Fig. 6

Relationship between the beta diversity (using the Whittaker method) of the crustacean assemblage and (a) temperature, (b) Al, (c) Pb, (d) Fe, (e) Mn, (f) As, (g) the seasons, (h) impact vs. control areas, and (i) the interaction between (g) and (h), sampled in the Itacaiúnas and Parauapebas river basins, in the Carajás Mosaic, Brazil. + indicates a marginally significant difference (α = 0.10).