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Diversity and succession of spontaneous vegetation in urban environment
Rejchrtová, Lucie ; Vojta, Jaroslav (advisor) ; Adámek, Martin (referee)
Urban vegetation is important due to its functions (e.g. aesthetic, spiritual, recreational, hygienic). In the city, vegetation and its succession are influenced by factors such as nature in the same or altered form. Compared to the surrounding landscape, the city's climate is warmer, the urban soil has an increased pH, it is drier, it can contain more nutrients, heavy metals and salt. In the city, human activity, and humans themselves are the main plant breeder and biotope disturbant. As a result of all the above, plants with higher demands on heat, light, alkalinity, nutrients and disturbances occur in the city. These are often alien species, which are much more in the city than in the surrounding landscape due to the more frequent occurrence of early successional stages. The proportion of alien species during succession decreases in favor of the native species. The total number of species (even within each group of species - native species, archeophytes and neophytes) is higher than in the surrounding landscape due to the high diversity of biotopes and the introduction (intentional and unintentional) of species by human activity. Keywords: urban vegetation, succession, diversity, anthropogenic factors, alien species
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