3.5 Effects of climatic and biotic factors on the intra-annual stability of community biomass
Consistent with simple regression results, SEM revealed that intra-annual species asynchrony, functional group PR biomass intra-annual stability and dominant species intra-annual biomass stability contributed to community intra-annual biomass stability (Fig. 7). Decreased accumulated amount of precipitation between June and September (P6-9) resulted in lower community intra-annual biomass stability by reducing species asynchrony. Consistent with the results of simple regressions (Table 1), precipitation in July (P7) increased species richness. Intra-annual biomass stability of functional group PF, which was negatively correlated with community stability in simple regression model, was removed from SEM.