Figure 2From: Can differences in phosphorus uptake kinetics explain the distribution of cattail and sawgrass in the Florida Everglades?P uptake kinetic curves. Examples of relationships between the concentration of inorganic phosphorus (P) in the root chambers and the rate of P uptake of single specimens of (A) Cladium mariscus spp. jamaicense and (B) Typha domingensis acclimated to low (5 μg l-1) P concentrations (solid lines and closed symbols) and to high (500 μg l-1) P concentrations (dashed lines and open symbols). Plants were grown at low (<0.5 mg l-1) oxygen concentration in culture solutions. Uptake was measured by P depletions of root solutions followed by stepwise increments of the P concentrations. The relationship was fitted to a modified Michaelis-Menten model (curves).Back to article page