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Evaluation of erosion and runoff conditions in the Fryšávka basin
Špaček, Ondřej ; Kulihová, Martina (referee) ; Sobotková, Veronika (advisor)
Bachelor thesis is focused on the evaluation of the erosion and runoff conditions in the basin of the Fryšávka river. The objective of the thesis is the analysis of the soil loss, identification of critical points and profiles, determination of their characteristics and overall assessment of the vulnerability of cadastral territories. Analyses were carried out according to the applicable methodologies, with the use of programs ArcGIS, USLE2D and DesQ-MaxQ. In the assessed territory has been identified 6 critical points and 31 critical profiles. In twenty of them was carried out the calculation of flow rates. The calculated data was complemented by field research and photo documentation. From the evaluated data of the erosion and runoff conditions was made a ranking of the vulnerability. At the conclusion of the thesis are recommended the most vulnerable cadastral territories for further analyses and design of soil and water conservation measures which would mitigate the negative consequences of the identified unfavourable conditions.
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Revize hospodaření na malém pstruhovém toku
Gregr, Tomáš
This diploma thesis is focused on changes of the fish assemblages at two small trout brooks, more precisely on two fishing districts in the past 20 years. On the rivulet Frysavka (district Frysavka 1) and Bily brook (district Bily potok 1) was made an ichtyological survey by electrofishing. The survey was carried out at the same localities as did Machalík (1992) and Lusk (1991). Results of all surveys was compared and statistically evaluated. Together with ichtyological survey was sampled the zoobentos and measured the water discharge. Next part of thesis contains the evaluation of fisheries management level. At all monitoring sites of both brooks was found a decrease of fish assemblage abundance in past twenty years. The decrease of brown trout abundance at the Bily brook was 91 % and 100% decrease of grayling. The abundance of Frysavky rivulet declined of 75 % (compared with Lusk, 1991). The sampling of zoobenthos shown sufficient presence of natural food supply. Continual deterioration on hydrological conditions, lack of shelters and risk of predation were found to be the reason of severe drop in the fish assemblage abundance.
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Evaluation of erosion and runoff conditions in the Fryšávka basin
Špaček, Ondřej ; Kulihová, Martina (referee) ; Sobotková, Veronika (advisor)
Bachelor thesis is focused on the evaluation of the erosion and runoff conditions in the basin of the Fryšávka river. The objective of the thesis is the analysis of the soil loss, identification of critical points and profiles, determination of their characteristics and overall assessment of the vulnerability of cadastral territories. Analyses were carried out according to the applicable methodologies, with the use of programs ArcGIS, USLE2D and DesQ-MaxQ. In the assessed territory has been identified 6 critical points and 31 critical profiles. In twenty of them was carried out the calculation of flow rates. The calculated data was complemented by field research and photo documentation. From the evaluated data of the erosion and runoff conditions was made a ranking of the vulnerability. At the conclusion of the thesis are recommended the most vulnerable cadastral territories for further analyses and design of soil and water conservation measures which would mitigate the negative consequences of the identified unfavourable conditions.
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