Table 4 — Likelihood ratio tests for the generalized linear models with negative binomial distribution to explain the bat passes/hour for each species with more than 500 records. The models were constructed using the effect of period (months), elevations and tem- perature. Models were tested using step AIC (Akaike Information Cirterion) and variables temoved when the model was improved. Variables removed are marked with NI (not in- cluded). The significance of the effects are represented with * for p<0.05, ** for p<0.01 and *** for p<0.001. along an elevational gradient in a Neotropical rainforest, using exclus- ively acoustic methods.