Appendix A. A map showing current (1971–2000) distribution of Polygonum bistorta taken from Atlas Florae Europaeae (Lathi and Lampinen 1999) and downscaled projection of current distribution.
FIG. A1. Current (1971–2000) distribution of Polygonum bistorta taken from Atlas Florae Europaeae (AFE; Lathi and Lampinen 1999) (black circles) and downscaled projection of current distribution (green). Model accuracy was high (AUC = 0.94 for external evaluation at the AFE grid resolution [50 × 50 km2]; and AUC = 0.85 for external evaluation when projections were made for a 10’ grid. Here at least one 10’ grid cell that falls into an AFE grid cell had to be predicted to be suitable when the AFE grid cell is denoted as suitable while all 10’ grid cells had to be predicted as unsuitable otherwise).
Lathi, T., and R. Lampinen. 1999. From dot maps to bitmaps: Atlas Florae Europaeae goes digital. Acta Botanica Fennica 162:5–9.