Nutrient uptake kinetics of U. prolifera and U. linza in laboratory conditions. The kinetics parameters Vmax (maximum uptake rate), Ks (half-saturation constant), Vmax/Ks and
R2 (correlation coefficient) at different time intervals are shown. Data were fitting to the Michaelis–Menten equation estimated by nonlinear least-squares regression using
SigmaPlot (n = 5).