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Construction of ecosystem stoichiometry concept based on bio-geological coupling

Research Project

Project/Area Number 18K19367
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 45:Biology at organismal to population levels and anthropology, and related fields
Research InstitutionResearch Institute for Humanity and Nature

Principal Investigator

TAYASU Ichiro  総合地球環境学研究所, 研究基盤国際センター, 教授 (80353449)

Co-Investigator(Kenkyū-buntansha) 申 基チョル  総合地球環境学研究所, 研究基盤国際センター, 准教授 (50569283)
Project Period (FY) 2018-06-29 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords安定同位体 / 生態系ストイキオメトリー / 非伝統的同位体 / ストイキオメトリー / 元素 / 同位体 / 生態系
Outline of Final Research Achievements

We studied the dynamics of several geologically derived elements on stream organisms using non-traditional isotopes such as magnesium (δ26Mg), zinc (δ66Zn), calcium (δ44/40Ca), and strontium (δ88/86Sr) isotope ratios in rivers. In addition, we measured carbon (δ13C), nitrogen (δ15N), and strontium (87Sr/86Sr) isotope ratios, which are commonly used in isotope studies of riverine ecology.
These research methods are still developing as a field riverine field ecology because there are still some difficulties in the pretreatment and analytical techniques. However finally, we presented the relationships of these isotope ratios in living organisms (invertebrates, fishes, organic matter, and so on). As a result, we showed results that can be used as a base for ecosystem stoichiometry studies.

Academic Significance and Societal Importance of the Research Achievements

河川生態系は、その集水域を流下する水により涵養されるため、流れる物質は地質により影響を受ける。さらに、河川に生息する生物の食う-食われる関係(食物網)によっても個別の生物は影響を受けるとともに、あらゆる河川が人間の影響を受けている状況においては人間の影響も無視し得ない。本研究では、河川に生息する生物が自然環境(地質要因)および流域負荷(人為要因)により構成する元素がどのように変化するか、それをいろいろな元素の同位体比を用いて明らかにした。この研究によって明らかになったことは、たくさんの元素の中の一部であるが、今後の研究に有効な研究手法を開発することができた。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Calcium and strontium stable isotopes reveal similar behaviors of essential Ca and nonessential Sr in stream food webs2022

    • Author(s)
      Nitzsche Kai Nils、Wakaki Shigeyuki、Yamashita Katsuyuki、Shin Ki‐Cheol、Kato Yoshikazu、Kamauchi Hiromitsu、Tayasu Ichiro
    • Journal Title

      Ecosphere

      Volume: 13 Issue: 2 Pages: 3921-3921

    • DOI

      10.1002/ecs2.3921

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Magnesium and zinc stable isotopes as a new tool to understand Mg and Zn sources in stream food webs2020

    • Author(s)
      Nitzsche Kai Nils、Shin Ki‐Cheol、Kato Yoshikazu、Kamauchi Hiromitsu、Takano Shotaro、Tayasu Ichiro
    • Journal Title

      Ecosphere

      Volume: 11 Issue: 8

    • DOI

      10.1002/ecs2.3197

    • NAID

      120006888512

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 同位体環境学と同位体地図を用いた研究の展開2020

    • Author(s)
      陀安一郎
    • Journal Title

      海洋化学研究

      Volume: 33 Pages: 27-31

    • Related Report
      2020 Research-status Report
    • Open Access
  • [Journal Article] Magnesium isotopes reveal bedrock impacts on stream organisms2019

    • Author(s)
      Nitzsche Kai Nils、Kato Yoshikazu、Shin Ki-Cheol、Tayasu Ichiro
    • Journal Title

      Science of The Total Environment

      Volume: 688 Pages: 243-252

    • DOI

      10.1016/j.scitotenv.2019.06.209

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 多元素同位体手法による環境トレーサビリティ手法の活用2021

    • Author(s)
      陀安一郎,SHIN Ki-Cheol
    • Organizer
      JpGU Meeting 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 環境トレーサビリティーを実現する多元素同位体手法2020

    • Author(s)
      陀安一郎,藤吉麗,藪崎志穂,申ギチョル,中野孝教,谷口真人
    • Organizer
      JpGU Meeting 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Magnesium and zinc stable isotopes in stream ecology2019

    • Author(s)
      Kai Nils Nitzsche, Yoshikazu Kato, Ki-Cheol Shin, Hiromitsu Kamauchi, lchiro Tayasu
    • Organizer
      JpGU meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis of Ca isotope ratios (δ44/40Ca) in stream food webs: methodological requirements and first results2019

    • Author(s)
      Kai Nils Nitzsche, Katsuyuki Yamashita, Shigeyuki Wakaki, Ki-Cheol Shin, Yoshikazu Kato, Hiromitsu Kamauchi, Ichiro Tayasu
    • Organizer
      9th Symposium on Environmental Isotope Study
    • Related Report
      2019 Research-status Report
  • [Presentation] Investigation on possibility of the identification of air pollutant sources using ratios of stable lead and strontium isotopes2019

    • Author(s)
      Shinji Sakurai, Takao Nakagiri, Kosuke Tanaka, Haruhiko Horino, Ki-Cheol Shin, Ichiro Tayasu, Shiho Yabusaki
    • Organizer
      JpGU meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Non-traditional isotopes in stream ecology.2019

    • Author(s)
      Nitzsche K.N., Kato Y., Shin K.-C., Kamauchi H. and Tayasu I
    • Organizer
      The 66th Annual Meeting of the Ecological Society of Japan
    • Related Report
      2018 Research-status Report
  • [Presentation] Mg isotopes reveal bedrock impacts on stream organism.2018

    • Author(s)
      Nitzsche K.N., Kato Y., Shin K.-C. and Tayasu I.
    • Organizer
      8th Symposium on Environmental Isotope Study
    • Related Report
      2018 Research-status Report
  • [Presentation] Method for Ca isotope analysis using TIMS.2018

    • Author(s)
      Yamashita K., Wakaki S., Inoue M., Nitzsche K.N. and Shin K.-C.
    • Organizer
      8th Symposium on Environmental Isotope Study
    • Related Report
      2018 Research-status Report

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Published: 2018-07-25   Modified: 2023-01-30  

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