Environmental conditions of the base scenario

Environmental variables of the 30 lakes correlate with each other, mainly nutrient and turbidity (kD) (0.79***) and latitude andmaxTemp (0.51**). The mean latitude of the lakes within the groups are for clear lakes 47.56°, for intermediate lakes 47.81° and for turbid lakes 47.86°. The mean maximal summer temperature is in clear lakes 21.0°C, in intermediate lakes 24.4°C, and in turbid lakes 25.1°C. The mean extinction coefficient of light (kD , as measure for turbidity) is in clear lakes 0.27 m−1, in intermediate lakes 0.40 m−1, and in turbid lakes 0.64 m−1. The mean total phosphorus content is in clear lakes 0.0069 mg l−1, in intermediate lakes 0.0117 mg l−1, and in turbid lakes 0.0292 mg l−1.