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Pollination in urban ecosystems
Krygielová, Anna ; Janovský, Zdeněk (advisor) ; Mikát, Michael (referee)
Pollination success in the urban area mainly depends on the characteristics of plant populations and their pollinators, which are determined by the structure and characteristics of the urban ecosystem. Urbanization is a complex and uneven integration of landscape attributes such as habitat fragmentation, a high proportion of built-up area, the often limited size of green areas, and lower connectivity between them. These particular predictors have different effects on plant and pollinator abundance and species diversity. In general, an increasing level of urbanisation reduces the quantity and quality of pollination and therefore negatively affects the reproductive success of plants. On the other hand, in comparison with intensive agricultural landscapes urban areas (especially urban fringes and semi-natural urban areas) can contribute to the diversity, abundance, and reproductive success of plants and the diversity and abundance of their pollinators. This potentially positive influence of the city on biodiversity can be further developed through effective urban planning and appropriate management of existing public and private green areas in the city. Keywords: pollination, urban ecosystems, urbanisation, urban characteristics, urban green spaces, plant-pollinator interactions, plant reproductive success
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The origins of Bohemian Oppida: The Role of the Mediterranean and the Urbanisation processes in the European Iron Age
Kysela, Jan ; Salač, Vladimír (advisor) ; Bouzek, Jan (referee) ; Vitali, Daniele (referee)
The presented study analyses on the example of Bohemia the question in what extent the creation of oppida (and more broadly the cultural transformation of the Transalpine world in the recent La Tène period) were influenced by Mediterranean impulses and to what extent they may be on the other hand considered as a local phenomenon. The historical and chronological background are studied in detail, the question itself is approached by an analysis of the corpus of Mediterranean imports in central Europe intended to evaluate the role of Bohemia (within the central European context) in the contacts with the Mediterranean. In the concluding chapter the oppida and their settlement systems are confronted with the Mediterranean towns. The contacts with the Mediterranean turn out to have been constant and significant for the Transalpine word, the oppida, however, seem to be a largely local phenomenon. Powered by TCPDF (www.tcpdf.org)
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