Abstract
This paper is a result of the field research of synanthropic vegetation in the territory of the city of Ostrava in the summer of 2010 (June - August) and in the spring of 2011 (April). A total of 213 reléves were carried out in three types of habitats (borders of fields, ruderal areas and railway tracks). The reléves were transferred to the ‘Turboveg’ database computer programme and analyzed using the Expert system of vegetation of the Czech Republic (the ‘Coctail’ method) in the ‘Juice’ computer programme. This paper contains the evaluation of the occurrence of plant species in particular habitats and of the types of their synanthropy with special regard to endangered and invasive species. A total of 201 species of vascular plants were found, among them 134 apophytes. A total of 4 endangered species and 8 invasive species were found. A total of 5 classes, 15 alliances and 25 associations were found using the analysis of vegetation in the ‘Juice’ computer programme. Only 5 associations occurred in all studied types of habitats. The most common association was Convolvulo arvensis-Elytrigietum repentis.