Table 4. Results of multiple regression and AIC model selection for factors predicting habitat use by sandpipers foraging at low tide. Note that other factors, including predators and attacks per hour and mudflat area had to be excluded from these models because of multicollinearity. C. v. density refers to August density of C. volutator. Dist from cover refers to maximum distance from cover that a bird can forage on a mudflat. AIC model likelihood was calculated from AICc values.
| |
| |
|
Model |
df |
F |
p |
R2 |
AIC likelihood |
Independent variables |
Standardized beta coefficient |
| |
|
1 |
1,38 |
3.84 |
0.057 |
0.09 |
<0.0001 |
C. v. density |
-0.30 |
|
2 |
2,37 |
22.9 |
<0.001 |
0.55 |
0.696 |
C. v. density |
0.30 |
|
|
|
|
|
|
|
Dist from cover |
0.91 |
|
3 |
1,38 |
38.3 |
<0.001 |
0.50 |
0.304 |
Dist from cover |
0.71 |
|
| |
|