Nonlinear Dynamics of a Nutrient-Plankton Model

Figure 3

(a) A typical neutral curve 𝑣, defined using expression (11) for different values of 𝑁₀. (b) Numerical calculation of the stability on (𝑣,𝑁₀) space. (c) An illustration of the dispersion relation (Re(𝜆),Im(𝜆) versus the wave number 𝑘), where 𝑑_𝑃=0.3 (m²·day⁻¹) and the other parameters are given in Table 1. Blue line: 𝑣=0.6>𝑣_𝑐≈0.358 (m·day⁻¹); red line: 𝑣=𝑣_𝑐≈0.358 (m·day⁻¹); green line: 𝑣=0.1<𝑣_𝑐≈0.358 (m·day⁻¹).

(a)

(b)

(c)