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Effect of ponds and pond systems on the composition of the benthos in horní Lužnice
SVAČINA, Petr
The work is focused on monitoring changes in benthic communities in the longitudinal gradient of the river Lužnice. The river flows through to the pond area Třeboňsko and the largest pond of the Czech Republic - Rožmberk. It is examine affect of pond on benthic communities. The work involves collecting benthos according to the PERLA method on four profile in four seasons, the analysis of chemical parameters and data processing. The values of SI (saprobiological index) in the longitudinal gradient were from SI 1.8 to SI 2.6. SI values were at the outflow of Rožmberk higher than at inflow. The lowest values were in the first profile Suchdol (SI 1,8 ? SI 2,1) and higher values were in the last profile Vlkov (SI 2,4 ? 2,6). The chemical parameters at outflow were observed increased values of BOD5, TOC, NL105, NL505, chlorophyll and total P but lower values of nitrogen forms (Ntotal,NH4, N-NO3-). On the each profile was the significant change in the incidence or absence of certain groups. Profiles Suchdol and Hlína were diferent than Lužnice and Vlkov especially in the presence of stoneflies, dragonflies, beetles, and individuals generally indicates good water quality. Profiles at outflows from Rožmberk (Lužnice and Vlkov) showed a continued presence of bloodsuckers and more species indicating high organic pollution. NMDS method confirmed impact of sites in communities rather than period (R2 = 0.6 at significance level of p = 0.001).
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Communities of oribatid mites (Acari: Oribatida) of naturally regenerating and salvage logged mountain spruce forests of Šumava Mts
GALICOVÁ, Petra
The main aim of this study was to describe and compare communities of oribatid mites of selected areas in mountain spruce forests near Březník in the Šumava National Park, where different types of management were used after the spruce dieback caused by bark beetle gradation more than 15 years ago. Naturally regenerating and salvage logged areas were compared. Significant differences were found in the oribatid mite community composition between the areas with different types of used management. The oribatid mite community in naturally regenerating areas was in better shape and its abundance and species composition was similar to the community of a control area in a fully grown healthy spruce forest.
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Marketing communication of the brand Brit in the years 2010-2011
Veselská, Tereza ; Obluk, Ondřej (advisor) ; Klabíková Rábová, Tereza (referee)
Bachelor thesis "Marketing Communication British brand in 2010 - 2011" describes the marketing communication of the brand Brit. Brit produces the premium " Brit Pemium" and the super premium "Brit Care" food for dogs and cats on the Czech market within the last two years. The work includes basic information about the company Vafo that owns the Brit, deals with the identity and the image of the brand Brit, its market positioning and the competing products and brands (Proplan, Eukanuba, Royal Canin and Hill's). The second chapter of the thesis is devoted to the marketing communications, which also includes the description of the brand marketing mix. The third chapter focuses on the communication mix, describes the print ads, online communication (Web sites and Facebook), sales promotion (contests, monthly events), trade fairs, exhibitions and PR activities (sponsorship, donations, publicity, media relations, events and the corporate identity materials) of the brand Brit. The Brit's communication activities and the competitor's communication activities (namely Hill's and Pedigree) are compared in the 4th part. The final part of the thesis evaluates the current brand communication and suggests possible future communication activities. The descriptive method is used for the analysis carried out in the thesis.
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The influence of biotic and abiotic factors on the communities of predatory diving beetles
KOLÁŘ, Vojtěch
Diving beetles (Dytiscidae) are important inhabitants of water bodies, where their adults and larvae often represent top predators in the absence of fish. I carried out a literature review of biotic and abiotic factors that may affect the occurrence of aquatic insects with emphasis on the impact of aquaculture practises. In 2011 and 2012 I also carried out a field survey at two pond systems near Jindřichův Hradec. I used five baited traps in both the littoral zone and at the edge of the littoral zone and open water. Ponds with fish usually had very low diving beetle abundances, although one pond with fish but well-developed littoral zone had a relatively high number of species, similar to ponds without fish. My survey therefore confirmed high importance of littoral vegetation for diving beetles. This implies that intensive aquaculture practises are detrimental for the diversity of aquatic insects at a given locality. I have also found one individual of the rare diving beetle Colymbetes striatus, previously known from only a few localities in the Czech Republic.
