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Testování efektivity ochranných nátěrů před ohryzem dřevin bobrem evropským (Castor fiber)
Ševčíková, Eliška
Testing of the effectiveness of protective coating materials for preventing prowsing of woody species by Eurasian beaver (Castor fiber) This bachelor thesis deals with testing of the effectiveness of four protective coating materials for preventing browsing of woody species by the European beaver and evaluating the most effective one. Tested were commercial product Wöbra, a mix of Aversol and a material bitrex, a mix of Aversol, bitrex and silica sand, and abrasive coating material, compounds of which are a business secret. The effectiveness of these coating materials was tested in the floodplain forests, where is a long-term occurrence of the European beaver. The testing took place on standing trees, and partially on pre-felled trunks that were treated with the coating materials beforehand. The most effective of the tested protective coating materials was the commercial product Wöbra. This material was effective in 100 % of the cases of its use. Other materials showed slightly lowered effectiveness, as low as 80 %.
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Development in damage caused by conflict specially protected wild animal species in the Czech Republic
Konečná, Ludmila ; Plesník, Jan (advisor) ; Čech, Martin (referee)
The submitted M.Sc. thesis describes development in populations of the bird and mammalian species, having been involved in human - wildlife conflicts, particularly of the specially protected species, in the Czech Republic as well as in compensation payments for damages caused on private properties by the selected specially protected wild animal species. At the same time, it compares various tools, applied to solve human - willdife conflicts in the different parts of the world. The study presents information provided by governmental authorities or gained from grey literature, expert databases and scientific papers. Trends both in the development in conflict species populations and in compensation payments were assessed and the relationship between both variables was found. In total, payments for damages caused by conflict wild animal species has been increasing in the Czech Republic since 2000, but trends in the conflict species populations differ from each other, influenced particularly by their bionomics. The analysis performed shows, that the act on the topic is effective only for some of the above wild animal species. For large carnivores, namely the Grey Wolf (Canis lupus), Eurasian Lynx (Lynx lynx) and Brown Bear (Ursus arctos), the above tool does not provide suitable solutions for their...
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