Fig. 3
Principle coordinates analysis (PCoA) based on the pairwise FST matrix. Lines connect each population of Impatiens glandulifera from the 2011 (grey circle) and 2016 (black circle) sampling year. Population codes at connection lines: A = Amiens, G = Ghent, B=Bremen, L = Lund, S=Stockholm, T = Trondheim. Population circle sizes corresponds to population size groups (ordinal levels) given in Table 1. The first three PCoA axes explained 35.29, 17.16 and 13.81% of the total variation, respectively