Fig. 2

Predictive abilities of the ensemble models for three predictor sets (a, b), and of six modelling algorithms for seven species of Quercus section Heterobalanus (c, d). Predictive ability is expressed as the area under the curve of the receiver-operating curve (AUC) and the true skill statistic (TSS). The same letters or “ns” indicate no significant differences between models by Wilcoxon sign rank test comparisons. Dashed lines in red represent a cutoff threshold for AUC (0.7) used for selecting the algorithms and represent a good performance for TSS (0.5), while in black represent the average AUC and TSS value of all models