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Arctic ocean acidification and its impact on marine organism

Research Project

Project/Area Number 19K03970
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17020:Atmospheric and hydrospheric sciences-related
Research InstitutionTokyo University of Marine Science and Technology

Principal Investigator

Kawai Michiyo  東京海洋大学, 学術研究院, 准教授 (50601382)

Co-Investigator(Kenkyū-buntansha) 木元 克典  国立研究開発法人海洋研究開発機構, 地球環境部門(地球表層システム研究センター), グループリーダー代理 (40359162)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords海洋酸性化 / 北極海 / 酸性化 / 過飽和水 / 未飽和水 / 殻の状態 / 翼足類 / カナダ海盆
Outline of Research at the Start

酸性化と温暖化が他の海よりも先んじて進行している北極海で,「人為起源の環境変化により,炭酸カルシウムの殻をもつ翼足類にとって殻の形成が困難となり,個体数の減少につながっている」ことを証明するため,北極海の翼足類の殻密度を測定し,水温や炭酸カルシウム飽和度,二酸化炭素濃度などの現場環境との比較を行う。翼足類のサンプルは過去に北極海の0-100m層で採取されたものに加えて,本研究で新たに数10mきざみの層別採取を行い,翼足類の生息深度と現場環境との詳細な関係を明らかにする。

Outline of Final Research Achievements

The Arctic Ocean is particularly vulnerable to ocean acidification (OA). In this study, we examined the progress of OA in the Canada Basin of the Arctic Ocean over the past 18 years. The results show that aragonite unsaturated layer has thickend in both the surface and sub-surface layers. Interestingly, we also found that the thickness of oversaturated layer in the middle of the two layers did not change much. Furthermore, most of the shells Limacina helicina collected in the Canada Basin were intact, though some shells were partly dissolved.

Academic Significance and Societal Importance of the Research Achievements

人為起源CO2による海洋の酸性化が全球で進行しつつあり,生物への影響が懸念されている。北極海カナダ海盆は,ほかの海に先駆けて酸性化の影響が深刻化していると考えられている。本研究は,過去18年の観測データを解析し,カナダ海盆表層および亜表層において,酸性化により炭酸カルシウム未飽和に達した海水が表層と亜表層の両方で体積を拡大していることを明らかにした。また,現場の動物プランクトンを調査したところ,多くの個体の殻は正常であったが,一部の個体は殻の表層が溶解していることが分かった。これらの結果は,今後各地で進行する海洋酸性化の影響を予測するうえで重要な知見を与えるものである。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (27 results)

All 2023 2021 2020 2019 Other

All Int'l Joint Research (7 results) Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (12 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results)

  • [Int'l Joint Research] ウッズホール海洋研究所(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 海洋科学研究所(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 海洋科学研究所(カナダ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ウッズホール海洋研究所(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ビクトリア大学/海洋科学研究所(カナダ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Institute of Ocean Sciences, DFO/University of Victoria(カナダ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Woods Hole Oceanographic Institution(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Decadal vision in oceanography 2021: Polar oceans2021

    • Author(s)
      Yamamoto-Kawai Michiyo、Tamura Takeshi、Watanabe Eiji、Nishioka Jun、Nomura Daiki、Makabe Ryusuke、Mizobata Kohei、Sayaka Yasunaka
    • Journal Title

      Oceanography in Japan

      Volume: 30 Issue: 5 Pages: 159-178

    • DOI

      10.5928/kaiyou.30.5_159

    • NAID

      130008131962

    • ISSN
      0916-8362, 2186-3105
    • Year and Date
      2021-11-15
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ocean Acidification State in the Highly Eutrophic Tokyo Bay, Japan: Controls on Seasonal and Interannual Variability2021

    • Author(s)
      Yamamoto-Kawai Michiyo、Ito Soichiro、Kurihara Haruko、Kanda Jota
    • Journal Title

      Frontiers in Marine Science

      Volume: 8 Pages: 642041-642041

    • DOI

      10.3389/fmars.2021.642041

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [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 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two Decades of Ocean Acidification in the Surface Waters of the Beaufort Gyre, Arctic Ocean: Effects of Sea Ice Melt and Retreat From 1997?20162020

    • Author(s)
      Zhang Y.、Yamamoto‐Kawai M.、Williams W.J.
    • Journal Title

      Geophysical Research Letters

      Volume: 47 Issue: 3 Pages: 1-11

    • DOI

      10.1029/2019gl086421

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Arctic Ocean Acidification2019

    • Author(s)
      川合 美千代、張 圓昕
    • Journal Title

      Chikyukagaku

      Volume: 53 Issue: 4 Pages: 173-182

    • DOI

      10.14934/chikyukagaku.53.173

    • NAID

      130007773187

    • ISSN
      0386-4073, 2188-5923
    • Year and Date
      2019-12-25
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Interannual Variability in the Absorption and Fluorescence Characteristics of Dissolved Organic Matter in the Canada Basin Polar Mixed Waters2019

