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Evaluating the environmental dynamics of dissolved pyrogenic organic matter in the ocean

Research Project

Project/Area Number 16H02930
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionHokkaido University

Principal Investigator

Youhei Yamashita  北海道大学, 地球環境科学研究院, 准教授 (50432224)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Keywords海洋科学 / 生物地球化学 / 溶存有機物 / 燃焼起源有機物
Outline of Final Research Achievements

Pyrogenic organic matter (PyOM) is an important component in the global carbon cycle. The PyOM produced by biomass burning or fossil fuel combustion is transported to oceans by the atmosphere or rivers. However, environmental dynamics (i.e., major sources and sinks) of PyOM in marine environments have not been well-documented. In this study, dissolved PyOM (D-PyOM) collected from a wide range of marine environments, from coastal to open oceans and from surface to deep oceans, were analyzed using the benzene polycarboxylic acid (BPCA) method. We found that the possible major source of D-PyOM in the coastal and shelf regions was fluvial inputs through rivers, while D-PyOM in the open ocean was possibly derived from the atmospheric deposition.

Academic Significance and Societal Importance of the Research Achievements

近年、炭素循環におけるPyOMの重要性が広く認識され、陸域においてその収支や再分配に関する研究が多く行われている。その結果、森林火災などのバイオマス燃焼により生成したPyOMの一部が河川を通して海洋へと輸送される事が明らかとなった。しかし、海洋でのPyOM動態に関する知見は乏しく、地球表層におけるPyOM循環像は明らかでない。そのような背景の中、本研究は、海洋溶存有機物画分におけるPyOM動態に関して先駆的な成果を上げており、その学術的意義は大きい。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (10 results)

All 2018 2017 2016 Other

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

  • [Int'l Joint Research] Florida International University(米国)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Determination of the freshwater origin of Coastal Oyashio Water using humic-like fluorescence in dissolved organic matter2018

    • Author(s)
      Y. Mizuno, J. Nishioka, T. Tanaka, Y. Tada, K. Suzuki, Y. Tsuzuki, A. Sugimoto, *Y. Yamashita
    • Journal Title

      J. Oceanogr

      Volume: 74 Issue: 5 Pages: 509-521

    • DOI

      10.1007/s10872-018-0477-x

    • NAID

      120006529649

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Distribution and Sources of Dissolved Black Carbon in Surface Waters of the Chukchi Sea, Bering Sea, and the North Pacific Ocean.2017

    • Author(s)
      Nakane M, Ajioka T, and Yamashita Y
    • Journal Title

      Frontiers in Earth Science

      Volume: 5 Pages: 34-34

    • DOI

      10.3389/feart.2017.00034

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Factors controlling the geographical distribution of fluorescent dissolved organic matter in the surface waters of the Pacific Ocean.2017

    • Author(s)
      YAMASHITA, Y., F. HASHIHAMA, H. SAITO, H. FUKUDA, and H. OGAWA
    • Journal Title

      Limnology and Oceanography

      Volume: 62 Issue: 6 Pages: 2360-2374

    • DOI

      10.1002/lno.10570

    • NAID

      120006533132

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Distribution of allochthonous humic-like fluorescent dissolved organic matter in the western North Pacific Ocean2018

    • Author(s)
      Yamashita Y, Nishioka J, Obata H, and Ogawa H
    • Organizer
      2018 Ocean Sciences Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 蛍光性溶存有機物を用いた沿岸親潮水の起源推定2017

    • Author(s)
      水野優, 西岡純, 多田雄哉, 鈴木光次, 山下洋平
    • Organizer
      JpGU-AGU Joint meeting 2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] Quantitative and qualitative distribution of fluorescent dissolved organic matter in the Pacific surface waters2016

    • Author(s)
      Yamashita, Y., F. Hashihama, H. Saito, H. Fukuda, and H. Ogawa
    • Organizer
      18th International Conference of the International Humic Substances Society
    • Place of Presentation
      Kanazawa Bunka Hall(石川県金沢市)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 太平洋表層における蛍光性溶存有機物の量的および質的分布2016

    • Author(s)
      山下洋平, 橋濱史典, 齊藤宏明, 福田秀樹, 小川浩史
    • Organizer
      日本地球惑星科学連合2016年大会
    • Place of Presentation
      幕張メッセ(千葉県千葉市)
    • Related Report
      2016 Annual Research Report
  • [Remarks] 研究代表者ホームページ

    • URL

      http://geos.ees.hokudai.ac.jp/yamashita/

    • Related Report
      2018 Annual Research Report
  • [Remarks] 研究者Webページ

    • URL

      http://geos.ees.hokudai.ac.jp/yamashita/homu.html

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report

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Published: 2016-04-21   Modified: 2022-10-07  

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