EFFECTS OF DENSITY OF MESH MAT AND DISCHARGE IN FISH LADDER ON MIGRATION CHARACTERISTIC OF <i>Anguilla japonica</i>

• ONITSUKA Kouki

  九州工業大学大学院 建設社会工学研究系

• SAKO Tomoya

  九州工業大学大学院 工学府建設社会工学専攻

• MIYAGAWA Tomoyuki

  九州工業大学大学院 工学府工学専攻

• TASHIMA Ryota

  九州工業大学 工学部建設社会工学科

Bibliographic Information

Other Title

• 魚道底面に設置された立体網目状マットの密度および流量がウナギの遡上特性に及ぼす影響

Abstract

 The number of eels is decreased these days. As one of the factors about that, intake facilities and drop works prevent eels from migrating. It is reported that mesh mat is useful for migration of eels. However, there is no research on the proper geometric form for migration of eels. This study is made to evaluate migrating characteristics of eels under the condition that density of mesh mat and discharge in fish ladder are changed. As a result, it was found that migration success rate and void entry rate increased and average migration speed decreased with increacing density of mesh mat regardless of a change of the discharge.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 75 (2), I_553-I_558, 2019

  Japan Society of Civil Engineers

Keywords

• Anguilla japonica
• fish ladder for eel
• plastic density
• discharge
• migrarion rate

Details

• CRID: 1391130851448499968
• NII Article ID: 130007940250
• DOI: 10.2208/jscejhe.75.2_i_553
• ISSN: 2185467X
• Web Site: https://www.jstage.jst.go.jp/article/jscejhe/75/2/75_I_553/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed