Figure 3. Links between key soil functions and plant and microbial diversity. Correlation (spearman ρ) between five soil functions and microbial diversity across plant diversity treatments, measured at (i) pre -drought, (ii) drought, and (iii) after recovery. Soil functions were correlated against plant species richness and in individual soil dilution levels. Further, bacterial, and fungal richness, diversity and composition were correlated with soil functions in each plant richness level. Significant (p <0.05) correlations are indicated by *.