Fig. 3

Soil chemical characteristics, microbial biomass, total enzyme, and phosphatase activity measured in bulk soils. Values shown are the average of five soil samples from each plant community sampling site, each sample a pool of three to ten individual soils (see Supplementary Table 2 for standard error of the mean and statistical analyses). Color shading represents concentration, biomass, or enzyme activity, and is based on standardized z-scores. Values above the respective means are colored red, values below the mean are colored blue