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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: Large scale patterns of genetic variation and differentiation in sugar maple from tropical Central America to temperate North America

Fig. 1

Map of collection sites and haplotype network in sugar maples. a Distribution of chloroplast haplotypes observed. Pie charts indicate the frequency of haplotypes within each population. Each circle corresponds to a locality. Haplotypes found are indicated by different colors. Barrier boundaries using nuclear data are red lines; boundaries based on chloroplast data are green lines. Boundaries, calculated in Barrier v.2.2 using the Dest differentiation estimator for nuclear microsatellites (bootstrap support is 58 % for Midwest, 45 % for West Mexico, 41 % for South Mexico) and the Tamura-Nei population distance measure D A for chloroplast haplotypes (bootstrap support is 55 % for Midwest, 50 % for South Mexico, 50 % for West Mexico, 46 % for Northeast). Black, continuous line indicates natural distribution of A. saccharum in North America. All know populations in Mexico and Guatemala of A. saccharum subsp. skutchii are represented in the map. b Network of 34 chloroplast DNA haplotypes observed. The identification letter of each haplotype is presented. The size of the circle and the number indicate the observed frequency. The colors correspond to the alleles depicted in the map a)

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