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Quantification of food web structure based on metabolic rules and application to real food webs

Research Project

Project/Area Number 26870832
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Conservation of biological resources
Environmental and ecological symbiosis
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

Kadoya Taku  国立研究開発法人国立環境研究所, 生物・生態系環境研究センター, 主任研究員 (40451843)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords群集生態学 / 食物網 / 安定性 / 安定同位体 / 代謝理論
Outline of Final Research Achievements

Quantifying food web structure is essential to understand food web dynamics and stability. For example, energy flux from the detritus to other organisms in an ecosystem affects food web dynamics. By developing a series of methods for reconstructing food web and applying it to real ecosystem, we tested a hypothesis that the greater diversity of litter consuming detritivores promotes energy flow between the resource and top predators in agricultural ponds. We found that the diversity and abundance of detritivores had a significant positive effect on the relative contribution rate of detritus to the diets of predators, even after confounding effects were controlled for. Our study is the first to demonstrate bottom-up effects of detritivore diversity on energy flow in food webs.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (9 results)

All 2017 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Acknowledgement Compliant: 4 results,  Open Access: 2 results) Presentation (4 results)

  • [Int'l Joint Research] ゲルフ大学統合生物学部(カナダ)

    • Related Report
      2015 Research-status Report
  • [Journal Article] 安定同位体比データをもちいた補食‐被食ネットワークのモデル化2016

    • Author(s)
      角谷拓・長田穣・瀧本岳
    • Journal Title

      統計数理

      Volume: 64 Pages: 77-92

    • Related Report
      2016 Annual Research Report 2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Detritivore diversity promotes a relative contribution rate of detritus to the diets of predators in ponds2016

    • Author(s)
      Fukumori, K., Yoshizaki, E., Takamura, N., Kadoya, T.
    • Journal Title

      Ecosophere

      Volume: 7 Issue: 3

    • DOI

      10.1002/ecs2.1211

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Weak interactions and instability cascades2015

    • Author(s)
      Kadoya, T., McCann, K.S.
    • Journal Title

      Scientific Reports

      Volume: 5 Issue: 1 Pages: 12652-12652

    • DOI

      10.1038/srep12652

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Trends and stability of inland fishery resources in Japanese lakes: introduction of exotic piscivores as a driver Read More: http://www.esajournals.org/doi/abs/10.1890/13-2182.12015

    • Author(s)
      Matsuzaki, SS and Kadoya, T (equally contributed)
    • Journal Title

      Ecological Applications

      Volume: - Issue: 5 Pages: 1420-1432

    • DOI

      10.1890/13-2182.1

    • Related Report
      2015 Research-status Report 2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Conservation prioritization in food web2017

    • Author(s)
      Taku Kadoya
    • Organizer
      日本生態学会
    • Place of Presentation
      早稲田大学(東京)
    • Related Report
      2016 Annual Research Report
  • [Presentation] IsoWeb: a Bayesian isotope mixing model for diet analysis of the whole food web2014

    • Author(s)
      Kadoya, T., Osada, Y. and Takimoto, G.
    • Organizer
      99th Ecological Society of America Annual Meeting
    • Place of Presentation
      Sacramento (CA, USA)
    • Year and Date
      2014-08-14
    • Related Report
      2014 Research-status Report
  • [Presentation] Trends and stability of inland fishery resources in Japanese lakes: Introductions of exotic piscivores as a drive2014

    • Author(s)
      Matsuzaki, SS. and Kadoya. T.
    • Organizer
      99th Ecological Society of America Annual Meeting
    • Place of Presentation
      Sacramento (CA, USA)
    • Year and Date
      2014-08-13
    • Related Report
      2014 Research-status Report
  • [Presentation] Decomposer diversity increases a proportional contribution of detritus to the diets of consumers in agricultural ponds2014

    • Author(s)
      Fukumori、K., Yoshizaki, E., Takamura, N. and Kadoya, T.
    • Organizer
      99th Ecological Society of America Annual Meeting
    • Place of Presentation
      Sacramento (CA, USA)
    • Year and Date
      2014-08-13
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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