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

Cosmogenic radiotracer study of phosphorus cycling in oligotrophic subtropical ocean

Research Project

Project/Area Number 15H02802
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionTokyo University of Marine Science and Technology

Principal Investigator

Kanda Jota  東京海洋大学, 学術研究院, 教授 (60202032)

Co-Investigator(Kenkyū-buntansha) 橋濱 史典  東京海洋大学, 学術研究院, 助教 (80535807)
Project Period (FY) 2015-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywords海洋科学 / 海洋生態 / 気候変動 / 亜熱帯海域 / リン / 生元素循環
Outline of Final Research Achievements

The present study revealed a phosphorus (P) cycling in the western subtropical North Pacific during summer, using cosmogenic radiotracers of 32-P and 33-P and nanomolar concentrations of ambient dissolved and particulate P pools. In the euphotic zone of the study area, trace concentrations of dissolved and particulate P showed spatially uniform distributions, while 33-P/32-P in dissolved P and size-fractionated particulate P pools showed spatially inconsistent distributions. These results suggest that despite of homogeneous ambient P pool concentrations, P cycling varies dynamically in the summer western subtropical North Pacific.

Academic Significance and Societal Importance of the Research Achievements

亜熱帯外洋域におけるリン循環の全容を最新の高感度分析および解析技術を駆使して明らかにした。従来の見方では、亜熱帯外洋域は窒素やリン等の栄養塩類が枯渇した生物生産性に乏しい海域であったが、本研究により、リンが生物体に取り込まれていく過程が海域によって大きく異なることを示すことができた。リンの生物利用は二酸化炭素から有機物を合成する光合成を支えるものであり、本研究の成果は地球上の二酸化炭素収支の仕組みを理解する上で重要な知見となる。

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (25 results)

All 2019 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (19 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Basin-scale variations in labile dissolved phosphoric monoesters and diesters in the central North Pacific Ocean2019

    • Author(s)
      Tamaha Yamaguchi, Mitsuhide Sato, Fuminori Hashihama, Makoto Ehama, Takuhei Shiozaki, Kazutaka Takahashi, and Ken Furuya
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 印刷中 Issue: 5 Pages: 3058-3072

    • DOI

      10.1029/2018jc014763

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biogeochemical controls of surface ocean phosphate2019

    • Author(s)
      Adam C. Martiny, Michael W. Lomas, Weiwei Fu, Philip W. Boyd, Yuh-ling L. Chen, Gregory A. Cutter, Michael J. Ellwood, Ken Furuya, Fuminori Hashihama, Jota Kanda, David M. Karl, Taketoshi Kodama, Qian P. Li, Jian Ma, Thierry Moutin, E. Malcolm S. Woodward, J. Keith Moore
    • Journal Title

      Science Advances

      Volume: 5 Issue: 8

    • DOI

      10.1126/sciadv.aax0341

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Arsenate and microbial dynamics in different phosphorus regimes of the subtropical Pacific Ocean2019

    • Author(s)
      Hashihama Fuminori、Suwa Shuhei、Kanda Jota、Ehama Makoto、Sakuraba Ryousuke、Kinouchi Shinko、Sato Mitsuhide、Yamaguchi Tamaha、Saito Hiroaki、Ogura Yoshitoshi、Hayashi Tetsuya、Mori Hiroshi、Kurokawa Ken、Suzuki Shotaro、Hamasaki Koji
    • Journal Title

      Progress in Oceanography

      Volume: 176 Pages: 102115-102115

    • DOI

      10.1016/j.pocean.2019.05.007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Assessment of potential phagotrophy by pico- and nanophytoplankton in the North Pacific Ocean using flow cytometry2019

    • Author(s)
      Mitsuhide Sato, Fuminori Hashihama
    • Journal Title

      Aquatic Microbial Ecology

      Volume: 82 Issue: 3 Pages: 275-288

    • DOI

      10.3354/ame01892

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Liquid waveguide spectrophotometric measurements of arsenate and particulate arsenic, as well as phosphate and particulate phosphorus, in seawater2017

    • Author(s)
      HASHIHAMA, F., S. SUWA and J. KANDA
    • Journal Title

      Journal of Oceanography

      Volume: 73 Issue: 4 Pages: 439-447

    • DOI

      10.1007/s10872-017-0412-6

    • NAID

      120006620253

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Sensitive determination of total particulate phosphorus and particulate inorganic phosphorus in seawater using liquid waveguide spectrophotometry2016

    • Author(s)
      Makoto Ehama, Fuminori Hashihama, Shinko Kinouchi, Jota Kanda, Hiroaki Saito
    • Journal Title

      Talanta

      Volume: 153 Pages: 66-70

    • DOI

      10.1016/j.talanta.2016.02.058

    • NAID

      120006620254

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Presentation] ナノモルレベル栄養塩類の分布と今後の展望2019

