Figure 3.
Main effects of nutrient addition and precipitation addition treatments on community-weighted mean estimated genome size. Neither the soil type x nutrient addition nor the three-way interaction was significant, but the soil type x precipitation addition interaction was borderline (p = 0.084). Therefore, genome size results are presented both ways: once with plots pooled across soils (A) and once showing the interaction (B). Error bars show 1 SE below mean and 1 SE above mean. The y-axis is scaled to highlight variation among treatments, as it is not possible to have a 0 Mbp genome. Panel (B) suggests that main effect of precipitation addition on community-weighted mean estimated genome size was driven primarily by the lush serpentine soil.