(W Australia fish diets)

Re-open the workspace WA fish ws from C:\Examples v7\WA fish diets, which will provide an example where a 3-d MDS is necessary to get a reliable feel for the multivariate structure. The workspace WA fish ws should contain a data sheet Data2 of the dietary assemblage of (pooled) guts of 7 marine fish species from W Australia, with uneven numbers of replicate pools per species. If not available, open WA fish diets %vol.pri; the Data2 sheet simply excluded three samples, A9, B3, B4, which had much lower total gut content than the remaining 65 pools – see Section 3 on deselecting samples. Take Pre-treatment>Standardise>(Standardise•Samples) & (By•Total) and transform the result with Pre-treatment>Transform(overall)>(Transformation: Square root) and Analyse>Resemblance>(Measure•Bray-Curtis similarity), renaming this WA B-C sim.