Fig. 3

Percent cover of common species at sites measured in 2005 (dark grey) and 2016 (white) across the Taylor Complex fires (2004), Alaska, USA. Note that unburned sites were not measured in 2005. Species shown are (A to F): Chamerion angustifolium, Hylocomium splendens, Ledum groenlandicum, Salix spp., Vaccinium uliginosum, and Vaccinium vitis-idaea. Boxplots show median, hinges (25th and 75th percentiles), and whiskers that extend to values no more than 1.5*IQR (inter-quartile range) from upper or lower hinge, respectively. Points outside this range are considered outliers and plotted separately. All Kruskal-Wallis tests were significant among unburned, all burned sites in 2005, and all burned sites in 2016 (df = 2, χ² ≥ 5.29, P ≤ 0.07); Dunn’s pairwise test for differences are shown with letters to indicate significant pairwise differences (α < 0.1)