Comparison of models used to test the effect of host species, climate and disturbance on fly abundance in four species of bats in the Smithsonian Venezuela Project data set.

Models are ranked from the most supported (best model) to the least supported according to Akaike information criteria (AIC). Δ AIC – difference in AIC between the current and best model; wi – model probabilities. K – number of parameters in the model. Note that the number of parameters includes k, which is the dispersion parameter of the negative binomial distribution (see Protocol S1 for details). Host – host species; PC1 and PC2 – principal components of the seven environmental variables; HPE – Human population density estimate (see Methods for details).
aGlobal model; b host-species model; c Null model.