Appendix A. Tables reporting the deep-root proportion of monocultures and results of statistical models of root biomass, deep-root proportions, and differences between observed and expected deep-root proportions; and figures showing root biomass for each depth increment and species richness, and correlations of the deep-root proportion and the difference between observed and expected deep-root proportion with the abundance of legumes and C4 grasses in diverse plots.

Tables reporting the deep-root proportion of monocultures and results of statistical models of root biomass, deep-root proportions, and differences between observed and expected deep-root proportions; and figures showing root biomass for each depth increment and species richness, and correlations of the deep-root proportion and the difference between observed and expected deep-root proportion with the abundance of legumes and C4 grasses in diverse plots.