    • Author(s)
      Dainard P. G.、Gueguen C.、Yamamoto‐Kawai M.、Williams W. J.、Hutchings J. K.
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 124 Issue: 7 Pages: 5258-5269

    • DOI

      10.1029/2018jc014896

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Variations in Rates of Biological Production in the Beaufort Gyre as the Arctic Changes: Rates From 2011 to 20162019

    • Author(s)
      Ji Brenda Y.、Sandwith Zoe O.、Williams William J.、Diaconescu Oana、Ji Rubao、Li Yun、Van Scoy Emma、Yamamoto‐Kawai Michiyo、Zimmermann Sarah、Stanley Rachel H. R.
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 124 Issue: 6 Pages: 3628-3644

    • DOI

      10.1029/2018jc014805

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Analysis of the Beaufort Gyre freshwater content in 2003-20182019

    • Author(s)
      Proshutinsky, A., R. Krishfield, J. Toole, M.-L. Timmermans, W. Williams, S. Zimmerman, M. Yamamoto-Kawai, T. W. K. Armitage, D. Dukhovskoy, E. Golubeva, G. E. Manucharyan, G. Platov, E. Watanabe, T. Kikuchi, S. Nishino, M. Itoh, S.-H. Kang, K.-H. Cho, K. Tateyama, and J. Zhao
    • Journal Title

      JOURNAL OF GEOPHYSICAL RESEARCH - Oceans

      Volume: 124 Issue: 12 Pages: 9658-9689

    • DOI

      10.1029/2019jc015281

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Surface and subsurface progress of ocean acidification in the Canada Basin of the Arctic Ocean from 2003 to 20192023

    • Author(s)
      Michiyo Yamamoto-Kawai, Haruka Tsujimoto and Yuanxin Zhang
    • Organizer
      Japan Geophysical Union annual meeting
    • Related Report
      2022 Annual Research Report
  • [Presentation] Changes in biogeochemical properties in halocline layers of the Canada Basin from 2003 to 20202023

    • Author(s)
      Yamamoto-Kawai, M., H. Tsujimoto, Y. Zhang, S. Zimmermann and W. Williams
    • Organizer
      The Changing Beaufort Gyre workshop
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Seasonal variation in nutrient concentration of the Pacific-origin water from the Chukchi Sea to the Canada Basin2023

    • Author(s)
      Yamamoto-Kawai, M, and M. Itoh
    • Organizer
      International Symposium on Arctic Research 7 (ISAR-7)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temporal changes in physical and biogeochemical properties of halocline waters in the Canada Basin2023

    • Author(s)
      Tsujimoto, H., M. Yamamoto-Kawai, W. Williams
    • Organizer
      International Symposium on Arctic Research 7 (ISAR-7)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] How Much can Riverine Biogeochemical Fluxes Affect the Ocean Acidification in Arctic Seas2023

    • Author(s)
      Zhang, Y., M. Yamamoto-Kawai, E. Watanabe
    • Organizer
      Arctic Science Summit Week (ASSW) 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impacts of Riverine Carbon and Nutrient Delivery on Arctic Ocean Acidification2021

    • Author(s)
      Yuanxin Zhang, Michiyo Yamamoto-Kawai, Eiji Watanabe
    • Organizer
      JpGU
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Distribution and shell condition of Limacina helicina in aragonite unsaturated waters of the Canada Basin2021

    • Author(s)
      Yamamoto-Kawai, M., M. Seo and K. Kimoto
    • Organizer
      ESSAS
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Zhang Yuanxin, Michiyo Yamamoto-Kawai, and Eiji Watanabe2021

    • Author(s)
      Impacts of riverine carbon and nutrient delivery on Arctic Ocean acidification
    • Organizer
      ESSAS
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spreading of aragonite undersaturated water in the Canada Basin of the Arctic Ocean2021

    • Author(s)
      Tsujimoto Haruka, Michiyo Yamamoto-Kawai, Yuanxin Zhang
    • Organizer
      JpGU
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] How much can riverine biogeochemical fluxes affect the Arctic Ocean Acidification?2020

    • Author(s)
      Zhang, Y., M. Yamamoto-Kawai, E. Watanabe
    • Organizer
      日本海洋学会秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Changes in biogeochemical properties of the Canada Basin, Arctic Ocean2020

    • Author(s)
      Yamamoto-Kawai, M
    • Organizer
      JpGU online
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Changes in subsurface chlorophyll-a maximum in the Canada Basin, 2003-20192019

    • Author(s)
      Kumakawa, S. and M. Yamamoto-Kawai
    • Organizer
      The 10th Symposium on Polar Science
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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