Community biomass and biodiversity effects in Phase I
Drought significantly decreased community biomass (Table 1, Fig. 3a).
There was a significant positive relationship between plant species
richness and community biomass in the ambient treatments, and no
correlation was detected in the drought treatments, reflecting a plant
species richness × soil moisture treatment interaction (Table 1, Fig.
3a). Driving the differences in the diversity-productivity relationships
between moisture treatments, BE and CE were lower in drought compared to
ambient treatments (Table 2, Fig. 4a and b). CE increased with plant
species richness, while SE values were more negative with plant species
richness (Table 2, Fig. 4b and c).