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By: Tarkus, Martin - Volkmann, Christian - Drexler, Silke-Silvia - Waidbacher, Herwig - Straif, MichaelType: ArticleIn: Zoologia (Curitiba)Volume:Series:Issue:Date: 2010-02-01Page Range:Publication Info:Subjects: Aquatic ecosystems fish ecology Hydraulic engineering river management