Figure 2.

Average relative growth rate (RGR; above- and below-ground) of tree assemblages differing in species composition and diversity in the moist (upper panel) and dry (lower panel) treatment (mean ± SE of 6–8 replicate pots). Different capital letters indicate significant differences (p < 0.05) between the species combinations in the full sample (moist: 16, dry: 11 combinations), different small letters indicate significant differences between the species combinations within a diversity level. Asterisks indicate significant differences between the moisture treatments for a species combination (°p < 0.10; ^*p < 0.05; ^**p < 0.01). For species abbreviations see Table 1.