Figure 4.

Sensitivity analysis of microbial parameters used in the organic carbon model. Numerical values represent the first-order (in orange) and total-effect (in blue) Sobol indices of the selected parameters: maximum growth rate ( ${\mu }_{\max }$ ), cell-specific metabolic rate ( $m$ ), cell carbon content ( ${\alpha }_D$ ), carrying capacity ( $N_{\max }$ ), cell specific extracellular enzyme activity ( ${\gamma }_{cell}$ ), half-velocity constant for carbon uptake ( $K_D$ ), and starting cell density ( $N_0$ ). First-order indices show the sensitivity of the model when varying only the parameter in question. Total-effect indices show the sensitivity of the model when varying the selected parameter in conjunction with the other parameters selected in this analysis. Values shown are rounded at 10⁻².