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Recruitment suitability for Japanese tree species: a future prediction with seed dispersal, survival and germination traits

Research Project

Project/Area Number 21K05687
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40010:Forest science-related
Research InstitutionKyushu University

Principal Investigator

Kusumoto Buntaro  九州大学, 農学研究院, 助教 (90748104)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords生物多様性 / 種分布モデル / 将来予測 / 気候 / 生理特性 / 森林動態 / デモグラフィー / マクロ生態学 / 生息適地モデリング / 環境ニッチ / 天然更新 / 種子 / 種分布モデリング / 出現データ
Outline of Research at the Start

本研究では、日本の亜熱帯から温帯域を代表する広葉樹種(ブナ、クスノキ、ムクロジ、ヤナギ、カバノキなど)について、種子の散布・生存・発芽に関わる温湿度特性を調査・分析し、それらを反映した生息適地モデルを構築する。このために、1)野外観察、文献調査、物理特性測定、発芽実験を行い、種子特性の網羅的なデータベースを構築し、2)10-㎞ 2 グリッドスケールの種の出現記録と気候データを用いて、散布・定着・生存適地それぞれの地理分布を予測する生息適地モデルを構築し、3)構築したモデルを気候変動シナリオに投影し、樹木種ごとの更新適地の将来変化を予測する。

Outline of Final Research Achievements

In this project, I examined several approaches to predicting changes in distribution of tree species due to climate change and concluded that because physiological and reproductive data are scarce compared to species occurrence records, an inverse model that estimates these parameters using geographic distribution data was an effective way. In addition, to obtain demographic parameters for each tree species, we clarified species-level growth rates, mortality rates, new recruitment rates, and sprouting rates from forest monitoring data in the northern part of Okinawa Island. Furthermore, we analyzed macro-scale distribution data and seed functional characteristics to clarify the influence of climate filters.

Academic Significance and Societal Importance of the Research Achievements

気候変動に対する生物多様性の変化を予測することは、将来的な保全・再生のプランニングにおいて重要である。また、多種系を扱う上で、予測手法の主流となっている相関ベースのアプローチと、生理・生態メカニズムを組み込んだ機構論的アプローチの併用は、観測データの充実化とモデルの改良の両方の側面で重要である。

Report

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

    (5 results)

All 2023 2021 Other

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

  • [Int'l Joint Research] Nicolaus Copernicus University(ポーランド)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Royal Botanic Gardens Kew(英国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Latitudinal gradients of reproductive traits in Japanese woody plants2023

    • Author(s)
      Ulrich Werner、Kusumoto Buntarou、Shiono Takayuki、Fuji Akinori、Kubota Yasuhiro
    • Journal Title

      Ecological Research

      Volume: 38 Issue: 1 Pages: 188-199

    • DOI

      10.1111/1440-1703.12363

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Geographic patterns of seed dormancy strategies along latitudinal and climatic gradients, Japanese East Asian islands2023

    • Author(s)
      Fuji Akinori、Kusumoto Buntarou、Shiono Takayuki、Kubota Yasuhiro、Ulrich Werner、Dickie John B.、Chen Si‐Chong
    • Journal Title

      Japanese Journal of Statistics and Data Science

      Volume: 6 Issue: 2 Pages: 885-901

    • DOI

      10.1007/s42081-023-00215-0

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 生物分布の時空間予測:機構論的モデル構築に向けた課題2021

    • Author(s)
      楠本聞太郎
    • Organizer
      科研費シンポジウム 予測モデリングの理論と応用
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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