Alien plants in the natural flora of Primorsky Territory

Andrey E. KOZHEVNIKOV, Zoya V. KOZHEVNIKOVA
Institute of Biology and Soil Science FEB RAS, Vladivostok, Russia

The complex of alien species in flora of the Russian Far East includes 743 species of vascular plants, 621 (83.6 %) of which are represented in flora of Primorsky Territory, i.e. 23.1 % of natural flora of this area. The total group of naturalized plants (NP) in Primorsky Territory includes 457species (73.6 %), among them agriophytes (transformes) – 24 species (3.9 %), epekophytes (invasive plants) – 206 (33.2 %) and kolonophytes (naturalized plants) – 227 (36.6 %). The group of ephemerophytes (casual alien plants) covers 164 species (26.4 %). Alien species of the Primorsky Territory can be divided into several groups by the character of geographical distribution. The most numerous group (I) with Eurasian- Mediterranean type of distribution includes 219 species, 83.7 % of which are naturalized. The group of American plants (II) consists of 104 species (NP 69.6 %), 59 species of which are North American ones. The group of Asian plants (III) covers 103 species (NP 55.9 %), in that number Pan Asian – 38 (NP 60.5 %), East Asian – 21 (NP 85.7 %), Central Asian – 13 (NP 50 %), West Asian – 11 (NP 45.5 %), South Asian – 7 (NP 14.3 %) and North Asian – 3 (NP 100 %). There are other less numerous groups: Eurasian group (IV) includes 72 species (NP 61.1 %), Mediterranean (V) – 46 (NP 52.3 %), Circumpolar (VI) – 24 (NP 87.5 %), European (VII) – 16 (NP 81.3 %), Tropical (VII) – 9 (44.4 %) and African (IX) – 6 (NP 0 %), as well as Australian – 1, North African–Middle Asian – 1, European– North American – 1 and Unidentified – 2. At the same time, 25 species, for which Primorsky Territory is the territory of secondary (anthropogenic) extension of the area, are represented here. In summary, we can include into the number of alien species component in flora of Primorsky Territory 646 species, that representing 24 % of natural flora of this territory.



© 2012 Organizing Committee