Table 4. Comparisons of biomass among trophic groups by island and orientation.
Results of generalized linear mixed models fit with negative binomial error structure. Unplanned post hoc multiple comparisons tested using a Tukey’s honestly significant difference (HSD) test. Only significant multiple comparisons are shown.
| Estimate | Std. error | Z | P | |
|---|---|---|---|---|
| A. Apex predators | ||||
| Island | 0.673 | 0.692 | 0.97 | 0.33 |
| Orientation | 3.071 | 1.731 | 1.77 | 0.07 |
| Year | 0.001 | 0.650 | 0.01 | 0.99 |
| B. Planktivores | ||||
| Island | 0.339 | 0.291 | 1.17 | 0.24 |
| Orientation | 0.284 | 0.297 | 0.96 | 0.33 |
| Year | 0.609 | 0.302 | 2.02 | 0.04* |
| C. Carnivores | ||||
| Island | 0.496 | 0.714 | 0.69 | 0.49 |
| Orientation | 0.705 | 0.714 | 0.99 | 0.32 |
| Year | 0.681 | 0.711 | 0.96 | 0.34 |
| D. Herbivores | ||||
| Island | 0.435 | 1.022 | 0.43 | 0.67 |
| Orientation | 0.662 | 0.992 | 0.67 | 0.50 |
| Year | 0.427 | 0.941 | 0.45 | 0.65 |
Notes.
*
p < 0.05.