    • Author(s)
      橋濱史典
    • Organizer
      東京大学大気海洋研究所共同利用研究集会「白鳳丸30周年記念世界一周航海 (HEAW30) へ向けた研究戦略会議」
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 長光路吸光光度分析法を用いた全粒状窒素・リンの高感度計測2019

    • Author(s)
      佐々木里樹・橋濱史典・武田典子・神田穣太
    • Organizer
      日本海洋学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 亜熱帯外洋域の有機物生産を支えるリン源の特定2019

    • Author(s)
      橋濱史典
    • Organizer
      日本エアロゾル学会海洋大気エアロゾル研究会ミニ研究集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 西部北太平洋亜熱帯域における粒状リン成分組成の季節変動2019

    • Author(s)
      笹岡洋志・橋濱史典・安田一郎・石井雅男
    • Organizer
      気象庁Ocean Laboratory会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 北太平洋外洋域における易分解性リン酸モノエステルの空間分布と生物利用について2019

    • Author(s)
      山口珠葉・橋濱史典・齊藤宏明・高橋一生・古谷研
    • Organizer
      日本海洋学会海洋生物研究会海洋生物シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 西部北太平洋亜熱帯定点における各種リンプールの短期変動2018

    • Author(s)
      橋濱史典・佐藤岳・加藤遥・長井健容・山口珠葉・齊藤宏明・小川浩史
    • Organizer
      日本海洋学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 西部北太平洋亜熱帯域における粒状リン成分組成の時空間変動2018

    • Author(s)
      笹岡洋志・橋濱史典・安田一郎・石井雅男
    • Organizer
      日本海洋学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 北太平洋亜熱帯域における粒状ポリリン酸の東西分布2018

    • Author(s)
      杉山貴紀・橋濱史典・加藤遥・齊藤宏明
    • Organizer
      日本海洋学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 湿式酸化分解法による海水中の全溶存窒素・リンの全自動分析2018

    • Author(s)
      安井沙織・橋濱史典・西村崇・小川浩史・神田穣太
    • Organizer
      日本海洋学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 西部北太平洋亜熱帯域における各種リンプールの季節変化2018

    • Author(s)
      羽住彩花・橋濱史典・笹岡洋志・武田典子・石井雅男
    • Organizer
      気象庁Ocean Laboratory会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 微量粒状リン成分分画測定法の確立2017

    • Author(s)
      笹岡洋志・橋濱史典・杉山貴紀
    • Organizer
      日本海洋学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 天然放射性リンを用いた西部北太平洋亜熱帯域のリン循環解析2017

    • Author(s)
      加藤遥・橋濱史典・伊藤友加里・神田穣太
    • Organizer
      日本海洋学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 蛍光光度分析法による微量粒状ポリリン酸の測定2017

    • Author(s)
      杉山貴紀・橋濱史典・笹岡洋志・羽住彩花・石井雅男
    • Organizer
      日本海洋学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 亜熱帯海域におけるリン酸およびリン酸モノエステルの時系列変動2017

    • Author(s)
      山口珠葉・佐藤光秀・橋濱史典・加藤遥・塩崎拓平・高橋一生・古谷研
    • Organizer
      日本海洋学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 西部北太平洋亜熱帯域における栄養塩環境と植物プランクトン群集の季節変動2017

    • Author(s)
      橋濱史典・隈部あき・笹岡洋志・羽住彩花・石井雅男・佐藤光秀
    • Organizer
      日本海洋学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Distribution pattern of labile phosphoric esters and alkaline phosphatase activities in the subtropical North Pacific Ocean2017

    • Author(s)
      Tamaha Yamaguchi, Mitsuhide Sato, Fuminori Hashihama, Makoto Ehama, Takuhei Shiozaki, Kazutaka Takahashi, Ken Furuya
    • Organizer
      ASLO Aquatic Science Meeting
    • Place of Presentation
      Honolulu, Hawaii, USA
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 南北太平洋亜熱帯域における各形態リンの空間分布2016

    • Author(s)
      江濵誠・橋濱史典・齊藤宏明・山口珠葉・佐藤光秀・塩崎拓平・福田秀樹・小川浩史・神田穣太
    • Organizer
      日本海洋学会
    • Place of Presentation
      東京大学
    • Year and Date
      2016-03-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 西部北太平洋亜熱帯域における溶存リンの季節変化2016

    • Author(s)
      羽住彩花・橋濱史典・石井雅男
    • Organizer
      日本海洋学会
    • Place of Presentation
      鹿児島大学
    • Related Report
      2016 Annual Research Report
  • [Presentation] 長光路吸光光度分析法を用いたヒ酸塩、リン酸塩および粒状ヒ素、粒状リンの高感度計測2016

    • Author(s)
      橋濱史典・諏訪修平・神田穣太
    • Organizer
      日本海洋学会
    • Place of Presentation
      鹿児島大学
    • Related Report
      2016 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2022-11-04  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi