Long-term changes of community in the estuarine ecosystem of the Ohashi River connecting between Lake Shinji and Lake Nakaumi
| Project/Area Number |
20681001
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Shimane University |
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Principal Investigator |
KURATA Kengo 島根大学, 汽水域研究センター, 准教授 (40325246)
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| Project Period (FY) |
2008 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 汽水域 / 感潮河川 / ヤマトシジミ / ホトトギスガイ / 底生生物群集 / 個体群動態 / 気候変動 / 河川改修 / 生態系影響評価 / 大橋川 / 生物群集 / 長期的変動 / 地球温暖化 |
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| Research Abstract |
Population dynamics of the brackish water bivalves Corbicula japonica and Musculista senhousia were investigated in the Ohashi River, Shimane Prefecture. Monthly samplings were conducted at the selected stations from the upstream (Lake Shinji) to the downstream (Lake Nakaumi). Saline water intruded into the deeper zone of the Ohashi River, which corresponded with distribution and expansion of M. senhousia. Distribution of C. japonicawas expanded towards the downstream at the flood. Density of C. japonica population at the upstream station of the Ohashi River tended to be small in winter and to be large in summer from November 2005 to March 2013.
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Report
(6 results)
Research Products
(20 results)
