ダムが河川の底生動物へ与える影響 Effects of dams on benthic animals in streams and rivers

この論文にアクセスする

この論文をさがす

著者

    • 谷田 一三 TANIDA Kazumi
    • 大阪府立大学総合科学部自然環境科学科 Department of Integrated Arts and Sciences Osaka Prefecture University

抄録

Influences of dams on benthic animal communities in tailwater rivers were reviewed focused on changes in their species richness, population densities and biomass. It was commonly observed that the benthos communities below dams had more population densities of fewer numbers of taxa in comparison with control rivers without dam effects. However, not a few works reported different results such as a case of less species richness, less population densities and less biomass or a case of more species richness in benthos communities below reservoirs. We considered functional processes of dam effects on benthos communities in the following respects: i.e., 1) impacts of flow regime regulation including stabilization of water flow, frequent flow fluctuation by electric power station, and drought in an extreme case, 2) alteration of habitat structure such as stabilization of river bed, water courses and armoring, 3) alteration of thermal regimes derived from surface or deep waters of the reservoirs, 4) effects of siltation, 5) effects of increasing plankton supply from the reservoirs, and 6) effects of dams and reservoirs themselves as an obstacle for migration by adult aquatic insects. The importance of Serial Discontinuity Concept and its future perspectives were also discussed. In order to assess the influences of dam construction and its management properly, the SDC model should be modified to reflect individual characteristics of each river and to include influences on diadromous animals and estuarine ecosystems.

収録刊行物

  • 応用生態工学 = Ecology and civil engineering  

    応用生態工学 = Ecology and civil engineering 2(2), 153-164, 1999-11-19 

    Ecology and Civil Engineering Society

参考文献:  77件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  19件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10021975914
  • NII書誌ID(NCID)
    AA11528360
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • 雑誌種別
    大学紀要
  • ISSN
    13443755
  • NDL 記事登録ID
    4955259
  • NDL 雑誌分類
    ZN1(科学技術--建設工学・建設業) // ZR1(科学技術--生物学)
  • NDL 請求記号
    Z74-B482
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