A biodiversity theory incorporating intra- and inter specific effects
Project/Area Number |
26840143
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Ecology/Environment
|
Research Institution | The Graduate University for Advanced Studies |
Principal Investigator |
Ohtsuki Hisashi 総合研究大学院大学, 先導科学研究科, 講師 (50517802)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
Keywords | 生物多様性 / 理論モデル / 共生 / 被食捕食 / 競争 / 中立モデル / 群集の中立説 / シミュレーション / ランダム群集モデル / 進化ゲーム理論 / 検定 / 中立説 / 群集生態学 / 負の密度依存 / 負の頻度依存 |
Outline of Final Research Achievements |
Biodiversity is an important issue in ecology, and the mechanism of its maintenance needs to be clarified. A previous "neutral model" of biodiversity paid particular attention to the balance between immigration and local extinction to explain the diversity, while the role of intra specific effects have been underrepresented. I have developed a new theoretical model that incorporates those effects as the third factor to reveal their role in the maintenance of biodiversity. I have found that mutualism and competition produce a few dominant species and many rare ones, and that prey-predator relations produce many intermediate ones. I also found that the deviation from neutrality is detected effectively by the species-frequency-weighted measures of biodiversity, not by the bare total number of species.
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Report
(4 results)
Research Products
(2 results)