Table 4. Parameter estimates from best GLMM to describe number of dugongs per image, as a function of the selected environmental covariate (turbidity; modelled as a function of depth, water clarity and an interaction between these variables).
| Name | Estimate | Standard error | t-value | Within-random effects correlation | |
|---|---|---|---|---|---|
| Fixed effects | Intercept | -9.4191 | 0.2310 | -40.77 | |
| Turbidity: depth | -3.5806 | 0.2544 | -14.08 | ||
| Turbidity: clearness | -1.2481 | 0.1273 | -9.81 | ||
| Turbidity: interaction | 4.1117 | 0.4645 | 8.85 | ||
| Random effects | Flight | 0.39777 | 0.091 | ||
| Transect | 0.27494 | 0.064 | |||
| Residual | 3.97985 |