Figure Legends
Fig. 1. Photograph of adult Desmognathus aeneus from
northern Georgia (courtesy Todd W. Pierson, KSU) and map of 90 sample
localities with SDM results of low, medium, and high habitat suitability
based on 10 BIOCLIM, ENVIREM, and ecoregion variables (see SI text).
Fig. 2. Linear morphometric analysis of size-corrected
phenotypic traits using LDA based on 89 individuals from 31 populations,
analysis of which do not generally separate the three geographic genetic
lineages. Axilla-Groin Length (AG) was the most substantial variable
distinguishing lineages but was not significantly different between
them.
Fig. 3. The best-fit three-population demographic model from
GADMA estimated using the ‘moments’ engine, showing topology, divergence
times, population sizes, and migration rates (a), and estimates of
individual ancestry coefficients from sNMF (b, d) along with a PCA of
the SNP matrix and the relationship between geographic and genetic
distance from the GDM (c).
Fig, 4. Analysis of IBD based on all individuals, between
lineages, and within lineages, showing linear (all) and LOESS (a)
relationship between geographic distance (km) and linearizedFst .
Figure 5. Results from RDA showing genotype-environment and
genotype-phenotype association by sites (a, b) and SNPs (c, d). The 18
SNPs shared in both are outlined in red.