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Elucidating mechanisms driving regional aquatic diversity in landscapes consisting of natural rivers, agricultural drainage channels, and spring-fed creeks

Research Project

Project/Area Number 24710269
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Resource conservation science
Research InstitutionHokkaido University

Principal Investigator

NEGISHI Junjiro  北海道大学, 地球環境科学研究科(研究院), 准教授 (90423029)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords景観 / 農地 / 河川 / 生物多様性 / 湧水 / 保全優先度 / 水生生物 / 河川管理 / 地下水 / 水温 / 羽化フェノロジー / 保全 / 生態系管理
Outline of Final Research Achievements

Fist, endangered unionoid mussels were found more in the drainage channel that had a high connectivity to the downstream rivers, and fish community with high taxonomic diversity co-occurred. Also, landscape surrounded by low levels of urbanization characterized their habitat. Second, macrophyte diversity in floodplain lakes were positively correlated with their cover area, and the quality of macrophyte habitat was the lowest in the artificially created oxbow lakes. Third, spring-fed rivers harbored unique sets of species of aquatic insects, thereby contributing to the taxonomic diversity at the watershed scale. These suggest that systematic classifications of habitat across landscapes based on landform and groundwater would facilitate efficient conservation of aquatic biodiversity.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (7 results)

All 2015 2014 2013 Other

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

  • [Journal Article] Geomorphic legacy controls macrophyte distribution within and across disconnected floodplain lakes.2014

    • Author(s)
      Negishi, J. N., Soga, M., Ishiyama, N., Suzuki, N., Yuta, T., Sueyoshi, M., ... & Yoshimura, N.
    • Journal Title

      Freshwater Biology

      Volume: 59(5) Issue: 5 Pages: 942-954

    • DOI

      10.1111/fwb.12317

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Imperiled freshwater mussels in drainage channels associated with rare agricultural landscape and diverse fish communities2014

    • Author(s)
      Negishi JN, Tamaoki H, Watanabe N, Nagayama S, Kume M, Kayaba Y, Kawase M
    • Journal Title

      limnology

      Volume: to be decided

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Interaction between patch area and shape: lakes with different formation processes have contrasting area and shape effects on macrophyte diversity2013

    • Author(s)
      Soga M, Ishiyama N, Sueyoshi M, Yamaura Y, Hayashida K, Koizumi I & Negishi JN
    • Journal Title

      Landscape and Ecological Engineering

      Volume: 未定 Issue: 3 Pages: 270-278

    • DOI

      10.1007/s10310-012-0349-y

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 陸域への資源パルスの時空間変異:河川羽化昆虫量および群集構造における河川・生息場タイプの影響2015

    • Author(s)
      根岸淳二郎他
    • Organizer
      第62回日本生態学会
    • Place of Presentation
      鹿児島
    • Year and Date
      2015-03-22
    • Related Report
      2014 Annual Research Report
  • [Presentation] Green Riverine Landscape Is Not Always a Sign of High Conservation Value: Human-altered Channel Morphology, River-floodplain Interactions, In-stream Habitat Condition, and Recreational Values.2014

    • Author(s)
      Junjiro Negishi et al.
    • Organizer
      AOGS 2014
    • Place of Presentation
      sapporo
    • Year and Date
      2014-08-01
    • Related Report
      2014 Annual Research Report
  • [Presentation] The Importance of Heterogeneity of Hydrological Processes for Aquatic Biodiversity at the Landscape Scale2014

    • Author(s)
      Nozomi Watanabe et al.
    • Organizer
      AOGS 2014
    • Place of Presentation
      sapporo
    • Year and Date
      2014-07-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] 流域スケールにおけるβ多様性維持機構の解明‐水生昆虫群集と湧水河川に着目して

    • Author(s)
      渡辺のぞみ、根岸淳二郎、布川雅典
    • Organizer
      応用生態工学会
    • Place of Presentation
      東京農業大学(東京都)
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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