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Model ranking for models estimating age-specific survival and recapture probability as a function of environmental stochasticity |
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| Model |
ΔQAICc |
wQAICc |
k |
|
|
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| High density (1951–1964) |
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| ϕ(age-pup*t/pup*t) p(t) |
0.000 |
0.804 |
35 |
| ϕ(age-mother*t/mother*t) p(t) |
2.830 |
0.195 |
34 |
| ϕ(age-t/t) p(t) |
16.950 |
<0.001 |
30 |
| ϕ(age-pup*t/t) p(t) |
24.810 |
<0.001 |
34 |
| ϕ (age-mother*t/t) p(t) |
24.820 |
<0.001 |
34 |
| Low density (1993–1999) |
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| ϕ (age-mother*t/mother*t)p(t) |
0.000 |
0.767 |
24 |
| ϕ (mother*t)p(t) |
2.380 |
0.233 |
18 |
| ϕ (age-pup*t/pup*t)p(t) |
17.060 |
<0.001 |
22 |
| ϕ (age-t/t)p(t) |
32.800 |
<0.001 |
17 |
| ϕ (age-pup*t/t)p(t) |
40.820 |
<0.001 |
21 |
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Effects of age (age-juvenile/adult), time (t), and environmental conditions represented by the Southern Oscillation Index (SOI) during the newly weaned seal's foraging period (Jan-Oct) (pup), and during a mother's pre-partum foraging period (Jan-Oct of the previous year) (mother) on the probability of survival (ϕ) of southern elephant seals during the high- (1951–1964) and low-density (1993–1999) eras. Models are ranked according to their Akaike weights (wQAICc), the relative change in AICc score (ΔQAICc), and number of parameters (k) based on an inflation factor (ĉ) of 1.3861. | |||
de Little et al. BMC Ecology 2007 7:3 doi:10.1186/1472-6785-7-3 |
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