Fig. 1: Map showing the 10 European native regions.
From: Many plants naturalized as aliens abroad have also become more common within their native regions
For these regions, we have information on occupancies of native plant species for an early and a later time period. Polygons were obtained from GADM, the GloNAF database, or were created using Google Earth Pro (Data SIO, NOAA, U.S. Navy, NGA, GEBCO; Image Landsat / Copernicus).
