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Mathematical ecological study on functional trait dynamics and community responses to environmental changes

Research Project

Project/Area Number 23570040
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ecology/Environment
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

TANAKA Yoshinari  独立行政法人国立環境研究所, 環境リスク研究センター, 室長 (60338647)

Co-Investigator(Kenkyū-buntansha) YOSHINO Masafumi  広島大学, 大学院理学研究科, 教授 (00145658)
Project Period (FY) 2011-04-28 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
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)
Keywords生物群集 / 機能形質 / 生態系機能 / 環境かく乱要因 / 資源競争 / 群集生態学 / ロトカボルテラモデル / 環境応答 / 生態影響評価
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.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (8 results)

All 2014 2013 2012 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (4 results)

  • [Journal Article] Global properties of evolutional Lotka-Volterra system.2013

    • Author(s)
      Yoshino, M. and Y. Tanaka
    • Journal Title

      Advances in Pure Mathematics

      Volume: 3 Pages: 709-718

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Functional traits of herbivores and the food chain efficiency in a simple model ecosystem.2012

    • Author(s)
      Tanaka, Y. and Mano, H.
    • Journal Title

      Ecological Modelling

      Volume: 237 Pages: 88-100

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Trait response in communities to environmental change: Effect of interspecific competition and trait covariance structure.2012

    • Author(s)
      Tanaka, Y.
    • Journal Title

      Theoretical Ecology

      Volume: 5 Pages: 83-98

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] A toxicant threshold model and the genetic variance of tolerance to pollutants. Environmental Toxicology and Chemistry.2012

    • Author(s)
      Tanaka, Y., Mano, H. and Tatsuta, H.
    • Journal Title

      Environmental Toxicology and Chemistry

      Volume: 31 Pages: 813-818

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] The minimal model community as a comprehensive ecological risk assessment framework2014

    • Author(s)
      Tanaka, Y.
    • Organizer
      SETAC Europe 24th Annual Meeting
    • Place of Presentation
      Basel (Switzerland)
    • Year and Date
      2014-05-15
    • Related Report
      2014 Annual Research Report
  • [Presentation] 生物群集における機能形質の多様性と生態系機能の安定性:変動環境下におけるギルド形質の動態理論2012

    • Author(s)
      田中嘉成
    • Organizer
      Joint Meeting of The 59th Annual Meeting of ESJ and The 5th EAFES International Congress
    • Place of Presentation
      龍谷大学(滋賀県)
    • Related Report
      2011 Research-status Report
  • [Presentation] Trait-based framework of ecological risk assessment for multiple stressors

    • Author(s)
      Tanaka, Y.
    • Organizer
      6th SETAC Asia/Pacific Annual Meeting
    • Place of Presentation
      熊本
    • Related Report
      2012 Research-status Report
  • [Presentation] 形質進化と群集動態の相互作用がもたらす超長周期律動:進化的ヘテロクリニックサイクル

    • Author(s)
      田中嘉成
    • Organizer
      第60回日本生態学会大会
    • Place of Presentation
      静岡
    • Related Report
      2012 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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