Fig. 4

MDS-plot resulting from classification analysis (Bray–Curtis similarities) of macrozoobenthos from Mejillones Bay, northern Chile, using abundance data. Most samples from the 5-m level (open circle) are more closely related and separated from the rest of the samples (30% level). Furthermore, the majority of the 20 m samples (open square) are grouped in one cluster (35% level) and nearly all 10 m samples (open triangle) occur in one cluster including some samples from other depth levels. Samples taken during EN 1997–1998 are shaded