Posters Biodiv. Res. Conserv. Supplement 1, 2014 BRC www.brc.amu.edu.pl Expansion of adventive plant species in Velykodobron`skiy Reserve (Transcarpathia, Ukraine) Eva Andrik, Erzsébet Kohut & Andrea Keresztyén II. Rákóczi Ferenc Transcarpathian Hungarian Institute, 90202 Berehovo 6 Kossuth Square Ukraine, e-mail:
[email protected], kohute@ kmf.uz.ua,
[email protected] Velykodobron`skiy Reserve, of state value as a part In the investigated territory, the most aggressive spe- of Regional Landscape Park “Prytysyansky”, is located cies were: Helianthus tuberosus (projective cover about in the floodplain of the lower reaches of the Lato- 70 %), Fallopia japonica (up to 60%) and Heracleum ritsa River in the Transcarpathian Lowland. In this sosnovskyi (up to 50%), species that were distributed site, the vegetation is formed by floodplain forests in willow-poplar floodplain forests,Conyza canadensis and meadows, providing habitat for a number of rare (up to60%) and Erigeron annuus (up to 60%) in defores- plant species (Fritillaria meleagris, Leucojum vernum, ted areas, and Helianthus tuberosus (up to 50%) along L. aestivum etc.). Such rare environment types as the the banks of canals. No invasive species were found riparian natural willow-poplar and alluvial oak-elm-ash in the oak-hornbeam forests. Almost in all the habitat forests and alluvial meadows of river valley are pro- types, with the exception of only one, the presence tected here. In 2013, sites of Chomonyn forest tract situ- of Acer negundo, Conyza canadensis and Erigeron ated in close proximity to the village of Velykiy Dobron annuus was noted. were studied. The aim of the studies was to establish Acer negundo invasion to the most valuable habitats the participation of invasive and potentially invasive such as flood meadows leads to a significant transfor- alien plant species in communities of different habitat mation of this vegetation; the species is noted in all types in the Reserve.