Fig. 2

Kinetics of cadmium accumulation in rhizomes and roots of Cymodocea nodosa at different concentrations of cadmium in water. Values plotted are mean tissue concentration ± standard error (n = 3); bold lines are the accumulation kinetics calculated using a Michaelis–Menten-type equation (rhizomes at 0.5, 10, 20 and 40 mg L⁻¹ and roots at 0.5 and 5 mg L⁻¹) or an S equation (rhizomes at 5 mg L⁻¹ and roots at 10 and 20 mg L⁻¹)