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Responses of stream and riparian ecosystems to the regime shifts of flow, sediment, and forest, according to changes in resource management and climate change

Research Project

Project/Area Number 18H03407
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 InstitutionHokkaido University

Principal Investigator

Nakamura Futoshi  北海道大学, 農学研究院, 教授 (90172436)

Co-Investigator(Kenkyū-buntansha) 萱場 祐一  国立研究開発法人土木研究所, 土木研究所(つくば中央研究所), 研究グループ長 (00355827)
山浦 悠一  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 (20580947)
根岸 淳二郎  北海道大学, 地球環境科学研究院, 准教授 (90423029)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2020: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Keywords気候変動 / 樹林化 / 分断化 / 流木 / 河床低下 / 河道の樹林化 / 洪水撹乱 / 河畔域 / 鳥類 / 連結性 / 資源利用 / レジームシフト / 河川生態系 / 水辺生態系
Outline of Final Research Achievements

The effects of changes in land resource use over the past 50-100 years were examined from the perspective of water, sediment, and forest regime changes, and the results showed that (1) the drivers of forestation (increase in forested areas) could be divided into four patterns: decrease in disturbed areas (water areas + bare land), decrease in grasslands, decrease in artificial areas, and decrease in complex land cover. We were also able to visualize the use of forest vegetation in the riparian area by hatchling aquatic insects in the horizontal and vertical directions, with many hatchling adults widely using the area up to 100 m in the horizontal direction and 5-10 m in the vertical direction. In addition, the effects of land use change on bird communities were estimated for the Ishikari Plain, and it was estimated that wetland, grassland, and forest bird species other than bare-land birds had greatly reduced their populations over the past 160 years.

Academic Significance and Societal Importance of the Research Achievements

日本の流域生態系を構成する水(流況)、土砂(流砂)、森林の関係は、戦後の資源のアンダーユーズとダム建設等により、森林の成長と拡大、流況の安定、流砂の減少、氾濫原の樹林化、河床低下が全国規模で起こっている。本研究によって、そのメカニズムの一部が解明できたことは意義深い。
また、こうしたレジームシフトがもたらす生態系への影響について、水生昆虫、魚類、鳥類の種数、個体数、分布域の変化から明らかにした。これらの成果は、将来の資源利用や土地利用の秩序化に役立つものであり、気候変動下におけるシナリオ分析によって、生態系の変化を予測するための基礎情報を提供することができる。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (7 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Book (1 results)

  • [Journal Article] Quantifying the impacts of 166 years of land cover change on lowland bird communities2022

    • Author(s)
      Munehiro Kitazawa, Yuichi Yamaura, Masayuki Senzaki, Masashi Hanioka, Haruka Ohashi, Michio Oguro, Tetsuya Matsui, Futoshi Nakamura
    • Journal Title

      Proceedings of the Royal Society B

      Volume: 289 Issue: 1975 Pages: 20220338-20220338

    • DOI

      10.1098/rspb.2022.0338

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Disturbance legacy of a 100-year flood event: large wood accelerates plant diversity resilience on gravel-bed rivers2022

    • Author(s)
      Uchida Kei、Okazaki Azumi、Akasaka Takumi、Negishi Junjiro N.、Nakamura Futoshi
    • Journal Title

      Journal of Environmental Management

      Volume: 317 Pages: 115467-115467

    • DOI

      10.1016/j.jenvman.2022.115467

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimates of resource transfer via winged adult insects from the hyporheic zone in a gravel‐bed river2021

    • Author(s)
      Rahman Mirza A. T. M. Tanvir、Negishi Junjiro N.、Akasaka Takumi、Nakamura Futoshi
    • Journal Title

      Ecology and Evolution

      Volume: - Issue: 9 Pages: 4656-4669

    • DOI

      10.1002/ece3.7366

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Conservation values of abandoned farmland for birds: a functional group approach2021

    • Author(s)
      Kitazawa Munehiro、Yamaura Yuichi、Kawamura Kazuhiro、Senzaki Masayuki、Yamanaka Satoshi、Hanioka Masashi、Nakamura Futoshi
    • Journal Title

      Biodiversity and Conservation

      Volume: 30 Issue: 7 Pages: 2017-2032

    • DOI

      10.1007/s10531-021-02178-8

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A strategic sampling design revealed the local genetic structure of cold-water fluvial sculpin: a focus on groundwater-dependent water temperature heterogeneity2021

    • Author(s)
      Nakajima Souta、Sueyoshi Masanao、Hirota Shun K.、Ishiyama Nobuo、Matsuo Ayumi、Suyama Yoshihisa、Nakamura Futoshi
    • Journal Title

      Heredity

      Volume: 127 Issue: 4 Pages: 413-422

    • DOI

      10.1038/s41437-021-00468-z

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Restoration of the shifting mosaic of floodplain forests under a flow regime altered by a dam2020

    • Author(s)
      Nakamura Futoshi、Watanabe Yasuharu、Negishi Junjiro、Akasaka Takumi、Yabuhara Yuki、Terui Akira、Yamanaka Satoshi、Konno Miwa
    • Journal Title

      Ecological Engineering

      Volume: 157 Pages: 105974-105974

    • DOI

      10.1016/j.ecoleng.2020.105974

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Book] 河道内氾濫原の保全と再生2019

    • Author(s)
      応用生態工学会編
    • Total Pages
      216
    • Publisher
      技報堂出版
    • ISBN
      9784765534758
    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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