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Life history strategies of arbuscular mycorrhizal fungi
Fričová, Renata ; Janoušková, Martina (advisor) ; Kohout, Petr (referee)
Arbuscular mycorrhiza is a symbiotic interaction of vascular plants and arbuscular mycorrhizal (AM) fungi from subphylum Glomeromycotina. Currently, it is difficult to predict the population dynamics of AM fungal communities, mainly because little is known about their life-history strategies. However, it is clear that AM fungi differ in a range of traits. Physiological and ecological differences between AM fungi can affect the outcome of their competition as well as cooperation with the plant symbiont and the successional dynamics of the whole community. In order to advance our knowledge of AM fungal life-history strategies, it is crucial to deepen our understanding of the traits and factors that modify interactions between the symbionts. This bachelor thesis is designed as a literature survey aimed at summarizing knowledge about functional traits of AM fungi and the impact of these traits on their life-history strategies. Key words: arbuscular mycorrhizal fungi, life-history strategies, host plant, traits, mycelium, colonization, competition, community, succession
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Diversity of European freshwater cyclopoid species: phylogeny, morphology and ecology
Krajíček, Martin
Cyclopoids are together with Calanoids and Harpacticoids a part of the largest, very diverse group of crustaceans and the most numerous aquatic metazoans of the world. The history of their research goes as far back as to the beginning of 19th century when the first cyclopoid copepods were described. The taxonomy of cyclopoids started to develop gradually since that time, adding new and more detailed methods and morphological characters, as well as a certain degree of taxonomical confusion. In last decades, the molecular-genetic techniques of DNA sequencing have become available offering a new independent tool for taxonomists. This work contains different studies concerning the morphology, taxonomy, ecology, distribution and colonisation of cyclopoid copepods, with the use of molecular tools as a uniting element. Chapter 1 of this thesis summarizes basic knowledge about the taxonomy, morphology and biology of cyclopoid copepods and introduces the following chapters containing four studies presented as single publications. The taxonomy of copepods of the genus Cyclops is based mainly on the morphology which is sometimes ambivalent and some of the most problematic species groups are presented here. Chapter 2 presents our unique results, the first reconstruction of phylogenetic relationships among 15...
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Species traits and ecological conditions linked to bird colonisation of cities
Grünwald, Jan ; Reif, Jiří (advisor) ; Sedláček, Ondřej (referee)
Human settlements are a novel habitat type and species must respond to its ongoing expansion. For effective conservation of biodiversity, it is important to understand the mechanisms underlying these responses. This thesis focuses on urbanization in birds, from both the individual and community perspectives. The aim of this thesis is to find out if there are any "pre-adaptations" in some bird species to be successful city dwellers or if all birds can potentially exploit the urban environment when local conditions allow. According to the reviewed literature, I conclude that the urbanization in birds is not a universal pattern, but there are some specific traits shared by most of the urban birds. The successful urban species are mostly omnivorous or granivorous, they breed in trees or in cavities and, they are often ecological generalists. They are sometimes represented by non-native species occurring in the cities all over the world.
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Comparison of selected traits at conspecific plants in disturbed and stressed environments localized within industrial waste deposits and their surroundings in landscape
Glier, Adam ; Kovář, Pavel (advisor) ; Štefánek, Michal (referee)
This study is oriented on the assessment of selected traits at conspecific plant which spontaneously colonize interior space within abandoned industrial area and/or deposits, and those ones occurred in adjacent vicinity. The work continues in previous studies concentrated on abandoned mine tailing containments where some important outputs consist of differences in plant adaptive strategies, growth rate, phenology, body size, ways of dispersal, ecophysiological or genetic parameters (Bryndová et Kovář 2004, Mrázek 2004, Zákravský et al. 2004, Jarolímová 2004, Kovář et al. 2004, Jiráčková et Dostál 2004, Kovář et Herben 2004, Dostál et Kovář 2013, Štefánek 2015, Urbanová et al. 2017). A part of the study includes the significance of small and large genomes at both types of habitats within defined phylogenetic framework. In other words - testing of the hypothesis: There is functional significance of small versus large genomes of plant species by comparing their occurrence in unreclaimed toxic deposits (landscape islands) with their populations from neighbouring habitats (large scale level). Key words unreclaimed industrial deposits in landscape, abandoned mine tailings, genome size, flow cytometry, conspecific taxons, plant traits, colonization, succession, disturbance, stress, restoration ecology,...