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The effect of management on biodiversity of forest ecosystems - epigeic beetles on selected habitats of Písecko
STLUKA, Petr
Communities of epigeic beetles were studied on three forest habitats with the different forms of management in South Bohemia area, Písek district, close from Zátaví village. Selected areas were located in territory of Zátavský forest. There were these habitats: clearing, young spruce forest stands (age 6 years) and spruce forest (age 50-70 years). The method of pitfall trapping was used for biological material capture. There were 1813 specimens and 63 species of epigeic beetles trapped and determined. The highest number of species and individuals was found in spruce young forest habitat (43 species, 786 specimens), than followed spruce mature forest habitat (26 species, 550 specimens) and glade habitat (35 species, 477 specimens). Most species of epigeic beetles from 63 aggregate number of species was classed like eurytops. There were also 15 adaptable species determinated and it was found 1 genus of relict from I. degree too. It was found that spruce forest, which seems like more mature in terms of succession than young forest or glade, had no highest number of species and individuals. Conversely the largest number of species and individuals was found in spruce young forest. Index of antropogenic influence proved relatively strong antropogenic effect all studied habitats in terms of epigeic beetles. Communities of beetles were least affected in spruce forest, than followed young spruce forest and glade. From this point of view, intensity of management had the most effect on glade´s communities of beetles. Mature spruce forest had the least antropogenic influence on communities of beetles.
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Biocentres and biocorridors in agricultural landscape - importance for communities of epigeic beetles (\kur{Coleoptera})
STLUKA, Pavel
Communities of epigeic beetles were monitored on five localities, which were found in South Bohemia in Písecku. There were places located in agriculture landscape, which is affected by human activities. Selected localities were composed of biocenters and biocorridors. There were forest localities (spruce monoculture, age 60-70 years), edge of the forest, corn field and two groves with different sizes. The method of pitfall trapping was used for sampling. There were found 2409 specimens of epigeic beetles (15 families and 70 species). The highest number of epigeic beetles was found on both groves. There were found 864 individuals in smaller grove and 684 individuals of beetles in larger grove. Activity of beetles in the other localities was lesser. There were found 403 individuals on field, 333 individuals in the edge of forest and least number of beetles (125 individuals) was found in forest. Species´ spectrum of epigeic beetles was divided into three groups according by the sensitivity to antropogenic impacts (relict, adaptable and eurytop species). There were found only two last groups according by the sensitivity to antropogenic impacts of three (relict undetected). There were 51 eurytop species (E) and 19 adaptable species (R2). Counted index of antropogenic influence on communities of epigeic beetles proceeds in low values (communities are relatively strongly influenced by human). Forest habitat was affected least and corn field habitat was affected most. Groves are very strongly influenced by human too, but its values are better than values on field. Groves thus have a positive impact on communities of epigeic beetles and it can be compared with the edge of forest.
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Ecological consequences of habitat loss in landscape matrix and the effect on populations and communities of model species
HELLEBRANTOVÁ, Adéla
The effect of fragmentation on populations was studied using epigeic beetle collected by pitfall traps with ethylenglykol. Pitfall traps were placed at three sites and namely in: artifical spruce forest, bio-corridor and meadow in the vicinity of České Budějovice on agricultural landscape. The material was collected from May to September. Beetles were determined and classified into goups according to the level of tolerance to anthropogenic influence. The communities (species richness and its activity) were compared in cited biotopes (fragments) in the agricutlural landscape. The highest number of species and its activity was detected in the bio-corridor. The lowest number of species and its activity was found in the spruce forrest. Thel effect of size of biotope was not found. At a meadow and biocorridor previled beetle species named as eurytopic which are characteristic for deforested habitats strongly influenced by human activities. In the forest, the other half consisted of RII. Group, which are adaptable inhabiting habitat moderately affected by human activity.
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Diversity of rust fungi in plant communities of Oblík hill
Stodolová, Pavla ; Hanzalová, Alena (referee) ; Marková, Jaroslava (advisor)
Pavla Stodolová Diversity of rust fungi in plant communities of Oblík hill Abstract This diploma is based on previous Bc. thesis. It consists of two parts. The first part is devoted to the diversity of the rust on the locality Oblík Mt. (České středohoří Mts.). The second part includes the instruction for use of theme of the rust in biological practical lesson. The special part consists of a brief description of the locality Oblík, the methods of collecting, processing and preservation of rust and a list of hosts with their rusts and their descriptions. On the investigated area there were found 32 species of rusts. They presence was determined by the influence of several factors: the composition of surrounding vegetation, the local climate, the annual average temperature, the wind direction, the quantity of rainfall, ontogenetic development of the host plant. The occurrence of some rust species should be expected here in following year, especially the species overwintering as perennial mycelium. The occurrence of most species of rusts is difficult to predict in the future, because they spread diffusely. The special attention was paid to rust on spring plants: Uromyces muscari on Muscari tenuiflorum and Puccinia liliacearum on Ornithogalum kochii. These species were chosen because of their regular occurrence...
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