Table 3. Candidate models used for inference on the richness of herbaceous and woody understory response to Dendroctonus ponderosae-induced tree mortality, light, soil moisture, and nutrients.
Richness of herbaceous perennials in 2012 | |||||
Candidate models | AICC | ΔAICC | w i | Evidence ratio | |
1 | Nutrients | 352.3 | 0.00 | 0.68 | 1.00 |
2 | Soil moisture | 355.9 | 3.63 | 0.11 | 6.18 |
3 | Tree mortality | 356.1 | 3.82 | 0.10 | 6.80 |
4 | Light | 356.6 | 4.29 | 0.08 | 8.50 |
5 | Soil moisture, nutrients, light | 358.3 | 5.99 | 0.03 | 22.6 |
Richness of herbaceous perennials in 2013 | |||||
Candidate models | AICC | ΔAICC | w i | Evidence ratio | |
1 | Tree mortality, soil moisture, nutrients | 424.7 | 0.00 | 1.00 | 1.00 |
Richness of woody perennials in 2012 | |||||
Candidate models | AICC | ΔAICC | w i | Evidence ratio | |
1 | Null model (intercept only) | 230.2 | 0.00 | 0.59 | 1.00 |
2 | Tree mortality, soil moisture | 232.0 | 1.71 | 0.25 | 2.36 |
3 | Light | 234.0 | 3.74 | 0.09 | 6.55 |
4 | Nutrients | 234.5 | 4.27 | 0.07 | 8.42 |
Richness of woody perennials in 2013 | |||||
Candidate models | AICC | ΔAICC | w i | Evidence ratio | |
1 | Tree mortality, soil moisture | 356.9 | 0.00 | 0.45 | 1.00 |
2 | Null model (intercept only) | 357.0 | 0.10 | 0.43 | 1.04 |
3 | Light | 360.7 | 3.85 | 0.07 | 6.42 |
4 | Soil moisture | 361.0 | 4.08 | 0.06 | 7.50 |
Notes: The most likely models (w i>0.90; difference in evidence ratio>2.7) are shown in bold. AICC = Akaike’s Information Criterion corrected, ΔAICC = difference between AICCi and AICC best model, w i = Akaike weight, and evidence ratio = w j best model / w i.