Table 2.

Factors affecting the estimate of quantity consumed for each species

ModelAnimalNKAICΔAICAICW
√AreaElephant seals10 Quantity * 5 3695.2 3.7 0.14
Quantity + individual*153691.50.00.86
Sea lions13Quantity52893.3133.3>0.01
Quantity + individual 18 2760.0 0.0 0.99
√Area/ΔTElephant seals Quantity * 5 1174.2 0.0 0.99
Quantity + individual*151184.19.80.01
Sea lionsQuantity5827.441.9>0.01
Quantity + individual 18 785.4 0.0 0.99
  • The lowest AIC (Akaike's information criterion) value was used to determine the best fitting model (indicated in bold), except when models were not significantly different (*). Included for each model is the Akaike weight (AICW), which can be regarded as the probability that a model is the best, given the set of models. K is the number of model parameters.