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Destiny of Arctic ice algae facing rapid sea ice decline

Research Project

Project/Area Number 18H03368
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 63010:Environmental dynamic analysis-related
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

WATANABE Eiji  国立研究開発法人海洋研究開発機構, 地球環境部門(北極環境変動総合研究センター), 副主任研究員 (50722550)

Co-Investigator(Kenkyū-buntansha) 伊東 素代  国立研究開発法人海洋研究開発機構, 地球環境部門(北極環境変動総合研究センター), 副主任研究員 (60373453)
小野寺 丈尚太郎  国立研究開発法人海洋研究開発機構, 地球環境部門(北極環境変動総合研究センター), 主任研究員 (50467859)
鈴木 淳  国立研究開発法人産業技術総合研究所, 地質調査総合センター, 研究グループ長 (60344199)
田中 裕一郎  国立研究開発法人産業技術総合研究所, 地質調査総合センター, 研究部門長 (50357456)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Keywordsアイスアルジー / 海氷減少 / セディメントトラップ / 生態系モデリング
Outline of Final Research Achievements

The bottom-tethered mooring with multiple sensors was deployed in Northwind Abyssal Plain (Station NAP18t) of the western Arctic Ocean from August 26, 2018 to August 6, 2019. The one-year record of sea-ice thickness, subsurface ocean current, and settling particle fluxes were analyzed. Then we addressed seasonal, interannual, and decadal variations in ice-algal productivity (Ice-PP) from 1980 to 2009, which were simulated by five sea ice-ocean ecosystem models. The simulated annual total Ice-PP has no common decadal trend for 1980-2009 among the five models. The multi-model averages show that ice-algal bloom timing shifts to an earlier date and the bloom duration shortens in four sub-regions (Chukchi Sea, Canada Basin, Eurasian Basin, and Barents Sea). This intercomparison indicates that an appropriate balance of stable sea-ice cover and enough light availability is necessary to retain Ice-PP.

Academic Significance and Societal Importance of the Research Achievements

本課題では、氷厚計・流向流速計・セディメントトラップを1つの係留系に装着し、海氷特性や直下の海流、有機物粒子としての沈降量の情報も同時に取得する世界的にも最先端でユニークな試みを実施することができた。またモデル間相互比較によってアイスアルジー基礎生産量の不確定性を定量的に評価し、長期変動も含めて信頼性の高い知見を導出した。この取り組みは北極海生態系モデリングを黎明期から成熟期に導くとともに、陸・海・空を結合させた地球システムモデルの改良、および社会的に注目されている温暖化実験の精度向上にもつながるものである。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (26 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (8 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (16 results) (of which Int'l Joint Research: 14 results)

  • [Int'l Joint Research] University of Tasmania(オーストラリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Institute of Ocean Science(カナダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Alaska Fairbanks(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Alaska Fairbanks/University of Washington(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Victoria/Institute of Ocean Science(カナダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Tasmania(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Alaska Fairbanks/University of Washington(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Victoria/Institute of Ocean Science(カナダ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Status and trends of Arctic Ocean environmental change and its impacts on marine biogeochemistry: Findings from the ArCS project2021

    • Author(s)
      Kikuchi Takashi、Nishino Shigeto、Fujiwara Amane、Onodera Jonaotaro、Yamamoto-Kawai Michiyo、Mizobata Kohei、Fukamachi Yasushi、Watanabe Eiji
    • Journal Title

      Polar Science

      Volume: 27 Pages: 100639-100639

    • DOI

      10.1016/j.polar.2021.100639

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multi-model intercomparison of the pan-Arctic ice-algal productivity on seasonal, interannual, and decadal timescales2019

    • Author(s)
      Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 124 Issue: 12 Pages: 9053-9084

    • DOI

      10.1029/2019jc015100

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Modeling studies on pan-Arctic ice-algal productivity: Present status and future projection2020

