Figure 2
From: Short-interval wildfire and drought overwhelm boreal forest resilience
Differences between long and short fire-free interval (FFI) sites. Grey lines connect paired sites with the same elapsed time since last fire. Significance (p ≤ 0.05) of differences between long (“Long”; blue) and short (“Short”; yellow) pairs is indicated with an asterisk in the panel header (details of tests in Tables S3, S4, S7). Post-fire variables are: (a) the logarithm of conifer seedling density in the post-fire cohort, (b) the logarithm of broadleaf seedling and propagule density in the post-fire cohort, (c) the logarithm of total stem density of seedlings and propagules in the post-fire cohort, (d) the proportion of conifer stems in the post-fire cohort, (e) the mean percent cover of exposed mineral soil and rock in understory vegetation abundance plots, and (f) the mean depth of the residual organic soil layer.
