F4 - Dense and tall Puccinellia swards:
Its invasibility is very low, only 4% of its area is endangered by plant invasion.
Botta-Dukát Z. (2008): Invasion of alien species to Hungarian (semi-)natural habitats Acta Botanica Hungarica 50(Suppl.): 219-227. >>> letöltés (139 KB, PDF)