Effect of expansion of lotus vegetation on methane food web in a shallow lake
| Project/Area Number |
25440232
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Tohoku University |
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Principal Investigator |
SHIKANO SHUICHI 東北大学, 東北アジア研究センター, 准教授 (70154185)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 湖沼 / 安定同位体比 / メタン / ハス群落 / 食物網 / プランクトン / メタン酸化細菌 / 魚 |
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| Outline of Final Research Achievements |
In Lake Izunuma, a shallow lake in Miyagi prefecture, the expansion of lotus vegetation caused oxygen-depleted lake water recently. In the lotus vegetation, methane diffused into lake water from the sediments and was accumulated in the lower layers during summer period. From the bacterial community analysis using the environmental DNA, the methane oxidizing bacteria which could grow in lake water were detected, and the changes in bacterial community corresponded to methane concentration and water temperature. Since carbon stable isotope ratios of zooplankton and fishes were depleted during summer period, it is suggested that methane food web originated from biogenic methane and methane oxidizing bacteria may be expanding to lake water environments.
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Report
(4 results)
Research Products
(12 results)
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[Presentation] 伊豆沼におけるメタン食物連鎖2015
Author(s)
安野翔、鹿野秀一、嶋田哲郎、菊地永祐
Organizer
第９回伊豆沼・内沼研究集会
Place of Presentation
宮城県伊豆沼・内沼サンクチュアリセンター
Year and Date
2015-02-21
Related Report
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