Table 1.

Proportion of explained variation obtained through variation partitioning analysis based on partial regressions on top-down control given by each predictor and their shared effects. Predictors are as follows: PD, phylogenetic diversity; FD, functional trait (body size) diversity and CAS, community average body size. Three asterisks represent p < 0.001. Note that it is not possible to calculate p-values for intersections, i.e. shared effects.

components	adj.R2
pure effect of PD	0.000
pure effect of FD (body size)	0.043
pure effect of CAS	0.262***
shared effects between PD and FD	0.003
shared effects between FD and CAS	0.330
shared effects between PD and CAS	0.000
shared effects between PD, FD and CAS	0.000
total explained variance	0.638***