Table 1. Results of the three factor analyses of variance assessing differences between regions, locations and sites in (a) Mass standardised bite rates from the fish community feeding on the algal bioassays (PERMANOVA, data fourth-root transformed), (b) Roving herbivorous fish community composition (PERMANOVA, data fourth-root transformed) and (c) Total roving herbivorous fish biomass (ANOVA).

	(a) Feeding fish community				(b) Fish community composition				(c) Total herbivorous fish biomass
Source	df	MS	Pseudo-F	P	df	MS	Pseudo-F	P	df	MS	F	P
Region	1	34076	10.156	0.002	1	66643	11.855	0.001	1	85.958	13.57	0.021
Location (Reg)	4	3392.7	1.5847	0.152	4	5625	3.8345	0.001	4	6.334	4.93	0.042
Site (Loc (Reg))	6	2149.6	2.2401	0.01	6	1467.1	1.3954	0.057	6	1.286	0.89	0.505
Residual	22	959.58			59	1051.4			59	1.4370

Significant probabilities are indicated in bold.