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Ecosystem structure analysis based on metabolic isotope mapping

Research Project

Project/Area Number 25650146
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Ecology/Environment
Research InstitutionResearch Institute for Humanity and Nature (2014)
Kyoto University (2013)

Principal Investigator

TAYASU Ichiro  総合地球環境学研究所, 研究高度化支援センター, 教授 (80353449)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords安定同位体 / 微生物 / アミノ酸 / 土壌 / 粒状有機物
Outline of Final Research Achievements

The project aimed at testing the use of nitrogen isotope ratios of individual amino acids for studying ecosystem structure focusing on detritus food chain. Previous studies have shown that nitrogen isotope ratios of individual amino acids can provide trophic positions of living organisms without referring to the food bases. However, change in nitrogen isotope ratios of amino acids on the trophic transfer has mostly studied in the grazing chain, but not well been studied in the detritus chain. In this study, we showed the behavior of nitrogen isotope ratios of amino acids in model systems both terrestrial and aquatic ecosystems. The results indicated that nitrogen isotope ratios of phenylalanine and glutamic acid behave differently in decomposition process, and suggest that the potential usefulness of the approach on the study of ecosystems.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (10 results)

All 2014 2013

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 1 results) Presentation (7 results)

  • [Journal Article] Stable nitrogen isotopic composition of amino acids reveals food web structure in stream ecosystems2014

    • Author(s)
      Ishikawa NF, Kato Y, Togashi H, Yoshimura M, Yoshimizu C, Okuda N, Tayasu I
    • Journal Title

      Oecologia

      Volume: 175 Issue: 3 Pages: 911-922

    • DOI

      10.1007/s00442-014-2936-4

    • Related Report
      2014 Annual Research Report 2013 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 安定同位体分析が拓く環境科学の地平2014

    • Author(s)
      加藤義和, 陀安一郎
    • Journal Title

      環境技術

      Volume: 43 Pages: 209-214

    • Related Report
      2014 Annual Research Report
  • [Journal Article] Contributions of detrital subsidies to aboveground spiders during secondary succession, revealed by radiocarbon and stable isotope signatures2013

    • Author(s)
      Takasni Haraguchi, Masao Uchida, Yasuyuki Shibata, Ichiro Tayasu
    • Journal Title

      Oecologia

      Volume: 171 Issue: 4 Pages: 935-944

    • DOI

      10.1007/s00442-012-2446-1

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] アミノ酸のδ15N値を用いたスナメリの栄養段階推定式の改良と長崎周辺個体群の摂餌生態2014

    • Author(s)
      後藤洋加,梅澤有,天野雅男,山口敦子,由水千景,陀安一郎,原田一孝,石橋敏章
    • Organizer
      2014年度日本海洋学会秋季大会
    • Place of Presentation
      長崎大学
    • Year and Date
      2014-09-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] 脂肪酸分析によるヒゲナガカワトビケラの微生物利用評価2014

    • Author(s)
      赤松史一,岡野淳一,藤永承平,加藤義和,由水千景,中野伸一,陀安一郎
    • Organizer
      日本陸水学会第79回大会
    • Place of Presentation
      筑波大学,つくば
    • Year and Date
      2014-09-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] 同位体分析における測定誤差の解析:較正直線による補正を行なった場合の誤差の表記と計算について2014

    • Author(s)
      原口岳, 陀安一郎
    • Organizer
      日本生態学会第61回大会
    • Place of Presentation
      広島国際会議場
    • Related Report
      2013 Research-status Report
  • [Presentation] 生物の同位体比から得られる生態系・生物多様性情報について2013

    • Author(s)
      陀安一郎
    • Organizer
      日本地球惑星科学連合2013年大会
    • Place of Presentation
      幕張メッセ、千葉
    • Related Report
      2013 Research-status Report
  • [Presentation] 羅臼岳における標高傾度に沿った地表性クモ類の群集変化2013

    • Author(s)
      原口岳, 太田藍乃, 中森泰三, 藤井佐織, 萩原佑亮, 菱拓雄, 森章, 水町衣里, 大園享司, 陀安一郎
    • Organizer
      日本蜘蛛学会第45回大会
    • Place of Presentation
      高知大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 微生物分解に伴う湖沼有機物の窒素安定同位体比の変動2013

    • Author(s)
      由水千景, 陀安一郎
    • Organizer
      日本陸水学会第78回大会
    • Place of Presentation
      龍谷大学
    • Related Report
      2013 Research-status Report
  • [Presentation] 同位元素を用いた食物網の記述2013

    • Author(s)
      原口岳, 陀安一郎
    • Organizer
      第29回個体群生態学会
    • Place of Presentation
      大阪府立大学,中百舌鳥キャンパス
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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