“…Zooplankton dynamics in subtropical lakes have been studied intensively, primarily in the 1970s and 1980s, much of the work being performed in Florida, U.S.A., where there are over 2000 lakes of differing size, trophic status, acidity and other features (Fernald & Purdum, 1998). The resulting generalities on subtropical macro-zooplankton include: (1) maximal biomass occurs during spring and/or autumn, separated by a mid-summer minimum (Nordlie, 1976;Schmitz & Osborne, 1984); (2) copepods dominate, particularly in summer, when cladocerans are rare or absent (Nordlie, 1976); (3) large Daphnia are absent (Blancher, 1984;Elmore, Cowell & Vodopich, 1984); and (4) there is little control of phytoplankton by macro-zooplankton grazing (Crisman & Beaver, 1990).…”