Table 2.

Models fitted to empirical data on carnivore densities.

fitted modela	estimated parameters	AIC	ΔAIC	w	r2
lm(logN ∼ logM)	3	−168.22	168.79	0	0.25
lm(logN ∼ logP)	3	−156.90	180.10	0	0.20
lm(logN ∼ logM + logP)	4	−325.76	11.24	0	0.66
lm(logN ∼ logM × logP)	5	−337.00	0.00	1.00	0.68

^aModel specifications are compatible with R [16] and represent single predictor linear models in the first two cases, a two predictor linear model in the third case and a model containing both predictors and their interaction in the final case.