Figure 7From: What is the influence of a reduction of planktivorous and benthivorous fish on water quality in temperate eutrophic lakes? A systematic reviewEffect sizes based on mean Secchi depth and chlorophyll a concentration. All biomanipulations with available data are represented in the diagram. âBeforeâ and âDuringâ periods have been defined as in Figures 5 and 6. All Secchi depth and chlorophyll a data in this and the following figures and tables are based on summer means.Back to article page