Fig. 2
Variation in (a) fireline intensity, (b) flame length, and (c) flame height in relation to fuel load class for 27 experimental managed burns on Calluna-dominated moorland in Scotland between spring 2006 and autumn 2009. Fuel load classes are phases of the Calluna cycle described by Gimingham (1988): early building phase (E-Building), late-building phase (L-Building) and Mature phase (Mature). The line in the boxplot is the median, the height of the box is defined by the 25th and 75th percentile, and the whiskers represent ±2.7 times the standard deviation (99.3% of the data). Letters above the boxes show the results of post-hoc pairwise comparisons when boxes with the same letter do not have significantly different means. There was no significant difference by fuel class for flame length