Density and richness of plant-associated macroinvertebrates, fish and large free-swimming potentially predatory macroinvertebrates and periphyton biomass in the Mediterranean and cold temperate region.

Average (±SE) of density (ind. m−2) and richness of plant-associated macroinvertebrates (macroinv.), density of fish and large free-swimming potentially predatory macroinvertebrates (ind. m−2) and periphyton biomass (mg m−2) and p-values for the nested ANOVAs. Two-way nested ANOVA for density and richness of plant-associated macroinvertebrates and periphyton with factors ‘region’ (2 levels, cold temperate ‘T’ and Mediterranean ‘M’) and ‘lake’ (4 levels) nested inside region and three-way nested ANOVA for the density of fish and large free-swimming macroinvertebrate predators with ‘habitat’ (2 levels, open areas ‘O’ and submerged plants ‘S’) as an additional factor. The factor ‘lake’ nested inside region was significant for all variables (p