title: Invasive species in the flora of Ukraine. I. The group of highly active species
abstract: The group of highly active invasive species (64), including also transformer species, in the flora of Ukraine are determined and analysed according to the following criteria: geography (degree of occurrence in different botanical and geographical regions, migratory activity), degree of naturalization, and coenotic activity. Highly active invasive species have a wide distribution range in Ukraine and, respectively, the uniqueness of species composition in different botanical and geographical regi
journal: Geo&Bio