Summary of the factorial (for species richness and biomass) and nested (for species composition) analyses of variance (ANOVA) for nutrient fluxes and bacterioplankton production.

The analyses were performed independently considering invertebrate biomass and invertebrate richness as fixed orthogonal factors, whereas invertebrate species composition was nested under invertebrate species richness irrespective of biomass. Brackets indicate the nesting factor. Bold P-values indicate a statistically significant effect (P