Table 1.
Generalized linear mixed effect models for habitat selection for little auk (n = 94), with parameter estimates (β) and their 95% confidence interval (CI) for each winter month. Calanus finmarchicus density (Cfin, log10 density m−2) and energy requirements (ER) were centred. 95% CI exclude 0 at α <0.05 (*), <0.01 (**), <0.001 (***).
| November β 95% CI | December β 95% CI | January β 95% CI | February β 95% CI | |
|---|---|---|---|---|
| intercept | 0.073 ± 0.088 | 0.31 ± 0.077*** | 0.32 ± 0.11** | 0.36 ± 0.11** |
| Cfin | 0.19 ± 0.031*** | 0.20 ± 0.030*** | 0.081 ± 0.029** | 0.10 ± 0.046* |
| Cfin2 | −5.8 × 10−3 ± 1.8 × 10−3** | −7.7 × 10−3 ± 2.1 × 10−3*** | −5.3 × 10−3 ± 1.4 × 10−3*** | −5.7 × 10−3 ± 2.3 × 10−3* |
| ER | 0.017 ± 7.5 × 10−3* | −4.3 × 10−3 ± 6.1 × 10−3 | 3.0 × 10−3 ± 4.2 × 10−3 | 0.016 ± 3.9 × 10−3*** |
| Er2 | −2.0 × 10−3 ± 8.7 × 10−5* | −4.0 × 10−5 ± 4.1 × 10−5 | −7.0 × 10−5 ± 4.3×10−5 | −9.0 × 10−5 ± 3.3 × 10−5** |
| Cfin * ER | −2.0 × 10−4 ± 1.4 × 10−3 | −1.8 × 10−3 ± 6.4 × 10−4** | −1.1 × 10−4 ± 2.6 × 10−4 | −1.0 × 10−3 ± 2.7 × 10−4*** |
| k-fold (rs) | 0.93 ± 0.039 | 0.87 ± 0.058 | 0.90 ± 0.046 | 0.91 ± 0.041 |