Figure 5

Effect of variation of toxin diffusivity and absorption constant on parameter δ . Toxin diffusivity: (a) κ _T =10^-4, (b) κ _T =10^-3. Solid (u_A^{0,e}=u_A^{0,i}=1) and dashed (u_A^{0,e}=1, u_A^{0,i}=4.87) lines correspond to δ determined by advection-diffusion models, and bullets (u_A^{0,e}=u_A^{0,i}=1) and circles (u_A^{0,e}=1, u_A^{0,i}=4.87) to δ determined by well-mixed models for γ: 0.1 (1), 0.01 (2).