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The structure of dispersed vegetation around the village Ostretin
Hloušková, Jana ; Janeček, Vladimír (advisor) ; Vítámvás, Jan (referee)
Scaterred vegetation is a significant element in a landscape which has many functions. The main functions are ecological, soil-protective, microclimatic, productive, medical, and hygienic. This thesis is focused on species composition in scaterred vegetation. The aims of this thesis were to find out the species composition and also the habitat characteristics during the past dendrologic research. Also, it was important to determine which factors affect the species composition. A study was held in September and October 2015 around a village Ostřetín in region of Pardubice. 19 tree species and 9 bush species altogether were found in 70 locations. To the largest group of bush species belong Sambucus nigra, Rosa sp., Crateagus sp. and Prunus spinosa. As for the trees species, the most numerous groups were Alnus glutinosa, Prunus domestica, Pinus sylvestris and Picea abies. All the collected data were statistically evaluated using generalized linear model. Neither water nor altitude influence were conclusive. On the other hand, factors as area, canopy, vertical stratification and presence of dead wood were significant meaning they affected the species composition. Comparison of similar studies shown that the species as Rosa sp. and Sambucus nigra are significantly dominant bush species in scaterred vegetation. On the contrary, frequency of tree species is different in many cases.
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