Table 3. Comparisons of fish biomass without sharks by island, orientation and year.

Results of generalized linear mixed models fit with a gamma error structure and an inverse link function. Unplanned post hoc multiple comparisons tested using a Tukey’s honestly significant difference (HSD) test. Only significant multiple comparisons are shown. Exposure × year factors with the same letter are not significantly different (α = 0.05).

Factor	Estimate	Std. error	Z	P	Multiple comparisons
Island	0.092	0.191	0.48	0.631
Orientation	0.177	0.200	0.89	0.376
Year	0.366	0.109	3.35	<0.001	13 > 14
Orientation × year	0.281	0.109	2.58	0.009**	13SE 14NW 14SE 14NW A AB B C