Alien plant species in the north of Western Siberia

Lead Author Alexandr, Egorov
Institution Contact St. Petersburg State University, Universitetskaya nab., 7-9, St. Petersburg, 199034, Russia
Co-Authors Vyachaslav Byalt, Komarov Botanical Institute of Russian Academy of Sciences, Russia. Elena Pismarkina, Botanical Garden of the Ural Branch of the Russian Academy of Sciences, Russia
Theme Theme 1: Vulnerability of Arctic Environments
Session Name 1.7 Invasive species in Arctic ecosystems in the changing world: Is it a real threat?
Presentation Type Poster
Abstract text The North of the Western Siberia is still poorly floristically investigated. At the same time, there are a lot of activities of mining industries, the active road building, pipeline construction, development of infrastructures, growth of settlements, the development of agriculture, horticulture, gardening, etc. It is created the preconditions for the invasion and dispersal of alien species on disturbed areas: roadsides and slopes of roads, river shallows, badlands, in airports and train stations.
The abstract presents the data on the alien plant species collected during the field observations made in 2012-2014 in the settlements of the Yamalo-Nenets Autonomous District, which are located in southern tundra (1 settlement); forest tundra subzone (5); northern (3) and middle taiga (1).
"Adventive plant" status has been given in the following cases:
1) an indication in the literature as a skid type for the region;
2) an occurrence of species only or mainly in ruderal and / or weedy habitats;
3) an occurrence of the species in isolation from its main natural areal.
143 adventive species belonging to 31 families from Magnoliophyta were identified. Herbarium specimens are stored in the herbarium LE, KFTA, SVER. More than half of the species (59%) are represented by 6 families (Asteraceae - 24, Poaceae - 16, Fabaceae - 12, Apiaceae 11 and Brassicaceae, Rosaceae – on 10).
100 new species and 11 genera of adventive plants for the territory of the District have been identified, including 18 new species for the flora of Siberia: Aethusa cynapium, Anthyllis vulneraria, Chaerophyllum aureum, Dianthus barbatus, Epilobium bergianum, Geum urbanum, Medicago romanica, Potentilla obscura, Rubus strigosus etc.
However, the synanthropic plants are settled exclusively in anthropogenic habitats, practically not invasing into the taiga, tundra and another undisturbed ecotopes.
This work was supported by the Department of Science and Innovation of the Yamalo-Nenets Autonomous District (N01-15/4_25.07.2012).