バーブ工によって創出された微環境に応じた魚類群集

DOI

書誌事項

タイトル別名
  • FRESHWATER FISH ASSEMBLAGE ACCORDING TO MICROHABITATS CREATED BY A BARB-STRUCTURE IN A RIVER

抄録

<p>We examined whether a barb-structure can improve fish habitats by providing various physical environment and contribute to fish assemblage consist of various fish species by a field survey in the middle reach of the Katsura River, central Japan. Species diversity H’ of fish assemblage and coefficients of variance of depth and velocity in the barb-structure site were compared to those in two sites of the neighboring runs. Diversity of fish assemblage in the barb-structure site was higher than in the other two sites. Also, the barb-structure site had wider range of depth and velocity than that in the two sites, suggesting that diverse physical environment should contribute to diversity of fish assemblage there. Each fish species indicated each localization at subunit scale within the barb-structure site, according to their habitat preference and needs. Therefore, a barb-structure can support diversity of fish assemblage by providing suitable habitats to many species. Additionally, installation of a barb-structure should be more effective in a straight channel with narrow range of physical environment.</p>

収録刊行物

キーワード

詳細情報 詳細情報について

  • CRID
    1390573242790183808
  • DOI
    10.11532/river.25.0_393
  • ISSN
    24366714
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
  • 抄録ライセンスフラグ
    使用可

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