Forest park of Botanical Garden of Pavol Jozef Šafárik University in the conditions of climate change

The paper deals with a complex of problems that affect changes in the woody composition of the forest park of the Botanical Garden of the Pavol Jozef Šafárik University in Košice. A special problem of greenery in the residential-industrial environment is the significant impact of various multispectral undesirable influences. Woody species are physiologically weakened by abiotic environmental factors, as a result of which suitable conditions are created for the activation of insect pests and the development of pathogens. In addition, unlike forest ecosystems, there is a very diverse dendrological structure, presented by a richly represented assortment of tree and shrub species. In recent years, non-native species of insects and diseases have often been introduced together with planting material. What were originally rare and isolated findings in parks, urban or other specialized plantings, have become a global problem in the course of a few years, not only aesthetic but also physiological with often fatal consequences even for old stands of introduced woody plants. Moreover, several species of introduced trees are changing their behavior and becoming invasive species with a potential threat to the species composition of original or artificially established plantings. In this paper, we map several negative tendencies in the development of species composition of woody plants over time.