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Phylogeography and population structure of two loach species (Teleostei: Nemacheilidae) in Southeast Asia
Dvořák, Tomáš ; Bohlen, Jörg (advisor) ; Říčan, Oldřich (referee)
The freshwater fish species Schistura robertsi and Paracanthocobitis zonalternans belong to the family Nemacheilidae, which is distributed across whole Eurasia and with one species in northeast Africa. P. zonalternans occurs in lowland habitats through western Southeast Asia from Central Myanmar until northern Malaysia. The distribution area is of biogeographic interest, because it crosses several known biogeographic barriers, namely the border between Indian and Indochinese freshwater fauna along the Salween River, the Isthmus of Kra, the Krabi - Surat Thani line and the Kangar - Pattani line. In the present study, around 250 specimens of P. zonalternans from 62 localities across the whole distribution area were investigated using genetic (nuclear and mitochondrial sequences), morphologic and geologic data. The genetic data reveal the existence of seven major clades within the analysed material, each of them with a distinct geographic distribution area and only few cases of overlap, but with occurrence of some cases of secondary contact. Divergence time estimations suggested that P. zonalternans is about 18 my old, and a biogeographic analysis located the region of origin in the Tenasserim region (nowadays southern Myanmar). The global sea level fluctuations seem to have had a strong impact on the...
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Terraforming Mars
Gabriel, Michael ; Frlorián,, Miloš (referee) ; Mléčka, Jan (advisor)
Terraforming mars by autonomous robotic building system, inspired by social insect. Idea design of robotic solution, their transportation and software. Design of structures builded by robots and their function. Pyramidal structures interwoven with ice tunnel, heat the atmosphere of Mars and accumulate heat in their mass. These structures are built with cheap and simple robots that mimic the behavior of social insects.
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Imigrace z Afriky do vybraných zemí Evropské unie
Priegerová, Tereza
The thesis is focused on African imigration to European Union countries, discusses the reasons for immigration from African countries, the immigration policy of the EU countries, but also finding similarities between European Union member states in the categories of age, education, employment African immigrants and other, using the cluster analysis.
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From monasteries to men. The significance of monastic architecture and its art in the New Spain of 16th century
Brenišínová, Monika ; Křížová, Markéta (advisor) ; Štěpánek, Pavel (referee) ; Marek, Pavel (referee)
In my dissertation, I inquire into the phenomenon of monastic architecture and its plastic decoration in 16th century New Spain. The aim of this work is to present Mexican monasteries and their artistic significance. In my analysis, I build on the interpretation of monastic architecture from the perspective of early colonial society, I also reflect on the individual level, assessing its impact on the conquest and colonization of America. The methodology of this research project combines analysis of historical (e.g. study of historical sources) and art historical processes (iconological analysis of E. Panofsky) with analysis of anthropological concepts (e.g. rituals of transition of A. van Gennep, thick description of Cl. Geertz, concepts of liminality, structure and communitas of V. Turner). During my PhD studies, I conducted a field trip in Central Mexico (2013), supported by a grant from the Government of Mexico. I visited and documented one hundred and sixteen monasteries and the photographic documentation is the main empirical source of my analysis which further draws from the study of historical sources and academic literature. My research primarily focuses on three aspects: 1. the monastic architecture and art; 2. the role of the monastery in the process of European conquest and colonization...
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Diversity of European freshwater cyclopoid species: phylogeny, morphology and ecology
Krajíček, Martin
Cyclopoids are together with Calanoids and Harpacticoids a part of the largest, very diverse group of crustaceans and the most numerous aquatic metazoans of the world. The history of their research goes as far back as to the beginning of 19th century when the first cyclopoid copepods were described. The taxonomy of cyclopoids started to develop gradually since that time, adding new and more detailed methods and morphological characters, as well as a certain degree of taxonomical confusion. In last decades, the molecular-genetic techniques of DNA sequencing have become available offering a new independent tool for taxonomists. This work contains different studies concerning the morphology, taxonomy, ecology, distribution and colonisation of cyclopoid copepods, with the use of molecular tools as a uniting element. Chapter 1 of this thesis summarizes basic knowledge about the taxonomy, morphology and biology of cyclopoid copepods and introduces the following chapters containing four studies presented as single publications. The taxonomy of copepods of the genus Cyclops is based mainly on the morphology which is sometimes ambivalent and some of the most problematic species groups are presented here. Chapter 2 presents our unique results, the first reconstruction of phylogenetic relationships among 15...
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Selected aspects of US foreign policy during period of decolonization
Urbánek, Daniel ; Romancov, Michael (advisor) ; Soukup, Jaromír (referee)
This bachelor thesis is focused on position of the United States of America towards the process of decolonization and its purpose is to identify if American steps in this context were guided by idealistic or realistic motives. After a short definition of these two paradigms and description of the mechanism of American foreign policy the thesis introduces traditions affecting that policy, mostly focusing on the tradition of isolationism. Main part of the thesis is divided into two segments - in the first one, four political programs concerning the United States are analyzed, sources being the Monroe Doctrine, the Fourteen Points of President Wilson, the Atlantic Charter and the UN Charter. In this part, contribution of these programs to the process of decolonization is emphasized together with the identification of idealistic or realistic characteristics. The second segment offers a case study focused on the Suez Crisis - the moment, when the United States practically intervened against European colonial powers. Powered by TCPDF (www.tcpdf.org)
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