Native (a) and alien (b) plant species richness (alpha diversity) for each region (PolaPlai – Polish Plain, HighWeCa – High Western Carpathians, MatrWeCa – Matricum of Western Carpathians, Pannonian – Pannonian lowland). Different letters indicate statistically significant differences at P < 0.05.

 
  Part of: Hrivnák R, Jarčuška B, Jarolímek I, Kochjarová J, Májeková J, Hegedüšová Vantarová K, Slezák M (2022) Comparative diversity of vascular plants in black alder floodplain and swamp forests of Central European biogeographical regions. Biodiversity Data Journal 10: e90281. https://doi.org/10.3897/BDJ.10.e90281