Simplified sensitivity analysis applied to a nutrient-biomass model

Sensitivity analysis is a technique used in the identification of model aspects most susceptible to uncertainties in model development. The parameter variation method is one of such techniques for analysing models for sensitivity. The paper examines the application of a simplified parameter variation analysis to a nutrient-biomass model. In particular, model coefficients are examined with graphs of normalised sensitivity coefficients developed as a function of time of simulation. From the analysis it is concluded that model variables are most sensitive to variations in algal loss rate and phosphorus yield coefficient. Furthermore, it is confirmed that the system is phosphorus-limited.