Table 4.
Tweedie GLM to predict moray abundance on BRUVS including shark abundance
| Factors | Degrees of freedom (DF) | Deviance | Residual DF | Residual deviance | F-value | p-value | Deviance explained |
|---|---|---|---|---|---|---|---|
| Null | 66 | 28.00 | |||||
| Shark MaxN | 1 | 7.24 | 65 | 20.76 | 30.81 | <0.0001 | 0.26 |
| Protection status | 1 | 0.53 | 64 | 20.23 | 2.24 | 0.14 | 0.02 |
| Reef complexity | 1 | 4.83 | 63 | 15.40 | 20.57 | <0.0001 | 0.17 |
| Sum of deviance explained | 0.45 | ||||||
Analysis of deviance table for the Tweedie GLM to determine the effects of key anthropogenic (protection status [open or closed to fishing]), habitat (mean reef complexity score [0–5]), and ecological (mean shark MaxN) factors on the reef-level occurrence (mean MaxN) of morays on reefs throughout the greater Caribbean (n = 67 reefs).