Early warning signals for predicting impending expansion of invading populations
| Project/Area Number |
23710285
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Resource conservation science
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| Research Institution | Toho University |
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Principal Investigator |
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| Research Collaborator |
SUZUKI Kenta 東邦大学, 理学部, 博士研究員
ITO Kenji 農業環境技術研究所, 生物多様性研究領域, 主任研究員
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 保全生物 / 外来生物管理 / 分布拡大予測 / 個体ベースシミュレーション / アリー効果 / 外来生物 / 個体ベースシミュレーションモデル / カワヒバリガイ |
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| Research Abstract |
Invasive organisms can have significant impacts on ecosystems and human society. Some invasive species have latent periods of low densities before they start expansion. We developed a methodology to predict such species and their impending expansion. Allee effects are one of the mechanisms lowering the growth of low-density populations and thereby causing latent periods before the expansion of invading populations. We built a basic theoretical framework to (1) determine whether Allee effects are responsible for a latent period of an invading population, and to (2) construct an early warning signal for the acceleration of population spread during the latent period. In addition, we reported the current distribution of invasive golden mussel in Lake Kasumigaura.
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Report
(4 results)
Research Products
(15 results)
