Appendix G (TABLE G1). Model selection summary for alien richness at the site scale (metacommunity). Predictor variables: vegetation (VEG), altitude (ALT), ALT2, density indigenous species (DIS), DIS2, DIS × VEG, indigenous species richness (ISR), ISR2; sign in brackets indicates direction of covariation; shaded models do not satisfy underlying assumptions.
Model | Variables | nVArs | R2 | AICc | Δ AICc | AICc wi |
#1 (GWR) | (-)ALT2 | 7.2 | 0.52 | 128.58 | 0.00 | 0.186 |
#2 (GWR) | (+)DIS | 2.84 | 0.40 | 128.91 | 0.33 | 0.158 |
#2b (OLS) | (+)DIS | 1 | 0.28 | 129.68 | 1.10 | 0.107 |
#3 (OLS) | (+)DIS2 | 1 | 0.27 | 129.85 | 1.27 | 0.098 |
#3b (GWR) | (+)DIS2 | 3.20 | 0.33 | 129.87 | 1.29 | 0.097 |
#4 (GWR) | DIS, (+)ISR2 | 4.03 | 0.35 | 130.38 | 1.80 | 0.075 |
#5 (GWR) | (+)DIS, (+)ISR | 4.38 | 0.36 | 130.50 | 1.92 | 0.071 |
#4b (OLS) | (+)DIS, (+)ISR2 | 2 | 0.30 | 130.54 | 1.96 | 0.070 |
#6 (GWR) | (+)DIS2, (+)ISR2 | 3.66 | 0.33 | 130.55 | 1.97 | 0.069 |
#6b (OLS) | (+)DIS2, (+)ISR2 | 2 | 0.30 | 130.58 | 2.01 | 0.068 |