Table 2.
Percentage contribution of each variable to the species distribution model: (A) local model (2-m resolution), (B) regional model (30-m resolution); see text for variable definitions and variable selection
| Species distribution model | Percentage contribution |
Accuracy |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Annual temp. (°C × 10) | Annual precipitation (mm) | Elevation (m a.s.l.) | Roughness | Aspect (°) | Solar radiation (WH m–2) | TWI | Slope (°) | Curvature | Σ | AUCTrain* ± s.e. | AUCTest† ± s.e. | ||
| A | O. calthifolia | – | – | 85·2 | 0·7 | 0·6 | 3·1 | 3·8 | 2·1 | 4·4 | 100 | 0·991 ± 0·003 | 1·000 ± 0·000 |
| O. marchantii | – | – | 58·0 | 12·8 | 12·7 | 6·0 | 5·4 | 4·3 | 0·8 | 100 | 0·905 ± 0·027 | 0·914 ± 0·092 | |
| B | O. calthifolia | 86·3 | 13·2 | – | 0·1 | 0·2 | 0·1 | 0·1 | 0·0 | 0·0 | 100 | 0·946 ± 0·013 | 0·944 ± 0·042 |
| O. marchantii | 74·5 | 22·5 | – | 0·0 | 0·3 | 1·7 | 0·0 | 0·9 | 0·0 | 100 | 0·812 ± 0·049 | 0·857 ± 0·132 | |
*Computed using the training subset.
†Computed using the testing subset.