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Evaluation of river improvement works based on benthic animal fauna

Research Project

Project/Area Number 13650594
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Civil and environmental engineering
Research InstitutionIwate University

Principal Investigator

UMITA Teruyuki  Iwate University, Faculty of Engineering, Professor, 工学部, 教授 (30117072)

Co-Investigator(Kenkyū-buntansha) ITO Ayumi  Iwate University, Faculty of Engineering, Professor, 工学部, 助教授 (90312511)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2003: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2002: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2001: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsRiver improvement work / Benthic animal / Forest of riverside / River environment / Community structure of benthic fauna / 評価
Research Abstract

Evaluation of river improvement works was conducted based on the water quality and water insects obtained in the River Yukiya and the River Miyamori in Iwate prefecture. Immediately after the river improvement work the number of individuals and taxa of aquatic insects was very small and the burrowing type of insects was predominant and then the net-spinning type. It was found that the community structure of aquatic insect could recover in several months if the condition of riverbed, inflow of tributary and runup of aquatic insects were arranged well. It was shown that the high turbidity water caused by river improvement works did not damage the biota of aquatic insects seriously.
The riparian forest located in the upper and middle water regions in the River Miyamori increased the flux of flowing organic matter and the amount of organic matter in the riverbed, resulting in an increase in the number of individuals and taxa of aquatic insects. The individual number of shredder and the flux of flowing organic matter with a size of more than 3.35 mm had a good correlation and the value of Shannon Diversity Index of aquatic insect was increased. The importance of riparian forest on river water environment was clearly shown.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 伊藤歩, 石毛孝慈, 佐々木貴史, 相澤治郎, 海田輝之: "河川改修工事後における水生昆虫相の回復過程の評価について"環境工学研究論文集. 39. 449-458 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 相澤治郎, 伊藤歩, 石毛孝慈, 荒川真輔, 海田輝之: "中小河川における水生昆虫相の多様性に及ぼす河畔林の影響"環境工学研究論文集. 40. 109-116 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Ayumi Ito et al.: "Evaluation of recovery process of aquatic insects after river improvement works (in Japanese)"Environmental Engineering Research. Vol.39. 449-458 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Jiro Aizawa et al.: "Effect of riparian forest on diversity of aquatic insects in a middle-small size river (in Japanese),"Environmental Engineering Research. Vol.40. 109-116 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 伊藤歩, 石毛孝慈, 佐々木貴史, 相澤治郎, 海田輝之: "河川改修工事後における水生昆虫相の回復過程の評価について"環境工学研究論文集. 39. 449-458 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] 相澤治郎, 伊藤歩, 石毛孝慈, 荒川真輔, 海田輝之: "中小河川における水生昆虫相の多様性に及ぼす河畔林の影響"環境工学研究論文集. 40. 109-116 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 伊藤歩, 石毛孝慈, 佐々木貴史, 相澤治郎, 海田輝之: "河川改修工事後における水生昆虫相の回復過程の評価について"環境工学研究論文集. 39. 449-458 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 石毛孝慈, 伊藤歩, 海田輝之: "河川改修工事が水環境に及ぼす影響について-岩手県雪谷川を例にして-"土木学会東北支部技術研究発表会講演概要. (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] 井上一弥, 伊藤歩, 海田輝之: "水生昆虫相を用いた種々の多自然型工法河川の評価について"土木学会東北支部技術研究発表会講演概要. (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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