Fig. 5.

a Plots of the nutrient concentration S(t) (first row), the phenotype distributions $n_H(x,t)$ (second row) and $n_L(x,t)$ (third row), and the population sizes ${\rho }_H(t)$ (fourth row, red line) and ${\rho }_L(t)$ (fourth row, blue line) obtained by solving numerically the system of PDEs (3), where S(t) is defined according to (79) with $T=5$, $A=20$ and $M=70$. The values of the model parameters are defined as in Table 1 with ${\beta }_H=0.025$. b–d Same as column a but for $A=M=50$ (column b), $A=M=10$ (column c), and $A=M=0.1$ (column d) (color figure online)