Fig. 3
From: Landscape controls on fuel moisture variability in fire-prone heathland and peatland landscapes
Density plots of fuel moisture distribution for Calluna vulgaris fuel layers across the 36 plots in the North Yorkshire Moors during hot, dry conditions April–July 2021 (number of samples for each fuel layer panel = ca. 180). Dashed vertical lines depict fuel moisture thresholds for sustained ignition within the different fuel layers based on previous research (Lukenbach et al 2015; Taylor et al 2021). One line = threshold; two lines = range of lower and upper threshold; no line = no conclusive threshold for this species