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The influence of past long-term environmental change on the diversity of phytoplankton and zooplankton

Research Project

Project/Area Number 18H03414
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 64040:Social-ecological systems-related
Research InstitutionFisheries Research and Education Agency

Principal Investigator

Okumura Yutaka  国立研究開発法人水産研究・教育機構, 水産資源研究所(塩釜), 主任研究員 (80371805)

Co-Investigator(Kenkyū-buntansha) 門叶 冬樹  山形大学, 理学部, 教授 (80323161)
入月 俊明  島根大学, 学術研究院環境システム科学系, 教授 (60262937)
荒川 久幸  東京海洋大学, 学術研究院, 教授 (40242325)
松岡 裕美  高知大学, 教育研究部自然科学系理工学部門, 准教授 (60222296)
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)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords植物プランクトン / 環境DNA / 長期変動 / 植物プランクトンの群集構造 / 柱状泥 / 東北沿岸 / 気候変動 / 柱状コア / 遺伝子解析 / プラントン / 動植物プランクトン / 津波痕跡 / 津波 / プランクトン / 地球温暖化 / 堆積年代
Outline of Final Research Achievements

The relationship between environmental changes and phytoplankton diversity over the past 2,000 years was clarified by comprehensive identification of phytoplankton using DNA analysis of sediments. Phytoplankton assemblages were more diverse and dominated by diatoms after 1900, when temperatures were considered to be high. While, phytoplankton assemblages were less diverse and dominated by algae other than diatoms in the 1600s, when temperatures were considered low. Long-term temperature fluctuations and changes in phytoplankton diversity and dominant species tend to be linked, and the current phytoplankton community structure dominated by diatoms may be the result of global warming.

Academic Significance and Societal Importance of the Research Achievements

地球上の一次生産の約50%を占めるとされる植物プランクトン群集は、熱帯から極域まで海洋の至る所に生息している。植物プランクトン群集は様々なモデル計算より地球温暖化などの自然環境変化により分布や生産力などが影響を受けると予測されているが、実際に植物プランクトンの多様性が変化するのかよくわかっていない。今回東北沿岸における底泥柱状試料などの解析を行ったが、今後、熱帯域~極域における広範囲の柱状コア中の植物プランクトン群集解析を実施し、種々のモデルにできれば、地球温暖化が植物プランクトン多様性に及ぼす影響の予測精度を向上できると考える。

Report

(6 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (8 results)

All 2024 2023 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (4 results)

  • [Journal Article] Phytoplankton assemblages in Onagawa Bay from 2012 to 2013 determined by DNA sequencing and pigment analysis2024

    • Author(s)
      奥村 裕、増田 義男、鈴木 矩晃、色川 七瀬、片山 亜優
    • Journal Title

      La mer

      Volume: 61 Issue: 3-4 Pages: 259-274

    • DOI

      10.32211/lamer.61.3-4_259

    • ISSN
      0503-1540, 2434-2882
    • Year and Date
      2024-03-27
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of submarine topography and sediment environment on microbial assemblages in a coastal lagoon in northeastern Japan2023

    • Author(s)
      Okumura Yutaka、Furutono Tarou、Ito Kinuko、Hara Motoyuki
    • Journal Title

      Marine Pollution Bulletin

      Volume: 194 Pages: 115404-115404

    • DOI

      10.1016/j.marpolbul.2023.115404

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of oyster and seaweed cultivation facilities on coastal environment and eukaryote assemblages in Matsushima Bay, northeastern Honshu, Japan2023

    • Author(s)
      Okumura Yutaka、Masuda Yoshio、Matsutani Minenosuke、Shiomoto Akihiro
    • Journal Title

      Frontiers in Marine Science

      Volume: 9 Pages: 1-13

    • DOI

      10.3389/fmars.2022.1022168

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The influence and impact of tsunamis on the microorganism assembly of Nagatsura-Ura Lagoon, Miyagi, northeastern Japan2020

    • Author(s)
      Okumura Yutaka、Matsuoka Hiromi、Arakawa Hisayuki、Tokanai Fuyuki、Suzuki Atsushi、Irizuki Toshiaki、Kajita Hiroto、Hara Motoyuki
    • Journal Title

      Fisheries Science

      Volume: 87 Issue: 1 Pages: 121-130

    • DOI

      10.1007/s12562-020-01472-8

    • NAID

      40022461826

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 5)植物プランクトン群集の震災影響や長期変動-底泥試料を中心に-2021

    • Author(s)
      奥村 裕、金子健司、塩本明弘
    • Organizer
      日本水産学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 2.津波による貝毒原因プランクトンの大発生とその後2021

    • Author(s)
      奥村裕・坂本節子・増田義男・田邉徹・ 加賀新之助・渡邊志穂・平譯享・中野李南子・ 一見和彦・金子健司・原素之
    • Organizer
      日本水産学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 表層泥を用いたAlexandrium属の種同定に関する プレ・スクリーニング法の開発2021

    • Author(s)
      奥村裕・坂本節子・ 藤田海音・増田義男・ 田邉徹
    • Organizer
      日本水産学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 宮城県長面浦における海底堆積物の鉛直分布2019

    • Author(s)
      奥村裕・松岡裕美・門叶冬樹・荒川久幸・鈴木淳・入月俊明・原素之
    • Organizer
      日本水産学会
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2025-01-30  

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