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Identification of meteorological factors affecting stable oxygen isotope ratios in seeds

Research Project

Project/Area Number 21K19155
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 40:Forestry and forest products science, applied aquatic science, and related fields
Research InstitutionForest Research and Management Organization

Principal Investigator

Naoe Shoji  国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (80732247)

Co-Investigator(Kenkyū-buntansha) 柴田 銃江  国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (10343807)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2023: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords同位体 / 種子散布 / 気象要因 / 過去 / 長距離散布 / 風散布
Outline of Research at the Start

本研究では、種子の酸素同位体比に影響する気象要因を特定することで、過去の長距離種子散布の評価を可能にすることを目的としている。長距離の種子散布は植物の分布拡大や温暖化・寒冷化に対応した移動などに大きな役割を果たしている。本研究では、種子の酸素同位体比を利用した長距離散布の評価手法を発展させることで、過去の長距離散布が評価できる手法を開発する。この手法を用いて記録的な長距離散布の検出に挑戦する。

Outline of Final Research Achievements

The purpose of this research was to develop a method for evaluating past long-distance dispersal by developing a method for evaluating long-distance dispersal using the oxygen isotope ratio of seeds. In order to clarify the relationship between the oxygen isotope ratio of seeds and climatic factors, which is a prerequisite for evaluating past seed dispersal, we investigated the oxygen isotope ratio of seeds of Carpinus tschonoskii and Betula grossa whose seeds were obtained over 15 years. When we analyzed the relationship between the oxygen isotope ratio of these seeds and temperature and precipitation, we detected a positive correlation with the average temperature during the seed formation period of Carpinus tschonoskii. However, the correlation was weak, and it was not possible to evaluate past seed dispersal based on meteorological data.

Academic Significance and Societal Importance of the Research Achievements

一連の研究から、気温は種子の酸素同位体比の影響要因になりうることが明らかになった。本研究の結果は過去の気象データをもとに過去の種子散布評価が可能であることを示唆している。本手法によって過去の記録的なイベント(超大型台風など)によって引き起こされた長距離種子散布が実測できるようになれば、気候変動下での植物の移動分散のポテンシャルを明らかにできる。しかし、今回は種子の酸素同位体比と気象要因との相関が弱く過去の種子散布評価までには至らなかった。そのため、今後は別の気象要因の探索や分析手法の改善などを進めていく必要がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2024 2023 2022

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Flora list of wild vascular plants in and around Ogawa research site of Japan2024

    • Author(s)
      設樂 拓人、直江 将司、柴田 銃江、松井 哲哉、新山 馨、田中 浩、中静 透
    • Journal Title

      Bulletin of the Forestry and Forest Products Research Institute

      Volume: 23 Issue: 1 Pages: 29-34

    • DOI

      10.20756/ffpri.23.1_29

    • ISSN
      0916-4405, 2189-9363
    • Year and Date
      2024-03-28
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Linking seed size and number to trait syndromes in trees2023

    • Author(s)
      Bogdziewicz, M. et al. (全96人中37番目にK. Hoshizaki)
    • Journal Title

      Global Ecology and Biogeography

      Volume: 32 Issue: 5 Pages: 683-694

    • DOI

      10.1111/geb.13652

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Masting is uncommon in trees that depend on mutualist dispersers in the context of global climate and fertility gradients2023

    • Author(s)
      Tong Qiu、SHIBATA Mitsue(柴田銃江、95人中77番目) et al.
    • Journal Title

      Nature Plants

      Volume: 9(7) Issue: 7 Pages: 1044-1056

    • DOI

      10.1038/s41477-023-01446-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Competitive ability of dwarf bamboo (<scp><i>Sasa borealis</i></scp>) through long‐term clonal growth in mixed dwarf bamboo communities in the understory of a temperate deciduous forest2023

    • Author(s)
      Niiyama Kaoru、Shibata Mitsue、Saitoh Tomoyuki、Naoe Shoji
    • Journal Title

      Plant Species Biology

      Volume: 39 Issue: 1 Pages: 14-25

    • DOI

      10.1111/1442-1984.12437

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] 樹木サイズが種子の酸素同位体比に与える影響:種子散布の観点から2024

    • Author(s)
      直江将司、生方正俊、綱本良啓、陀安一郎
    • Organizer
      日本生態学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] カラス属の種子散布における果実選好性:新潟大学五十嵐キャンパス周辺での事例2024

    • Author(s)
      島田将吾、直江将司、柴田嶺
    • Organizer
      日本生態学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Directionality of long-distance dispersal of seeds: the role of altitudinal, latitudinal, and longitudinal seed dispersal under climate change2022

    • Author(s)
      Shoji Naoe
    • Organizer
      INTECOL2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 動物に送粉・種子散布を依存する植物群集の開花・結実フェノロジー:景観レベルの評価2022

    • Author(s)
      直江将司
    • Organizer
      日本生態学会
    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2025-01-30  

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