Table 4.
A: GLMM exploring the effects of brood type (broods with extra-pair chicks vs. broods with no extra-pair chicks) on hatching and fledging success, B: Relative variable importance given by Akaike weights (ΣAIC ω )
|
A. |
Variables |
Model |
K |
AICc |
ΔAICc |
ω
|
| |
Hatching success |
Null |
1 |
74.1 |
0.00 |
0.523 |
| |
(n = 65) |
Brood type |
2 |
76.1 |
1.96 |
0.196 |
| |
|
Year |
3 |
76.6 |
2.46 |
0.153 |
| |
|
Year + brood type + year* brood type |
5 |
78.1 |
3.97 |
0.072 |
| |
|
Year + brood type |
4 |
78.6 |
4.47 |
0.056 |
| |
Fledging success |
Year |
3 |
96.6 |
0.00 |
0.722 |
| |
(n = 55) |
Year + brood type |
4 |
99.0 |
2.42 |
0.215 |
| |
|
Null |
1 |
102.7 |
6.07 |
0.035 |
| |
|
Year + brood type + year* brood type |
4 |
104.1 |
7.54 |
0.017 |
| |
|
Brood type |
2 |
104.9 |
8.25 |
0.012 |
|
B. |
Variables |
Source of variation |
ΣAIC
ω
|
|
|
|
| |
Hatching success |
Brood type |
0.32 |
|
|
|
| |
|
Year |
0.28 |
|
|
|
| |
|
Year*brood type |
0.07 |
|
|
|
| |
Fledging success |
Year |
0.95 |
|
|
|
| |
|
Brood type |
0.24 |
|
|
|
| Year*brood type | 0.02 |
K = number of parameters. Asterisk means the interaction.