Table 2.
Comparison of models to explain variation among species and over time in roost size using Akaike’s Information Criterion (AIC), ΔAIC, Akaike weights ( ω I )
| Model | AIC | ΔAIC | ω i | K |
|---|---|---|---|---|
| Species*Jdate + Species*Jdate0.5 | 16694 | 0 | 1 | 12 |
| Species + Jdate | 16965 | 271 | 0 | 9 |
| Jdate + Jdate0.5 | 17135 | 441 | 0 | 3 |
| Species*Jdate | 22144 | 5450 | 0 | 10 |
| Species + Jdate + Jdate0.5 | 22266 | 5572 | 0 | 10 |
| Jdate | 22418 | 5724 | 0 | 2 |
| Species | 41269 | 24575 | 0 | 8 |
| Intercept | 41373 | 24679 | 0 | 1 |
*denotes an interaction between two model parameters.
Parameters in the model include linear and nonlinear time components (Jdate is the Julian date or day of the year, with January 1 = 1). K is the number of parameters in the model.