Table 2.
Top models (Akaike's Information Criterion values [AICc], Akaike weights [wi], and P-values) of variation in lipid content for adult polar bears in the southern Beaufort Sea subpopulation, 2004–2011, where melt is duration of summer melt season, IFD is ice-free days, age is bear age, Odate is ordinal sampling date, and cub is number of dependent cubs.
| Model | ΔAICc | wi (model) | P (model) |
|---|---|---|---|
| Adult females | |||
| Melt | 0.00 | 0.15 | 0.010 |
| Melt, IFD | 1.17 | 0.08 | 0.021 |
| Odate, Melt | 1.73 | 0.06 | 0.036 |
| Melt, Cub | 1.86 | 0.06 | 0.040 |
| Age, Melt | 1.89 | 0.06 | 0.131 |
| Adult males | |||
| IFD, Melt, Odate | 0.00 | 0.29 | <0.0001 |
| Odate, IFD | 0.69 | 0.20 | <0.0001 |
| Age, Odate, IFD | 1.09 | 0.17 | 0.0002 |
| Age, Odate, Melt, IFD | 1.91 | 0.11 | 0.0003 |