Relationships between snout-to-vent-length of males (squares and dashed line) and females (triangles and solid line) and A) mean temperature of the warmest quarter, B) mean temperature of the coldest quarter, C) elevation, D) course of the season and E) the phylogenetically independent component of the course of the season (ResSeason).

<p>Relationships between snout-to-vent-length of males (squares and dashed line) and females (triangles and solid line) and A) mean temperature of the warmest quarter, B) mean temperature of the coldest quarter, C) elevation, D) course of the season and E) the phylogenetically independent component of the course of the season (ResSeason).</p

Multiple regression analyses of the residuals of snout-to-vent-length on the eight ecological factors (PC).

<p>Residuals of snout-to-vent-length (denoted as <i>e</i> in the formulation of methods) express the portion of SVL that was not explained by the unshared variation between ecology and phylogeny. Bold lettering denotes partial correlations significant at <i>P</i><0.05. Asterisks denote the number of times that a PC was significant when applying the four selection criteria used to add spatial filters. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0104026#s2" target="_blank">methods</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0104026#pone-0104026-t002" target="_blank">Tables 2</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0104026#pone-0104026-t003" target="_blank">3</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0104026#pone.0104026.s004" target="_blank">Appendix S4</a> for details. <i>b</i>: denotes standardized regression coefficients.</p

Linear regression analyses of the residuals of snout-to-vent-length on each environmental predictor exhibiting factor loadings >0.7 in significant PCs (see Table 4).

<p>Residuals of snout-to-vent-length (denoted as <i>e</i> in the formulation of methods) express the portion of SVL that was not explained by the unshared variation between ecology and phylogeny. Bold lettering denotes <i>P</i>-values<0.05. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0104026#s2" target="_blank">methods</a> for details. <i>b</i>: denotes standardized regression coefficients.</p

Sampled localities for the Spanish Sand Racer species group corresponding to data-sets obtained from systematic field sampling of mt-DNA and SVL in 2006 (black squares: <i>Psammodromus occidentalis</i>, grey squares: <i>P. hispanicus</i>, white squares: <i>P. edwardsianus</i>) and a review of SVL data in the literature encompassing approximately 100 years (open circles).

<p>Higher intensity in the grey scale denotes higher elevation.</p

Multiple linear regression analyses of snout-to-vent-length on the ecological (PC) and phylogenetic (PV) factors, and on independent components, <i>i.e.</i> ecology independent of phylogenetic factors (ResPC) and phylogeny independent of ecological factors (ResPV).

<p>Bold lettering denotes partial correlations significant at <i>P</i> < 0.05. Only the first two phylogenetic factors are shown for brevity, the remaining factors were not significant (See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0104026#s2" target="_blank">methods</a> for details). <i>b</i>: denotes standardized regression coefficients.</p

Principal components analysis for environmental predictors in Peninsular Spain at a 1²-resolution.

<p>Bold lettering denotes factor loadings >0.7.</p

Variation partitioning into different contributions to the snout-to-vent-length of males and females.

<p>A) Independent and shared contributions of ecology and phylogeny and B) contributions of the phylogenetically independent component of relevant ecological predictors: mean temperature of the warmest quarter (ResMTWQ), mean temperature of the coldest quarter (ResMTCQ), elevation (ResElevation) and course of the season (ResSeason). Males are depicted in grey and females in black.</p

Linear regression analyses of snout-to-vent-length on each environmental predictor exhibiting factors loadings > 0.7 in significant PCs (see Table 2).

<p>Bold lettering denotes <i>P</i>-values<0.05. <i>b</i>: denotes standardized regression coefficients.</p

Relationships between the residuals of snout-to-vent-length and A) mean temperature of the warmest quarter, B) mean temperature of the coldest quarter, C) elevation and D) Enhanced Vegetation Index of Summer.

<p>Residuals of snout-to-vent-length (denoted as <i>e</i> in the formulation of methods) express the portion of SVL that was not explained by the unshared variation between ecology and phylogeny. Squares and dashed line: males, triangles and solid line: females.</p

Data_set

Data_se