Role of zooplanktonic functional groups in a shallow mesotrophic reservoir

Abstract: Aim Zooplankton functional groups play an important role in lake functioning and can readily respond to environmental changes may be associated with phytoplankton changes. In warmer regions, zooplankton species have a smaller body size, which decreases their grazing capacity, attenuating top-down control throughout phytoplankton. We evaluated density biomass of relationship algal horizontal reservoir zonation (pelagic, sublittoral, eulittoral zones) the shallow reservoir. hypothesize that are fluctuations zonation. Methods Changes structure group controlling limnological variables were verified at three sampling stations: pelagic, zones mesotrophic Results distributed seven groups. The not clearly variations However, zonation, where specific found zones. Conclusions related but due dominance small organisms.