Appendix Fig. A.2. Principal component analysis (PCA) of 19 bioclimatic variables: Temperature related variables coloured (cornflowerblue): Annual Mean Temperature (BIO1), Mean Diurnal Range (Mean of monthly (max temp - min temp)) (BIO2), Isothermality (BIO2/BIO7) (* 100) (BIO3), Temperature Seasonality (standard deviation *100) (BIO4), Max Temperature of Warmest Month (BIO5), Min Temperature of Coldest Month (BIO6), Mean Temperature of Wettest Quarter (BIO8), Mean Temperature of Driest Quarter (BIO9), Mean Temperature of Warmest Quarter (BIO10), Mean Temperature of Coldest Quarter (BIO11), precipitation related coloured (burlywood4): Annual Precipitation (BIO12), Precipitation of Wettest Month (BIO13), Precipitation of Driest Month (BIO14), Precipitation Seasonality (Coefficient of Variation) (BIO15), Precipitation of Wettest Quarter (BIO16), Precipitation of Driest Quarter (BIO17), Precipitation of Warmest Quarter (BIO18), Precipitation of Coldest Quarter (BIO19) and 3 other environmental variables, Altitude, Aridity (Wetness Index (WI)) and Potential Evapotranspiration (PET) coloured (darkseagreen4) at Ugandan C. canephora wild sites. The two first axis, PC1 and PC2, account for 64.7 % and 21.3 % of the total variation, respectively.