Table 3. Summary of resultant values from ecological niche modeling (AUC and variable contribution), Mantel's tests (Mantel's r value, P-value) and AICc.
| Candidate model | AUC | Variable contribution (%) | Mantel's r | P-value | AICc | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| |
|
Elevation |
Slope |
TWI |
Watershed |
Soil |
Vegetation |
|
|
|
| O. ishikawae | ||||||||||
| Elevation+soil+slope+TWI | 0.923 | 28.1 | 13.6 | 16.4 | – | 41.9 | – | 0.611 | 0.073 | −40.209 |
| Elevation+soil+slope | 0.884 | 32.2 | 19.8 | – | – | 47 | – | 0.611 | 0.054 | −42.630 |
| Elevation | 0.770 | 100.0 | – | – | – | – | – | 0.610 | 0.075 | −47.187 |
| Elevation+slope | 0.826 | 69.5 | 30.5 | – | – | – | – | 0.610 | 0.043 | −44.945 |
| Elevation+soil | 0.853 | 44.4 | – | – | – | 55.6 | – | 0.609 | 0.058 | −44.937 |
| Elevation+soil+TWI | 0.902 | 38.7 | – | 13.1 | – | 48.2 | – | 0.608 | 0.066 | −42.596 |
| Elevation+soil+vegetation | 0.917 | 17.4 | – | – | – | 29.8 | 52.8 | 0.608 | 0.067 | −42.594 |
| Elevation+soil+slope+watershed | 0.933 | 26.7 | 15.8 | – | 23.1 | 34.4 | – | 0.608 | 0.068 | −40.063 |
| Elevation+vegetation | 0.889 | 29.0 | – | – | – | – | 71.0 | 0.607 | 0.046 | −44.913 |
| Elevation+soil+slope+TWI+watershed | 0.940 | 27.1 | 9.9 | 5.1 | – | 33.5 | – | 0.607 | 0.063 | −37.632 |
| Full model | 0.951 | 17.1 | 5.6 | 2.7 | 12.2 | 23.5 | 38.9 | 0.604 | 0.053 | – |
| Euclidian | – | – | – | – | – | – | – | 0.597 | 0.064 | – |
| O. splendida | ||||||||||
| Elevation+soil+vegetation | 0.900 | 75.4 | – | – | – | 18.2 | 6.5 | 0.699 | 0.001 | −135.740 |
| Elevation+soil | 0.891 | 80.9 | – | – | – | 19.1 | – | 0.699 | 0.001 | −138.033 |
| Elevation+soil+slope | 0.900 | 80.5 | 1.3 | – | – | 18.2 | – | 0.698 | 0.001 | −135.687 |
| Elevation+soil+slope+TWI | 0.898 | 79.9 | 0.8 | 0.2 | – | 19.1 | – | 0.698 | 0.001 | −133.218 |
| Elevation+soil+slope+vegetation | 0.905 | 76.4 | 1.0 | – | – | 15.9 | 6.7 | 0.697 | 0.001 | −133.148 |
| Elevation+soil+TWI | 0.893 | 80.6 | – | 0.4 | – | 19.0 | – | 0.697 | 0.001 | −135.635 |
| Elevation+soil+slope+TWI+vegetation | 0.901 | 74.6 | 1.6 | 0.2 | – | 16.2 | 7.4 | 0.696 | 0.001 | −130.598 |
| Elevation+soil+TWI+vegetation | 0.900 | 75.6 | – | 0.4 | – | 16.9 | 7.1 | 0.695 | 0.001 | −133.051 |
| Elevation+soil+slope+watershed | 0.896 | 77.2 | 0.7 | – | – | 20.7 | 1.3 | 0.676 | 0.001 | −131.857 |
| Elevation+soil+slope+vegetation+watershed | 0.902 | 74.4 | 0.8 | – | 1.4 | 16.3 | 7.1 | 0.674 | 0.001 | −131.731 |
| Full model | 0.903 | 73.3 | 1.2 | 0.2 | 2.3 | 15.8 | 7.2 | 0.669 | 0.001 | – |
| Euclidian | – | – | – | – | – | – | – | 0.657 | 0.001 | – |
Abbreviations: AUC, area under the curve; TWI, terrain wetness index.
Values in bold type indicate statistical significance (P<0.05) and the lowest AICc values within the models are statistically significant in Mantel's test.