L2x - Foothill mixed oak woodlands:
50% of its area is endangered by plant invasion. There is considerable spatial variation of alien species cover, but there is no recognizable geographical pattern. Black locust (Robinia pseudoacacia) is the most important invasive plant, but invasion by tree of haven (Ailanthus altissima) is also important threatening factor.
Botta-Dukát Z. (2008): Invasion of alien species to Hungarian (semi-)natural habitats Acta Botanica Hungarica 50(Suppl.): 219-227. >>> letöltés (139 KB, PDF)