Amphibian species richness and abundance in ten study sites in central Veracruz, Mexico.

a) Observed (dark red) and estimated species richness (light red). The error bars indicate the upper and the lower Confidence Intervals at 84%. Comparisons of estimated species richness and Confidence Intervals were made with the same sampling effort (number of individuals), extrapolating estimates and using site 7 as a reference value because it had the highest abundance recorded. b) Cumulative abundance for each study site.