EFFECTS OF BOULDER INTERVAL OVER POOL BED IN POOL-AND-WEIR FISHWAY ON MIGRATION RATE OF <i>OPSARIICHTHYS PLATYPUS</i>

• ONITSUKA Kouki

  九州工業大学大学院 建設社会工学研究系

• AKIYAMA Juichiro

  九州工業大学大学院 建設社会工学研究系

• ARISUDA Tomoko

  （株）清水建設

• JOJI Kento

  九州工業大学大学院 工学府建設社会工学専攻

• OGATA Ryo

  九州工業大学 工学部建設社会工学科

Bibliographic Information

Other Title

• 階段式魚道の底面に設置した粗石の間隔がオイカワの遡上特性に及ぼす影響
• カイダンシキ ギョドウ ノ テイメン ニ セッチ シタ ソセキ ノ カンカク ガ オイカワ ノ ソジョウ トクセイ ニ オヨボス エイキョウ

Abstract

 It is important to keep suitable area by boulder in pool-and-weir fishway to make the migration rates of fish high. In this study, migrating behaviors of Oikawa (Opsariichthys platypus) in pool-and-weir fishway were compared with interval of boulders placed on the bottom of pool-and-weir fishway changed. Migration behaviors of Oikawa were obtained with the aid of two sets of digital video cameras. It was found that Oikawa migrates remarkably uses space between boulders with an increase of interval of boulders. It is because the velocity of this space is low as compared with the higher layer. As the result, the migration rate of Oikawa increases with an increase of the boulder interval.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 73 (4), I_409-I_414, 2017

  Japan Society of Civil Engineers

Keywords

• Opsariichthys platypus
• migration rate
• pool-and-weir fishway
• boulder

Details

• CRID: 1390001205352385664
• NII Article ID: 40021162627
• NII Article ID: 130006406243
• NII Book ID: AN10426673
• ISSN: 18808751
• ISSN: 2185467X
• ISSN: 09167374
• DOI: 10.2208/jscejhe.73.i_409
• NDL BIB ID: 028108384
• Web Site: http://id.ndl.go.jp/bib/028108384
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028108384
• Web Site: https://www.jstage.jst.go.jp/article/jscejhe/73/4/73_I_409/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed