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Management of the protected areas in sand habitats
Šímová, Kamila ; Münzbergová, Zuzana (advisor) ; Pivnička, Karel (referee)
Management of the protected areas in sand habitats is a thesis interested in the management techniques in relation to the sand habitats. In Central Europe, sand habitats are a rare and threatened grassland biotope. In the Czech Republic, we can find natural sand habitats localities, which are threatened by the human impact and anthropogenic localities, which tend to increase in number. Diversity and richness of the natural stands is gradually decreasing due to the high sensitivity of the species to any change of the local environment. These changes are mainly caused by the human activity. The negative effects are eutrophication, acidification and accelerated succession. The management of the sand habitats should contain many succession regulation tools and techniques reducing eutrophication. I discuss mowing, removal of the expansive plant species, pasturage, burning and sod disturbance or sod cutting. Each of these methods has specific impacts on the ecosystems and the best management combines them to achieve the best performance of the protected area. The most preferable method seems to be sod cutting, due to its high effectivity. However, there are many questions about sod cutting that need to be answered in a future study, such as how the population dynamics after sod cutting will look like, what the...
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Diversity of traits of aculeatan hymonopterans in habitats with finely-grained substrate
Wofková, Gabriela ; Tropek, Robert (advisor) ; Šlancarová, Jana (referee)
Natural habitats of aculeate hymenopterans are rapidly decreasing and strictly specialized species are thus going to be endangered or extinct. However, in the last decades the conservation potential of postindustrial sites has been found. There were many endangered and nationally extinct species recorded along with the drift sand specialists. However, one unclear thing remains - on postindustrial sites there were still no recordings of species that have similar biological traits to the species that are colonizing these sites. The main target of my thesis was to find traits which make it possible for the insects to colonize postindustrial sites. A matrix of 79 traits was made to describe aculeate hymenopterans biotope preferences, phenology, morphology, biogeographical area, nest, food and life history strategies. With these traits I describe 351 species systematically collected on twenty-one localities with finely - grained substrate found in Polabi and South Bohemia. These traits were tested with weighted mean abundances on type of substrate (artificial vs. sandy) with GEE analysis and the type of locality (dumping ground of coal combustion, ore and sand sludge vs. sandpits vs. natural sand) with PCoA analysis. A phylogenetic correction was incorporated in both analyzes. My results show that on...
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Population biology of Dianthus arenarius subsp. bohemicus
Špalová, Zuzana ; Raabová, Jana (referee) ; Münzbergová, Zuzana (advisor)
Dianthus arenarius subsp. bohemicus is a critically endangered plant which is endemic in the Czech Republic. The estimated number of plants is about 1400 (observation from 2008). In the Natura 2000 project Dianthus arenarius subsp. bohemicus is included among priority species. The major cause of threat of this species is probably change in land use - tree planting and the abandonment of traditional pasturage. Despite of conservation effort since seventies, population still declined until 1999 when large-scale sod-cutting was carried out. This management lead to rise of number of plants from 200 to 1400 clusters. In 2008 Ministry of the Environment of the Czech Republic approved Action plan forf Dianthus arenarius subsp. bohemicus which is now implemented. Part of this plan is a study of population dynamics of the species. This study will be an object of my Diploma thesis. This bachelor's thesis is a comprehensive literature survey about Dianthus arenarius subsp. bohemicus. In the literary overview itself there are summarized results of works, incl. the practical application of the data in conservation programs.
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Management of the protected areas in sand habitats
Šímová, Kamila ; Pivnička, Karel (referee) ; Münzbergová, Zuzana (advisor)
Management of the protected areas in sand habitats is a thesis interested in the management techniques in relation to the sand habitats. In Central Europe, sand habitats are a rare and threatened grassland biotope. In the Czech Republic, we can find natural sand habitats localities, which are threatened by the human impact and anthropogenic localities, which tend to increase in number. Diversity and richness of the natural stands is gradually decreasing due to the high sensitivity of the species to any change of the local environment. These changes are mainly caused by the human activity. The negative effects are eutrophication, acidification and accelerated succession. The management of the sand habitats should contain many succession regulation tools and techniques reducing eutrophication. I discuss mowing, removal of the expansive plant species, pasturage, burning and sod disturbance or sod cutting. Each of these methods has specific impacts on the ecosystems and the best management combines them to achieve the best performance of the protected area. The most preferable method seems to be sod cutting, due to its high effectivity. However, there are many questions about sod cutting that need to be answered in a future study, such as how the population dynamics after sod cutting will look like, what the...
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