Simple model to illustrate Michaelis-Menten equation for nutrient uptake by phytoplankton.
The equation is:
P = Ppot S / (Ks + S)
P: Nutrient-limited production (e.g. d-1, or mg C m-2 d-1) Ppot: Potential production (same units as P) S: Nutrient concentation (e.g. umol N L-1) Ks: Half saturation constant for nutrient (same units as S)
The model contains no state variables, just illustrates the rate of production, by making the value of S equal to the timestep (in days). Move the slider to the left for more pronounced hyperbolic response, to the right for linear response.