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Vývoj úlovků ryb v údolní nádrži Dalešice na řece Jihlavě
 Gregr, Tomáš
The Bachelor thesis focuses on evaluation of caught trend in dam reservoir Dalešice (fishery Jihlava 7-8). The main object aim is to evaluate fish caught by angling in decade 2005 - 2014. Thesis focuses on predatory fish species and their ratio to other species. There is used research from 1991 - 2000 to compare results. This work discuses dam reservoirs and species structure of the fish community, compares each species of fish between them and its suitability for dam reservoirs. Amount of predatory fishes caught by anglers decreases during evaluated ten years, depending on quantity of each predatory fish species. The biggest influence had pike (Esox lucius), pikeperch (Sander luciopeca) and asp (Leuciscus aspius).The ratio between predatory fishes and other fish species depends also on proportion of each fish species to total richness of predatory fish species. In the second half of decade (since 2010) the ratio increases in fa-vour of not predatory (cyprinid) fish species.
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