Fig. 2.

Counts of adult R. sierrae at three relatively intensively surveyed sites (A–C) showing marked increases in abundance. These sites are fishless and currently contain some of the largest frog populations in Yosemite National Park. When multiple surveys were conducted in a single year, counts were averaged and are shown as mean ±1 SE. In A, the decrease in R. sierrae counts after 2006 may be in part because of the removal of ∼200 adults between 2006 and 2012 for use in translocations aimed at reestablishing R. sierrae populations in nearby habitats.