Figure 2

Comparison of genetic diversity estimators (mean ± s.e) between treatments (filled dots: conventional 2-lane roads R, 4-lane highways H, and combined barriers CB) and their controls (empty dots). Ho: observed heterozygosity, uHe: unbiased expected heterozygosity, A: allelic richness. Means are computed as a global mean per plot (a) and as an absolute difference between barrier sides (b).