Comparison between south- and north-facing slopes of the environmental variables used in the performance analyses (except for microclimatic variables, see Table S2).

For each environmental variable, mean values are presented at south- and north-facing slopes respectively. The minimum and maximum values are noted within the parentheses. For productivity, the median values are shown instead of the means. N was 15 at south-facing slopes and 18 at north-facing slopes. The p-values were derived from comparisons between north- and south-facing slopes through Welch's t-tests.* Significance at the 5% level.Comparison between south- and north-facing slopes of the environmental variables used in the performance analyses (except for microclimatic variables, see Table S2).