| Project/Area Number |
15K14607
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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 | University of the Ryukyus |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 生物多様性 / マクロ生態学 / 種アバンダンス分布 / 中立モデル / 群集系統 / 種多様性 / 群集生態学 / マクロ生態学的パターン |
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| Outline of Final Research Achievements |
We compiled global-scale dataset of species abundance distribution (SAD) sampled in local communities across the planet and multiple taxa, and then tested neutral and non-neutral models to predict SAD patterns. We tested 1) climatic and geographic correlates of global forest tree species abundance distributions and community evenness, 2) non-neutrality in forest communities and the roles of evolutionary and ecological processes, 3) the tangled link between diversity measures (alpla, beta and gamma), 4) the influence of competitive intransitivity on emerging neutral patterns in local plant communities and 5) taxon- and habitat-specificities of SAD patterns. Based on these results, we demonstrated the role of non-neutral ecological processes to stochastic neutral processes such as dispersal limitation and historical contingency.
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