| 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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| 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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