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Figure 7 | BMC Evolutionary Biology

Figure 7

From: Pleistocene glacial refugia across the Appalachian Mountains and coastal plain in the millipede genus Narceus: Evidence from population genetic, phylogeographic, and paleoclimatic data

Figure 7

Mirrored character state optimizations of coastal plain and paleo-presence threshold matrices onto the mtDNA haplotype phylogeny using a parsimony character reconstruction method. (a) Optimization of the coastal plain (light blue branches) and "montane" (black branches) characters states. (b) Red branches indicate habitat suitability above the lowest point threshold (P = 0.2) derived from the niche-based paleodistribution model (values extracted from analysis illustrated in Figure 6b); black branches show optimization of character state that represents values where P < 0.2 (i.e., Narceus not expected to have occurred in these areas during the Pleistocene glaciation.

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