Table 1.

PERMANOVA partitioning of fish assemblages on the basis of Jaccard dissimilarities in response to Location (Lo, fixed, 7 levels), Depth (De, fixed, 7 levels) and Transects (Tr, random, nested within Lo) using Type I (sequential) sums of squares.

Source	df	MS	Pseudo-F	P	Sqrt(Component of variation)	%
Lo	6	34947	8.486	0.0001	25.5	12.4
De	6	45295	20.235	0.0001	30.0	17.2
Tr(Lo)	70	3068	1.386	0.0001	14.2	3.8
Lo × De	33	10806	4.882	0.0001	35.8	24.4
Residual	225	2200			47.0	42.2
Total	340

P-values were obtained for each term in the model using 9999 permutations under a reduced model. Estimated sizes of effects for each term in the model are shown in Jaccard units as the square-root of the pseudo multivariate component of variation. Variation attributable to each term in the model is also expressed as a percentage of the total (%). Note that 4 of the original 345 video deployments were omitted prior to analysis, as there were no fish recorded in them.