• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Evaluation of stability of a tropical rainforest food web through isotope anlayses

Research Project

Project/Area Number 16K14811
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Ecology/Environment
Research InstitutionOkayama University

Principal Investigator

Fujio Hyodo  岡山大学, 異分野融合先端研究コア, 准教授 (70435535)

Co-Investigator(Kenkyū-buntansha) 陀安 一郎  総合地球環境学研究所, 研究基盤国際センター, 教授 (80353449)
Research Collaborator Itioka Takao  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords食物網 / 同位体 / 熱帯雨林 / 放射性炭素 / アミノ酸
Outline of Final Research Achievements

Tropical rainforests are one of the ecosystems that have highest biodiversity, and the food webs have long been considered to be stable. However, the stability of the tropical rainforest food webs is poorly investigated because of the technical difficulty. In this study, we applied stable carbon and nitrogen isotopes of bulk samples, nitrogen isotopes of amino acids, and radiocarbon to investigate the feeding habits of Hymenopterans sampled in a tropical rainforest. Our results showed that there was no clear difference in their feeding habits during seven years, supporting the view on the stability of tropical rainforest food webs.

Academic Significance and Societal Importance of the Research Achievements

熱帯雨林は地球上で最も生物多様性の高い生態系である。同時に、急激に生物多様性が失われており、その保全や復元が求められている生態系でもある。これら保全や復元には、そこに生息している生物の生態、特に何を食べているのかといった食性に関する情報が必要である。本研究では野外観察だけでは得ることが難しいこれらの情報を同位体手法を用いて推定し、その安定性を確認することができた。これらの情報は今後の生態系管理や復元の基礎となるものと考えられる。また、本研究は多くの博物館に保存されている昆虫標本が生態系の現状を調べる際の試料として極めて重要であることを意味している。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results) Book (1 results)

  • [Int'l Joint Research] Forest Department Sarawak(マレーシア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Stable isotope analysis reveals the importance of plant‐based diets for tropical ant‐mimicking spiders2018

    • Author(s)
      Stable isotope analysis reveals the importance of plant‐based diets for tropical ant‐mimicking spiders
    • Journal Title

      Entomological Science

      Volume: 21 Issue: 4 Pages: 461-468

    • DOI

      10.1111/ens.12331

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] New species of the ant-mimicking genus Myrmarachne MacLeay, 1839 (Araneae: Salticidae) from Sarawak, Borneo.2018

    • Author(s)
      Takeshi Yamasaki, Yoshiaki Hashimoto, Tomoji Endo, Fujio Hyodo, Takao Itioka, Paulus Meleng
    • Journal Title

      Zootaxa

      Volume: 4521 Issue: 3 Pages: 335-356

    • DOI

      10.11646/zootaxa.4521.3.2

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new species of the genus Sphecotypus O. Pickard-Cambridge, 1895 from Borneo, with a comparison with the holotype of S. birmanicus (Thorell, 1897).2017

    • Author(s)
      4.Yamasaki, T, Hashimoto Y, Endo T, Hyodo F, Itioka T, Tavano M.L.
    • Journal Title

      Annali del Museo Civico di Storia Naturale Giacomo Doria

      Volume: 110 Pages: 21-32

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 炭素・窒素同位体が解き明かす熱帯雨林の節足動物の食性2016

    • Author(s)
      兵藤 不二夫
    • Journal Title

      日本生態学会誌

      Volume: 66 Pages: 421-428

    • NAID

      130005406226

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 周辺の原生林が熱帯雨林の二次林のアリの食性に及ぼす影響:同位体による解明2017

    • Author(s)
      兵藤不二夫, 岸本圭子, 松岡真如, 田中洋, 橋本佳明, 石井励一郎, 市岡孝朗
    • Organizer
      日本生態学会第64回全国大会
    • Place of Presentation
      東京
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] Effects of remnant primary forests on feeding habits of ants in a secondary forest in Sarawak, Malaysia: An isotopic study2016

    • Author(s)
      Fujio Hyodo, Keiko Kishimoto-Yamada, Masayuki Matsuoka, Hiroshi O Tanaka, Yoshiaki Hashimoto, Reiichiro Ishii, Takao Itioka
    • Organizer
      XVII International Colloquium on Soil Zoology and XIV International Colloquium on Apterygota
    • Place of Presentation
      Nara, Japan
    • Year and Date
      2016-08-23
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Book] 土壌生態系と地上生態系のリンク 「土壌生態学」(金子信博編)2018

    • Author(s)
      兵藤不二夫
    • Total Pages
      14
    • Publisher
      朝倉書店
    • Related Report
      2018 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi