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Dynamics of fish spatial distribution in reservoirs
ŘÍHA, Milan
This dissertation thesis focuses on several aspects of fish ecology in reservoirs and the methodology of their sampling. It is divided to three parts. The first part focuses on the dynamics of fish distribution throughout the seasons and between day and night. The second part deals with the efficiency and the selectivity of the beach seine net, trawl and purse seine net. The third part describes the long-term development of fish populations in the Římov Reservoir.
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Methods of calculating the spatial distribution of precipitation and differences in rainfall totals in a small catchment area
VÁVRA, Miroslav
This thesis is focused on methods of calculating the spatial distribution of precipitation and differences in rainfall totals in a small catchment area. The main aim is to find methods which enable transfer of spot measurements of precipitation to spatially distributed estimation and consequently comparison of results of these methods and evaluation of their differences and accuracy. For better understanding of this problematic, precipitation and its characteristics, origin and types are described. Factors which precipitation influence are also listed further in the text. The main part of this thesis is description of methods of spatial precipitation distribution and their application in a small catchment area. Methods are listed from the most common ones (Arithmetic mean method, Thiessen polygon method, Isohyetal method) to those most recent and least applied (Hypsometric method, Inverse distance weighted method, Kriging). Thiessen polygon method and Isohyetal method are described in detail and joined by figure for better understanding. Different methods of spatial precipitation distribution calculations (Thiessen polygon method, Isohyetal method, Arithmetic mean method) were compared on one catchment area with quite surprising results. The calculated values of rainfall totals in the catchment area differed only slightly using different calculation methods. It was also stated that not even with large number of rain gages in the catchment area we aren?t able to achieve 100% calculation accuracy.
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The distribution of hotel bed capacities and the quality of accompanying services in a specified area of the Prachatice region
ČERMÁKOVÁ, Lucie
My baccalaureate work deals with the distribution of hotel bed capacities and the quality of accompanying services in a specified area of the Prachatice region. The analysis of hotel bed capacities itself has to be preceded by a physically geographical and socio-economic characteristics of the said area supplemented by local attractions and places of interes and the pre-requisitions of tourism. For the purposes of a detailed analysis, the area has been divided into separate administrative districts of municipalities and described from the point of view of accomodation services. The work os concluded with a summary of the current situation supplemented by cartograms and carto-diagrams, by visitor{\crq}s profile as well as a specification of the strong and week factors of this turist area. Proposals and design of a potential improvement of the pre-conditions of tourism development have also been outlined in my work.
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Spatial distribution of water bugs (Heteroptera: Nepomorpha) in fishponds: estimation and comparison based on results reached by classic method (netting) and method of light traps.
ČELOUDOVÁ, Monika
The aim of this methodically oriented thesis was to find spatial distribution of water bugs in fishpond by parallelly used two different sampling methods - classic method (netting) and light traps as well as to find, if sampling method can influence a result of ecological study by substantial way. Study was realized in the one locality - fishpond Polepšil (region: Vysočina: Moravskobudějovicko) in years 2007 and 2008. Spaces {--} transects for sampling were difined. Efficiency of water bug sampling by nett is conspicuously less than sampling by light traps. More species and individuals (in total sum of samples and in samples from individual transects too) were sampled by light traps under comparable conditions. Chemical yelow-green light of light traps was more attractive for water bugs than the pink one. Spatial preferences of some corixid species and their developmental stages were noted by application of light trap method of sampling. Light trap method of samplings brings more complete and valuable data for ecological studies of water bug communities.
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