Relations between structure of biological communities and ecosystem functions determined by interactions of predation and competition
| Project/Area Number |
19570024
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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 |
Ecology/Environment
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
NAMBA Toshiyuki Osaka Prefecture University, 理学系研究科, 教授 (30146956)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 相互作用 / 捕食 / 競争 / 生物群集 / 数理モデル / 生態系機能 / 生物多様性 / 生産性 |
|---|
| Research Abstract |
I studied relations between biodiversity, ecosystem function and stability, employing mathematical models. I have obtained the following results ; the higher number of herbivore species and the more intense competition among plants may enhance plant diversity ; heterogeneous spatial structure of a habitat may relax indirect competition ; relative efficiency between indirect and direct energy paths from the producer to the omnivore controls dynamics of a food web including omnivores ; a primary factor of irruptive increase in a herbivore population is competition among plants, and predators stabilize a community composed of herbivores and plants.
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Report
(4 results)
Research Products
(47 results)
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[Presentation] 雑食と食物網の安定性2007
Author(s)
難波 利幸
Organizer
研究集会「第4回生物数学の理論とその応用」
Place of Presentation
京都大学数理解析研究所
Year and Date
2007-10-31
Related Report
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