TABLE 2. Statistical results for beta diversity (total, turnover, and nestedness) in relation to continuous fire severity (dNBR) and the topographic variables elevation, topographic relative moisture index (TRMI), and terrain ruggedness index (TRI). (A) Final models from adonis tests (Vegan R package) with Sorensen dissimilarity calculated pairwise among all plots (n=138) separately for prefire and postfire timesteps. (B) Final models from multiple regression for matched plots (prefire-postfire dissimilarity for each of 138 plots); since timestep is embedded into these values, analyses do not separate pre-fire and post-fire. Table provides F values for (A) and t-values for (B), with statistical significance (*P <0.05, **P <0.01, ***P <0.001). Polynomial models were tested for topographic variables and retained when significant (P <0.05).