Effects of plant diversity and heterotroph removal on plant biomass
As plant diversity increased from 1 to 16 species, total plant biomass increased from an average of 730 g.m-2 to 1120 g.m-2 in plots where heterotrophs were present (Fig. S1, Table S1). Experimental removal of foliar fungi increased plant biomass in the mid and high diversity plots (Table S1, Fig. S1).