
19510017
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Meijo University |
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Principal Investigator |
TANIGUCHI Yoshinori Meijo University, 理工学部, 准教授 (30316145)
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| Co-Investigator(Kenkyū-buntansha) |
河口 洋一 九州大学, 工学研究院, 助教 (20391617)
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| Co-Investigator(Renkei-kenkyūsha) |
KAWAGUCHI Yoichi 徳島大学, 工学部, 准教授 (20391617)
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| Project Period (FY) |
2007 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | オショロコマ / 河川鬱閉度 / 砂防ダム / 治山ダム / 昇温 / 温暖化 / 個体群密度 / スリット化 / 河畔林 / 砂防ダム・治山ダム / 地球温暖化 / 河川性サケ科魚類 / イワナ / 群集生態学 / 気候変動 / 治山・砂防ダム / シマフクロウ / 淡水魚類群集 / 小規模河川内構造物 / 世界自然遺産 / 知床 / 生態学 |
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| Research Abstract |
Presence of approximately 200 dams was confirmed in the study streams and Dolly Varden density was lower in high dam-density streams. Because dam density was positively correlated with maximum summer water temperatures, construction of dams caused stream temperature increase and possibly shrunk the thermal habitat of the fish. Also, number of days exceeding water temperature of 22℃ was greater in the high dam-density streams compared to the low-dam density ones.
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Report
(6 results)
Research Products
(21 results)
