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2008 Fiscal Year Self-evaluation Report

Bioavailability and biogeochemical process of trace metals in the surface ocean

Planned Research

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Project AreaLinkages in biogeochemical cycles between surface ocean and lower atmosphere
Project/Area Number 18067006
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

TAKEDA Shigenobu  The University of Tokyo, 大学院・農学生命科学研究科, 准教授 (20334328)

Project Period (FY) 2006 – 2010
Keywords海洋科学 / 大気海洋物質循環 / 海洋生態 / 微量元素 / 植物プランクトン
Research Abstract

西部北太平洋に降下したアジア大陸起源エアロゾルから、鉄やその他の必須微量元素が、生物に利用可能な形でどの程度供給されるのかを明らかにすることを目的として、海洋表層における微量元素の動態とその生物利用能の解明を進める。
特に以下の3点に着目した研究を行う。(1)エアロゾルに含まれる微量元素の海水への溶解度を支配する要因は何か?(2)エアロゾルから溶出した微量元素は海水中でどのような物理的化学的形態をとるか?(3)植物プランクトンはどのような化学的形態の微量元素を利用し得るのか?
これらにより、従来は定性的把握に留まっていた大気由来の微量元素の溶解度および生物利用能について、制御機構の理解を含めた定量的な評価を可能にし、親生物元素循環や生物ポンプの理解に新たな見地を与え、気候変動に対する海洋の応答予測に資する。

  • Research Products

    (5 results)

All 2008 2007

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (2 results)

  • [Journal Article] Organic iron (III) complexing ligands during an iron enrichment experiment in the western subarctic North Pacific2008

    • Author(s)
      Kondo, Y., S. Takeda, J. Nishioka, H. Obata, K. Furuya, W.K. Johnson, C.S. Wong
    • Journal Title

      Geophysical Research Letters vol. 35

      Pages: L12601, doi:10.1029/2008GL033354

    • Peer Reviewed
  • [Journal Article] Iron, manganese and aluminum in upper waters of the western South Pacific Ocean and its adjacent seas2008

    • Author(s)
      Obata H., K. Shitashima, K. Isshiki, E. Nakayama
    • Journal Title

      Journal of Oceanography vol. 64

      Pages: 233-245

    • Peer Reviewed
  • [Journal Article] Iron regeneration and organic iron(III)- binding ligand production during in situ zooplankton grazing experiment2007

    • Author(s)
      Sato, M., S. Takeda, K. Furuya
    • Journal Title

      Marine Chemistry vol. 106

      Pages: 471-488

    • Peer Reviewed
  • [Presentation] Underway sampling system for determination of dissolved and particulate trace metals in oceanic surface waters (GEOSS/BIOCARBON)2008

    • Author(s)
      Takeda, S., H. Obata, T. Inoue, G. Teranishi
    • Organizer
      2008 Ocean Sciences Meeting
    • Place of Presentation
      Orlando, U.S.A.
    • Year and Date
      20080302-07
  • [Presentation] Response of subarctic Pacific phytoplankton to the addition of simulated Asian mineral dust2008

    • Author(s)
      Takeda S.
    • Organizer
      7th IOC/WESTPAC Symposium
    • Place of Presentation
      Kota Kinabalu, Malaysia
    • Year and Date
      2008-05-21

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Published: 2010-06-11   Modified: 2016-04-21  

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