Table 1 Number (and percent) of plots in northern Arizona mixed-conifer and ponderosa pine forest that experienced moderate-to high-severity fire by 5-year interval between snag sampling occasions. n = 53 and 60 plots sampled in mixed-conifer and ponderosa pine forest, respectively. Plots were classified as having experienced moderate- to high-severity fire if a visual inspection indicated that considerable tree mortality had occurred within the plot due to fire between sampling occasions