| Project/Area Number |
23657017
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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 |
Ecology/Environment
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TANI Yukinori 静岡県立大学, 環境科学研究所, 准教授 (10285190)
NAITOH Hirotaka 静岡県立大学, 環境科学研究所, 助教 (30254262)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 地球温暖化 / 二酸化炭素吸収 / 微生物ループ / 食物連鎖 / ピコ植物プランクトン / シネココッカス / 原生生物 / 鞭毛虫 / 佐鳴湖 |
|---|
| Research Abstract |
In Lake Sanaru, Shizuoka Prefecture, Japan, annual cyclic blooms of Synechococcus spp. (small planktonic algae) occur during summer. We studied on environmental condition favorable to growth of Synechococcus and grazing loss of Synechococcus by protists. We finally discussed the reduction of atmospheric CO2 concentration through food chain between Synechococcus which fixes CO2 through photosynthesis and heterotrophic flagellates which prey on Synechococcus. Growth of Synechococcus was stimulated by nitrogen supply. Grazing loss of Synechococcus by the flagellates agreed well with production of Synechococcus. Atmospheric CO2 thus would be effectively consumed through the food chain between Synechococcus with nitrogen supply and heterotrophic flagellates.
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