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Occurrence and habitat selection of Common wood pigeon (\kur{Columba palumbus)} in the urban environment.
MELNYK, Andrii
The bachelor thesis focuses on the study of the abundance and habitat requirements of the wood pigeon (Columba palumbus) in different environments. It analyses the adaptation of the wood pigeon (Columba palumbus) to urban environments and its ecology in urbanized areas. The results show that most pigeons were found in the park zone, where most nests were also found. Fewer pigeons and nests were found in the urban environment compared to the park zone, while the agricultural habitat had the fewest pigeons and nests. The average number of pigeons per hectare and the number of nests per hectare were also calculated for each habitat and showed differences in population density between them. The work also focuses on factors affecting the occurrence and abundance of the wood pigeon (Columba palumbus) in urban environments, such as food availability, nesting sites and suitable climatic conditions. The aim of this thesis is to obtain more detailed information on the adaptation of the homing pigeon to the urban environment and its ecology, which may contribute to a better understanding of the relationships between the urban environment and bird habitat.
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Habitatové preference, stanovištní dynamika a management hmyzu vázaného na staré stromy
PLÁTEK, Michal
The thesis presents studies on habitat preferences of beetles associated with senescent, open-grown trees and on dynamics and management of saproxylic habitats. It presents a brief insight into the current issues in the conservation of insects dependent on old trees. It presents the patterns of exploitation by a veteran tree specialist within old open-grown trees and the local patterns of tree exploitation by the same species at sites with different characteristics. Further, it presents a study of the effect of a prunning technique on formation of deadwood microhabitats, and also the importance of active interventions in closed-canopy forests for the communities in temperate lowland woodlands.
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Vegetation characteristics of localities and distribution of Ophrys insectifera in the Czech Republic
Rybová, Barbora ; Novák, Jan (advisor) ; Hamerský, Roman (referee)
Ophrys insectifera is a critically endangered species of orchid in the Czech Republic. It is characterized by the formation of sexually deceptive flowers, binding to specific pollina- tors and specific fungi in its mycorrhizal dependence. The bachelor's thesis describes O. insectifera, its occurrence in European countries (England and Ireland, the Netherlands, Serbia, Latvia, and Bulgaria), locations of its occurrence in the Czech Republic, and its risk factors. O. insectifera is considered the northernmost species of the genus Ophrys due to its occurrence in Norway. In all selected European countries, the distribution of O. insectifera is threatened. The threatening risks are: shading, rainy and cold climate, and sensitivity to ecological factors in the southernmost regions of its distribution. In the Czech Republic, O. insectifera was most often recorded on xerothermic grasslands of calcareous soil and in basophilic, more lighted parts of pine forests. The thesis also includes an overview of the recorded regions where O. insectifera was found in a particu- lar year. It has been established that the largest number of regions where O. insectifera was found was between the years of 1950 and 2000. This result may indicate the largest number of regions where O. insectifera population is currently...
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Germination requirements of rare and common plant species of Giant Mountains
Paulů, Andrea ; Münzbergová, Zuzana (advisor) ; Moravcová, Lenka (referee)
For a long time studies were focused on searching optimal conditions of germination of individual species. During the last few years studies have started to search for a relationship between germination and various species characteristics. Most of them, however, use only one temperature during germination tests. Very few studies use more than one temperature during the germination tests. In the last years studies started also to compare germination between rare and common species, but these studies compare just a few species. There are no studies which would compare germination on broader range of species. Aim of this study was to indentify which factors are determing germination of species and to find relationships between germination and characteristics of rare species (n=62). Another aim was to find out differences in germination of pairs (n=24) of closely related rare and common species. To test the germination I have chosen a methodology with several consecutive temperatures. Throughout the time of testing , the seeds were placed either in light or in dark. The dataset was processed by linear regression. The results show that germination requirements of species are determinet by time of flowering, weight of seeds, dispersal mode, species requirements for soil humidity and nutrients and type of...
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Germination requirements of rare and common plant species of Giant Mountains
Paulů, Andrea ; Münzbergová, Zuzana (advisor) ; Moravcová, Lenka (referee)
For a long time studies were focused on searching optimal conditions of germination of individual species. During the last few years studies have started to search for a relationship between germination and various species characteristics. Most of them, however, use only one temperature during germination tests. Very few studies use more than one temperature during the germination tests. In the last years studies started also to compare germination between rare and common species, but these studies compare just a few species. There are no studies which would compare germination on broader range of species. Aim of this study was to indentify which factors are determing germination of species and to find relationships between germination and characteristics of rare species (n=62). Another aim was to find out differences in germination of pairs (n=24) of closely related rare and common species. To test the germination I have chosen a methodology with several consecutive temperatures. Throughout the time of testing , the seeds were placed either in light or in dark. The dataset was processed by linear regression. The results show that germination requirements of species are determinet by time of flowering, weight of seeds, dispersal mode, species requirements for soil humidity and nutrients and type of...
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Characteristics of cultivar composition of lupine in the Czech Republic
VOKURKA, Ondřej
This work deals through the method of library research with the current state and options of lupines growing in the Czech Republic, with a closer look on their cultivar composition. Initial characterisation of the vast genus Lupinus and chapters about history, contemporary significance and utilisation of lupine are followed by detailed botanical description of cultural species of this genus. Special attention is given to the growing season, as it is a significant factor that influences the potential of lupines growing in the Czech Republic. The following chapters deal with necessary facts about the habitat requirements of particular lupine species and the agrotechnical principles followed when growing lupines. Then the particular species are examined according to their significance, botanical description and environmental demands. The research concludes with a sketch of the breeding trends and characterisation of the available cultivar composition, including description of lupine varieties currently registered in the Czech Republic.
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