Revised estimates for the biomass and production of zooplankton in Lake George, Uganda

Abstract

Summary The relationship of total body length to formalin dry weight for individuals of Thermo‐cyclops hyalinus and Mesocyclops leuckarti, from the tropical Lake George, Uganda, is given and shows that previous estimates of individual biomass and, therefore, of zooplankton standing crop and production based on them, were too high. The annual mean standing crop of total Crustacea, in 1969–70 was 828 mg (dw) m −2 and for T. hyalinus, the dominant species, 559 mg (dw) m −2 Biomass tended to be higher in the mid‐lake area than inshore. The annual mean production of T. hyalinus is now estimated to be 44 mg (dw) m −2 day.