Fig. 5: Posterior distributions of the estimated effects of forest disturbances on the relative density of live tree populations for the eight most abundant species in the western US over the period 2001–2018.
From: Over half of western United States' most abundant tree species in decline
Change in relative tree density resulting from each disturbance type is estimated as the product of average disturbance severity and probability (annual), where disturbance severity is defined as the average difference in relative density shifts between undisturbed and disturbed sites. Posterior probability distributions of parameters are estimated via Markov chain Monte Carlo (5000 samples). Posterior medians of each parameter are plotted as black vertical lines. Asterisks indicate the 95% credible interval of the mean effect excludes zero, and hence are considered statistically significant. Source data are provided as a Source Data file.
