Data on individual survival, growth and reproduction of 'Daphnia magna' individuals, as collected during a laboratory experiment. The aim of this study was to quantify effects of temperature, genetic background and population density on the dynamics of 'Daphnia magna' populations. In this experiment, 40 populations of 'Daphnia magna', starting with 20 individuals, were followed during 80 days. Twice a week, three individuals were arbitrarily picked from each population, and isolated for three or four days in transparent tubes that were placed inside each aquarium. Results of this study have been published in ‘Population-level responses to temperature, density and clonal differences in 'Daphnia magna' as revealed by Integral Projection Modeling’ (Bruijning et al., 'Functional Ecology' 2018).