    • Author(s)
      Watanabe, E.
    • Organizer
      Japan Geoscience Union-American Geophysical Union (JpGU-AGU) Joint Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of oceanographic condition to transportation of biosiliceous particles in the Pacific side of the Arctic Ocean2020

    • Author(s)
      Onodera, J., E. Watanabe, S. Kimura, K. Mizobata, Y. Tanaka, and N. Harada
    • Organizer
      Japan Geoscience Union-American Geophysical Union (JpGU-AGU) Joint Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Introduction of the Ice Algae Model Intercomparison Project phase 2 (IAMIP2)2020

    • Author(s)
      Hayashida, H., M. Jin, N. S. Steiner, N. C. Swart, E. Watanabe, R. Fiedler, A. M. Hogg, A. E. Kiss, R. J. Matear, and P. G. Strutton
    • Organizer
      Scientific Committee on Antarctic Research (SCAR) Open Science Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Introduction of the Ice Algae Model Intercomparison Project phase 2 (IAMIP2)2020

    • Author(s)
      Hayashida, H., M. Jin, N. S. Steiner, N. C. Swart, E. Watanabe, R. Fiedler, A. M. Hogg, A. E. Kiss, R. J. Matear, and P. G. Strutton
    • Organizer
      Arctic Change 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multi-model intercomparison of the pan-Arctic ice-algal productivity on seasonal, interannual, and decadal timescales2020

    • Author(s)
      Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Organizer
      Ocean Sciences Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modeling study on resuspended particle transport in the western Arctic Ocean2020

    • Author(s)
      Watanabe, E., and J. Onodera
    • Organizer
      Sixth International Symposium on the Arctic Research (ISAR-6) Online Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multi-model intercomparison of ice-algal productivity in the Arctic Ocean on seasonal, interannual, and decadal timescales2019

    • Author(s)
      Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Organizer
      Arctic Science Summit Week Science Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FAMOS multi-model intercomparison of the pan-Arctic ice algal productivity on seasonal and decadal timescales2019

    • Author(s)
      Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Organizer
      Integrated Marine Biosphere Research (IMBeR) Open Science Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FAMOS multi-model intercomparison of ice-algal productivity in the Arctic Ocean on seasonal, interannual, and decadal timescales2019

    • Author(s)
      Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Organizer
      International Glaciological Society (IGS) Sea Ice Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 北極海におけるアイスアルジー基礎生産量のモデル間相互比較2019

    • Author(s)
      渡邉 英嗣, M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Organizer
      日本海洋学会秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Perspective from FAMOS multi-model intercomparison of ice algal productivity2019

    • Author(s)
      Watanabe, E.
    • Organizer
      Japan - U.S. Arctic Science Collaboration Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multi-model intercomparison of ice algal productivity on the Arctic sub-region scales2018

    • Author(s)
      Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Organizer
      Forum for Arctic Modeling and Observational Synthesis (FAMOS) Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FAMOS multi-model intercomparison of ice algal productivity on the Arctic sub-region scales2018

    • Author(s)
      Watanabe, E.
    • Organizer
      Pacific Arctic Group (PAG) Science Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sea ice-ocean modeling study collaborated with the western Arctic sediment trap2018

    • Author(s)
      Watanabe, E.
    • Organizer
      POLAR 2018 SCAR/IASC Open Science Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FAMOS multi-model intercomparison of the pan-Arctic ice algal productivity on seasonal and decadal timescales2018

    • Author(s)
      Watanabe, E., M. Jin, H. Hayashida, J. Zhang, and N. Steiner
    • Organizer
      America Geophysical Union (AGU) Fall Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Lateral advection of biogenic particles in the southwestern Canada Basin, Arctic Ocean2018

    • Author(s)
      小野寺 丈尚太郎,渡邉 英嗣,溝端 浩平,田中 裕一郎,伊東 素代,原田 尚美
    • Organizer
      日本地球惑星科学連合大会 (JpGU)
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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