Table 5 Second-stage model selection results for estimating monthly survival probability (MSP) of PTT-implanted tundra swans from Alaska, USA, 2008–2012. Results are based on a version of the data containing 15 mortalities (discrepancies censored), and include the top two approximating models from the a priori model set (in bold font), and six additional models containing combinations of parameters from these two models. Models are ranked based on Akaike’s Information Criterion adjusted for small sample sizes (AICc) and model weight (w i) that are re-standardized considering only these 8 models. K = number of model parameters; AICc of top model = 164.61
From: Demographic outcomes of diverse migration strategies assessed in a metapopulation of tundra swans
MSP model | K | ΔAICc | w i | Deviance |
|---|---|---|---|---|
(Age * Yr1) + (Yrs2-4 * Wintering area) | 5 | 0.00 | 0.51 | 154.58 |
(Age * Yr1 + Wintering area) + (Yrs2-4 * Wintering area) | 7 | 2.60 | 0.14 | 153.14 |
Age * Yr1 + Yrs2-4 + Wintering area | 6 | 3.39 | 0.09 | 155.95 |
Wintering area | 3 | 3.57 | 0.09 | 162.17 |
Age * Yr1 + Yrs2-4 | 3 | 3.66 | 0.08 | 162.26 |
(Age * Yr1 + Yrs2-4) * Wintering area | 8 | 4.62 | 0.05 | 153.14 |
(Age * Yr1) + (Yrs2-4 + Wintering area) | 5 | 6.25 | 0.02 | 160.83 |
Age * Yr1 * Wintering area + Yrs2-4 | 6 | 8.27 | 0.01 | 160.83 |