J2 - Alder swamp woodlands:
46% of its area is endangered by plant invasion, first of all goldenrod (Solidago spp.) species and boxelder (Acer negundo).
Botta-Dukát Z. (2008): Invasion of alien species to Hungarian (semi-)natural habitats Acta Botanica Hungarica 50(Suppl.): 219-227. >>> letöltés (139 KB, PDF)