Fig. 1.

Increase in abundance of adult R. sierrae across all surveyed water bodies in Yosemite National Park from 1993 to 2012. Values in each year are the estimated numbers of frogs observed per water body during a survey (averaged across all surveys conducted per year), with a bootstrapped 95% CI. Estimates are for all 2,154 water bodies in Yosemite that were surveyed at least twice during the study period, including those that were not visited in a given year and/or where adult R. sierrae were never observed in any surveys. The relatively low predicted counts are in part because of the existence of many surveyed water bodies that are only marginally suitable and consequently, in which R. sierrae were never detected during the study. Fig. S1 shows the actual distribution of frog counts for water bodies visited in each year and the predicted counts for all water bodies.