Fig. 4From: Controlling blooms of Planktothrix rubescens by optimized metalimnetic water withdrawal: a modelling study on adaptive reservoir operationAverage (blue points) and the maximum (red points) concentration of P. rubescens (as chlorophyll a) in the metalimnion during summer (between 10 and 12Â m, from days 180 to 240) under scenario R and V (see Table 1 for details). The red dashed line indicates the threshold of P. rubescens concentration calculated from the WHO reportBack to article page