| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Mathematical models for predicting responses by communities to anthropogenic environmental disturbances were investigated from the perspective of changes in trait distributions of composite species in the community. In order to analyze the effect of stochasticity of colonization and extinction of species in the formation of communities on the trait changes in the community, we made a generalized community dynamics model which incorporated the environmental filtration effect and the effect of resource competition between species. The numerical simulations and mathematical analyses indicated that the variance of functional traits among species within communities decreased with the environmental filtration effect, whereas it increased with the resource competition among species. This trend was not greatly influenced by the inclusion of the stochastic process in colonization and extinction of composite species.
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