Table 2 Model selection for GLMMs of two-year tree mortality probabilities for common conifers, including terms for tree size (logDBH, log-transformed stem diameter), species identity (Spp), and history of prescribed fire (BurnStatus, unburned or past prescribed fire) using AICc. Evidence for substantial model dissimilarity was ΔAICc > 2.
Model class | Model predictors | df | log likelihood | AICc | ΔAICc |
|---|---|---|---|---|---|
Base model | logDBH + Spp | 6 | −1381 | 2773 | 14.6 |
logDBH × Spp | 9 | −1375 | 2769 | 10.0 | |
BurnStatus | logDBH × Spp + BurnStatus | 10 | −1371 | 2762 | 3.3 |
logDBH × Spp + BurnStatus × logDBH | 11 | −1371 | 2764 | 5.1 | |
logDBH × Spp + BurnStatus × Spp | 13 | −1366 | 2759 | 0.0 | |
logDBH × Spp × BurnStatus | 17 | −1366 | 2766 | 7.3 |