Woody plants in street landscaping of urban-type settlement Alexeevka (Samara Oblast)

Our results support that introducents (72,1% of 68 found species) might have important impact on ecosystem of urban-type settlement Alexeevka, Kinel Urban Okrug of Samara Region. The local community of woody plants include 68 species from 48 genera, 21 families, 2 classes (Pinopsida, Magnoliopsida) and 2 divisions (Pinophyta, Magnoliophyta). 30 species (44,1%) of trees and 25 species (36,8%) of bushes are dominant plants. They are basically summer-green, cross-pollinated (entomophilous) species, mesotrophes, mesophytes, sciogeliophytes and mezotermes, which fruits and seeds are spread by animals. Introducents (Eurasian, European-American and European types of habitats) were planted at different times. Rosaceae (21 species, 30,9%) are well represented and the largest number of species contain genuses Populus (6 species), Rosa (4 species), Ulmus, Crataegus and Acer (3 species). We found seven rare species used in street landscaping: Juniperus communis L., J. sabina L., Crataegus volgensis Pojark., Tamarix ramosissima Ledeb., Cotoneaster melanocarpus Fisch. ex Blytt, Populus alba L. and Salix alba L. The change in variability of local communities has significant implications for our ability to predict how the patterns of biodiversity and ecosystem function will respond to environmental changes.