Table 2.

Multimodel average parameter estimates for SMD_mean (predator polyculture compared to the mean of the component predator species in monocultures) and SMD_max (predator polyculture compared to the most effective predator species in a monoculture)

Metric	Parameter	Estimate	Importance	95% CI lower bound	95% CI upper bound
SMDmean	Prey richness >1	0.007	0.062	−0.033	0.047
	Predator richness >2	0.011	0.120	−0.044	0.066
	Prey size	−0.011	0.133	−0.062	0.04
	Phylogenetic diversity	0.099	0.233	−0.284	0.482
	Size difference	−0.008	0.320	−0.035	0.019
	ratiosmall	−0.080	0.336	−0.344	0.184
	Functional diversity	0.448	1.000	0.065	0.831
SMDmax	Phylogenetic diversity	0.038	0.122	−0.147	0.223
	Prey size	−0.032	0.211	−0.149	0.085
	Size difference	−0.005	0.245	−0.026	0.016
	ratio small	−0.282	0.747	−0.754	0.190
	Predator richness >2	−0.276	1.000	−0.541	−0.011
	Functional diversity	0.461	1.000	0.049	0.873

Prey richness and predator richness estimate is the difference between the reference level (predator richness = 2 species; prey richness = 1). Parameters in bold indicate that the variable was included in the highest ranked model.