• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Role of geology in creating climate-change refugia in stream ecosystems

Research Project

Project/Area Number 18K18221
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 64040:Social-ecological systems-related
Research InstitutionHokkaido Research Organization (2019-2021)
Hokkaido University (2018)

Principal Investigator

Ishiyama Nobuo  地方独立行政法人北海道立総合研究機構, 森林研究本部 林業試験場, 研究主任 (50780821)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords温暖化 / 河川 / 生物多様性 / 気候変動 / 地質 / 地球温暖化 / 河川生態系 / 生態系ネットワーク / 適応策 / 連続性 / 河川ネットワーク / 山地渓流
Outline of Final Research Achievements

Using statistical models, we explored the relationship between watershed geology and the mean summer water temperature of mountain streams along climate gradients in the Japanese archipelago. Summer water temperature was explained by the interaction between the watershed geology and climate in addition to independent effects. The cooling effect associated with volcanic rocks was more pronounced in streams with less summer precipitation or lower air temperatures. Scenario analyses revealed a geology-related pattern of thermal habitat loss for cold-water species. Non-volcanic streams rapidly declined in thermally suitable habitats for lotic sculpins even under the lowest emission scenario (RCP 2.6). In contrast, most volcanic streams will be sustained below the thermal threshold. Our findings highlight that watershed geology, climate variability, and their interaction should be considered simultaneously for effective management of climate-change refugia in mountain streams.

Academic Significance and Societal Importance of the Research Achievements

本研究は、温暖化下での冷水性種の生息適地の把握において、冷たい地下水の涵養量と関連する流域地質が重要であること、またその重要度が気候条件(降水量、気温)によって変化することを定量的に示した初めての研究である。日本の河川上流域には数十万基に及ぶ治山ダムがあるとされ、生息地の分断化を引き起こしてきた。しかし、老朽化や管理費の問題から維持できなくなるダムも今後増す可能性があり、こうした状況は、河川ネットワークの再生上は好機とも言える。本研究成果は、こうした今後の河川ネットワーク再生の際に、流域地質や気候を考慮して将来の生息適地を把握することで、より効果的な生物多用性保全が行えることを示している。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] The role of geology in creating stream climate-change refugia along climate gradients2022

    • Author(s)
      Ishiyama Nobuo、Sueyoshi Masanao、Jorge Garc?a Molinos、Iwasaki Kenta、Negishi N Junjiro、Koizumi Itsuro、Nagayama Shigeya、Nagasaka Akiko、Nagasaka Yu、Nakamura Futoshi
    • Journal Title

      bioRxiv

      Volume: 無

    • DOI

      10.1101/2022.05.02.490355

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Effectiveness of check-dam improvement on freshwater fishes: assessment based on long-term monitoring and environmental DNA applicability.2021

    • Author(s)
      HAYAMIZU Masato、ISHIYAMA Nobuo、MIZUMOTO Hiroki、KANBE Takashi、SHIMODA Kazutaka、MISAKA Naoyuki、URABE Hirokazu、NAGASAKA Akiko、NAGASAKA Yu、ONO Satoru、ARAKI Hitoshi、NAKAJIMA Nobuyoshi、FUKUSHIMA Michio
    • Journal Title

      Ecology and Civil Engineering

      Volume: 24 Issue: 1 Pages: 61-73

    • DOI

      10.3825/ece.20-00043

    • NAID

      130008095704

    • ISSN
      1344-3755, 1882-5974
    • Year and Date
      2021-07-28
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Combined Effects of Summer Water Temperature and Current Velocity on the Distribution of a Cold-Water-Adapted Sculpin (Cottus nozawae)2021

    • Author(s)
      Suzuki K, Ishiyama N, Koizumi I, Nakamura F.
    • Journal Title

      Water

      Volume: 13 Issue: 7 Pages: 975-985

    • DOI

      10.3390/w13070975

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Relative Effects of Biotic and Abiotic Factors on the Recruitment of Freshwater Mussels (Margaritifera laevis)2021

    • Author(s)
      Kawajiri K, Ishiyama N, Miura K, Terui A, Sueyoshi M, Nakamura F.
    • Journal Title

      Water

      Volume: 13 Issue: 9 Pages: 1289-1299

    • DOI

      10.3390/w13091289

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 気候変動下での河川ネットワーク管理2020

    • Author(s)
      石山信雄, 中田康隆, 末吉正尚
    • Journal Title

      河川

      Volume: 892 Pages: 60-65

    • Related Report
      2020 Research-status Report
  • [Presentation] 流域地質が冷水性種のClimate-change refugia形成に果たす役割2021

    • Author(s)
      石山信雄、末吉正尚、Jorge Garcia MOLINOS、 鈴木開士、小泉逸郎, 中村太士
    • Organizer
      日本生態学会第68回全国大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 流域地質が河川上流域の水温および冷水性魚類の分布・生活史に与える影響2019

    • Author(s)
      石山信雄・鈴木開士・小泉逸郎・中村太士
    • Organizer
      第 27回応用生態工学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 森林渓流の水温レジームと魚類分布: 流域地質が果たす役割2019

    • Author(s)
      石山信雄・鈴木開士・末吉正尚・小泉逸郎・中村太士
    • Organizer
      第68 回北方森林学会
    • Related Report
      2019 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi