Table 3.
Results from ANCOVAS for the isotope study testing for the effects of trophic position (TP) and lake on isotopic diet specialization (average distance to centroid, ), degree of omnivory (range of trophic position) and range of littoral-pelagic foraging
| df | F-value | P-value | |
|---|---|---|---|
| Distance to centroid | |||
| TP | 1 | 0.155 | 0.701 |
| Lake | 1 | 0.059 | 0.812 |
| TP2 | 1 | 9.204 | 0.011 |
| TP × lake | 1 | 0.053 | 0.822 |
| Lake × TP2 | 1 | 0.017 | 0.898 |
| Residuals | 11 | ||
| Range of trophic positions | |||
| TP | 1 | 1.125 | 0.312 |
| Lake | 1 | 0.758 | 0.403 |
| TP2 | 1 | 4.932 | 0.048 |
| TP × lake | 1 | 0.287 | 0.603 |
| Lake × TP2 | 1 | 0.040 | 0.847 |
| Residuals | 11 | ||
| Range of littoral-pelagic foraging | |||
| TP | 1 | 7.470 | 0.020 |
| Lake | 1 | 0.757 | 0.403 |
| TP2 | 1 | 10.303 | 0.008 |
| TP × lake | 1 | 7.048 | 0.022 |
| Lake × TP2 | 1 | 0.029 | 0.868 |
| Residuals | 11 | ||