highly significantP <0.0001
In addition, after stem abundance was accounted for, maximum D was a highly significant predictor of species contributions to biomass (F=6,218, df=1,317, P <0.0001, R 2 =0.83, Fig. 4a ) and productivity (F=2,577, df=1,254, P <0.0001, R 2 =0.67, Fig. 4b ).