Fig. 2From: Post-glacial phylogeography and evolution of a wide-ranging highly-exploited keystone forest tree, eastern white pine (Pinus strobus) in North America: single refugium, multiple routesSummary bar plot of estimated membership coefficient (Q) of the studied individuals from 33 eastern white pine populations from STRUCTURE analysis for (K =) 30 clusters. Each individual is represented by a single vertical line while each colour represents one of the 30 clusters. The full names of the populations are provided in Table 1 Back to article page