Kovtonyuk A. Spontaneous flora and vegetation of the garden and park landscapes of the Middle Pobuzhzhia region (structure, differentiation, transformation, conservation)

The dissertation is deals with a comprehensive study of the spontaneous flora and vegetation of garden and park landscapes of the Middle Pobuzhzhia region (GPLMP), analysis of their structure, a degree of anthropogenic transformation, ecological and habitat differentiation, as well as conservation. A list of the spontaneous flora of the GPLMP was compiled, which includes 691 species, 377 genera, 103 families, an analysis of its systematic, biomorphological, ecological structure was carried out, the degree of its anthropogenic transformation was determined; a list of ergasiophyte species was compiled, which includes 52 species, among which colonophytes predominate (21 species). A new alien species for the flora of Ukraine, Cephalaria gigantea (Ledeb.) Bobrov, was revealed. It was determined that spontaneous vegetation of the GPLMP is represented by communities of 13 classes, 15 orders, 18 alliances, 27 associations and four derivative communities, the degree of species richness and diversity of the syntaxa of woody and grassland vegetation was established; the changes in the ecological characteristics of vegetation units as a result of their anthropogenic transformation in the conditions of garden and park landscapes was revealed based on phytoindicative assessment. A habitat classification of the SPLSP allows identifying 41 habitat types, including 28 types of natural and 13 anthropogenic habitats. The phytoindication maps for 12 environmental factors have been developed for the NDP "Sofievka" NAS of Ukraine. The role of the GPLMP for the biodiversity conservation was confirmed as far as they include nine species listed in the Red Book of Ukraine (2009), two syntaxa listed in the Green Book of Ukraine (2009) and 20 habitat types from the Resolution 4 of the Berne Convention. A strategy for the optimization of the GPLMP and practical recommendations for their management in modern conditions have been proposed.