L2b - Quercus robur – Quercus cerris woodlands:
50% of its area is endangered by plant invasion. Előfordulási területének 47%-án veszélyeztetik az özöngyomok. Black locust (Robinia pseudoacacia) is the most important invasive plant, but invasion by goldenrod species (Solidago spp.), American pokeweed (Phytolacca americana) and tree of haven (Ailanthus altissima) are also important threatening factors.
Botta-Dukát Z. (2008): Invasion of alien species to Hungarian (semi-)natural habitats Acta Botanica Hungarica 50(Suppl.): 219-227. >>> letöltés (139 KB, PDF)