Nonlinear Dynamics of a Nutrient-Plankton Model

Figure 7

Simulation in two-dimensional space. The figures show the density levels of the phytoplankton on the 1000th day, where the width is 100 m and the depth is 300 m. (a) 𝑑_𝑃=0.3 (m²·day⁻¹) and 𝑣=0.9 (m·day⁻¹). (b) 𝑑_𝑃=1.038 (m²·day⁻¹) and 𝑣=1.2 (m·day⁻¹). (c) 𝑑_𝑃=1.038 (m²·day⁻¹) and 𝑣=0.9+0.25∗sin(4∗𝜋∗𝑥/100). The other parameters are given in Table 1.

(a)

(b)

(c)