Abundance of the three most frequently observed post-metamorphic native anurans (Boana pulchella, Leptodactylus luctator, and Pseudis minuta) in relation to bullfrog abundance in San Carlos, Maldonado Department, Uruguay. Black points are observations for each sampled pond, n.s. is not statistically significant, and the red line in the rightmost graph is the negative binomial GLM model (ResDev: Residual Deviance, P: P-value). The grey shade is the adjustment of the model for its standard deviation.