Fig. 7
From: Fire and land cover change in the Palouse Prairie–forest ecotone, Washington and Idaho, USA
Fire frequency at the forested eastern edge of the Palouse Prairie in Idaho, USA. The sites (Table 1) are arranged from north at the top to south at the bottom. Composite fire intervals were computed over 9 ± 5 ha per site, during the analysis period from 1650 to 1900. Site codes on the vertical axis are followed by the number of fire intervals reconstructed during the analysis period. The boxes enclose the 25th to 75th percentiles and the whiskers enclose the 10th to 90th percentiles of the distribution of intervals. The vertical line across each box indicates the median fire interval, and all values falling outside the 10th to 90th percentiles are shown as circles