PERMANOVA results for the analysis of fish assemblages on the basis of the Jaccard resemblance measure in response to location, depth stratum and transect.

Location (Lo, fixed, 3 levels), depth stratum (De, fixed, 7 levels) and transect (Tr, random, nested within Lo, 6 replicates). Similar results were obtained using the taxonomic resemblance measure (Γ+). Partitioning was done using Type I (sequential) sums of squares and P-values were obtained for each term using 9999 permutations under the reduced model. The estimated sizes of effects for each term in the model are shown in Jaccard units as the square root of the components of variation, and variation attributable to each individual term is also expressed as a percentage of the total (%). Note that 2 of the original 120 samples were omitted prior to analysis, as there were no fish recorded in those deployments.