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Biodiverzita myxozoí v přehradní nádrži Římov zjištěná analýzou environmentální DNA
BÜRGEROVÁ, Monika
Myxozoans represent a diverse group of microscopic endoparasites primarily infecting fish, including over 2,600 nominal species. Despite the extensive number of described species, their diversity remains still unexplored and underestimated. The detection and surveillance of myxozoan parasites in previously unexamined areas can reveal crucial pathogens linked to fish mortality and discover myxozoans biodiversity. This thesis investigates the parasite diversity in the Římov Reservoir, focusing on myxozoan detection through environmental DNA (eDNA). A comparison of detected diversity at various sites and in different environmental samples across the Římov Reservoir unveiled interesting patterns of read abundance and number of OTUs within each myxozoan clade. This study underscores the importance of eDNA analysis in detecting pathogens and assessing biodiversity in myxozoan parasites.
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Associations of fish with various types of littoral habitats in reservoirs
ŠMEJKAL, Marek
The study investigated fish habitat association within littoral habitat of four Czech reservoirs. Three most common habitats within reservoir: beaches (former meadows), stump fields (former forest) and rubble slopes were chosen for the study. The patterns of fish biomass, abundance and species structure were analysed based on robust data obtained from gillnet sampling. Adult bream Abramis brama, white bream Blicca bjoerkna and roach Rutilus rutilus were associated with beaches and stump fields with gentle slope of the bank, whereas perch Perca fluviatilis, ruffe Gymnocephalus cernuus, asp Leuciscus aspius and pike Esox lucius were associated with rubble slopes. We demonstrated fish species are not distributed homogeneously in the littoral and that that most common species are associated with distinct habitats.
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Interannual variability of littoral age 0+ fish in the canyon-shaped reservoir
VESELÝ, Lukáš
0+ fish communities of the littoral zone were sampled in the Římov Reservoir within the years 2007-2011. The goal of the thesis among other things was monitoring 0+ fish during five years in littoral habitats of Římov reservoir depending on year-class strength environmental factors, etc., and also find general distribution model, which can explain spatial distribution of juvenile fish in canyon-shaped reservoir. Results of this thesis could be used for another reservoirs which coincide with environmental condition of Římov reservoir.
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Merits of selected natural resource and its region development influence
VOŘÍŠKOVÁ, Alena
The topic of this thesis is the value of a selected natural resource and its influence on the region{\crq}s development. This thesis has been divided in two parts. The first part is theoretical and it defines natural resources and their evaluation. The theoretical part is concluded by information about regional politics and development. The practical part of this thesis consists of two areas. In the first one, I characterize South Bohemian region as well as Lipno reservoir. In the second one, I deal with the land prices in Lipno area and compare them to the land prices in the area around Orlik reservoir. The amount of the prices indicates differences in holiday resort values of these reservoirs and their contribution to the region{\crq}s development. The main goal of this work is to analyze, on the basis of natural resources{\crq} evaluation, the relationship between the natural resource value and economic development of the selected area of the South Bohemian region. Another significant goal is an elaboration of a survey of methods used in natural resources{\crq} evaluation, from the perspective of nonmarketable resources{\crq} evaluation as well as evaluation of any inmovable object that satisfies people{\crq}s needs. An important aim of the practical part of this thesis is a land price analysis of Lipno reservoir area. The last goal I have proposed to me is to compare the land prices around Lipno reservoir to those of Orlik reservoir. The value of an natural resource can be expressed in different ways, for example, in how much people, who use that holiday resort, esteem it. Considering the topic of my thesis, I have chosen an evaluation according to land prices. If a natural resource is valuable, then its value will be reflected in people{\crq}s willingness to pay for the possibility of living in its nearness. This is also obvious with Lipno reservoir, as the land prices there are much higher than the land prices in any other holiday resort situated near a water reservoir. Nevertheless, even here we can still find places, that have not been fully developped yet and which offer possibities of exploitation. Considering the above-mentioned findings and examples, it is obvious that Lipno water reservoir not only provides the South Bohemian region with incomes from tourisms but it also has a movable value of an ascending tendency. Despite its invaried long-time exploitation potential, its holiday resort function has caused recently, that Lipno area is being valued more and more. This tendency is reflected in the increasing prices of building estates near the reservoir, which indicates people{\crq}s willingness to pay more and more for a valuable holiday resource.
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