Responses of the genetic diversity of forest communities to typhoon disturbances under the non-equilibrium canopy condition and development of their prediction
| Project/Area Number |
25850101
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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 |
Forest science
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| Research Institution | Mie University (2014-2015)
Hirosaki University (2013) |
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Principal Investigator |
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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 |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 台風撹乱 / 稚樹 / 個体群動態 / 反復ギャップ / 雄性繁殖量 / マイクロサテライトマーカー / ブナ林 / 遺伝的多様性 / 繁殖生態学 / 空間配置 / 繁殖量 / 非等方向性 / コシアブラ / 個体群構造 |
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| Outline of Final Research Achievements |
The census of saplings were performed for Fagus crenata, Acer japonicum, and A. micranthum. The recruitment rates of the three species were higher in the period without typhoon disturbances compared to those with severe typhoon disturbances. This results suggested that the presence/absence of typhoon disturbance affects the recruitments of the sapling population. Microsatellite markers were developed for Chengiopanax sciadophylloides, which was applied in the 4-ha plot studied and a weak genetic structure could be found in the sapling population. This results coupled with the species regeneration mode suggested the genetic structuring related with gap formation. The simulation model, where the variance in male fecundity and its spatial configuration were simultaneously incorporated, suggested that male fecundities vary with spatially varying favorable light environments and thus affect the inter-annual variation of genetic resources in tree populations.
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Report
(4 results)
Research Products
(10 results)
