Biplot of a Principal Component Analysis (PCA) showing the associations of local taxon richness among groups and with fish biomass (A); and the associations of total taxon richness among groups with fish biomass (B).

<p>SUBM = submerged and floating vegetation, EMERG = emergent vegetation, MI = macro-invertebrates, HEMI = hemipterans, MOLL = molluscs, ZP = zooplankton and PP = phytoplankton. All groups are represented as species richness, except MI and PP where the number of families and number of genera are shown, respectively. Black triangles represent the centroids of the management types. The management centroids and fish biomass are plotted as supplementary variables to not influence the ordination.