Nonlinear Analysis in a Nutrient-Algae-Zooplankton System with Sinking of Algae

Figure 2

The dispersion relation Re(𝜆). The critical mode 𝑘=𝑘_𝑐 is obtained for the first unstable point at 𝑣=𝑣_𝑐 and 𝑁=𝑁_𝑐, respectively, while other curves correspond to different values of 𝑁 and 𝑣. (a) 𝑁=0.32, (1)𝑣=0.2, (2)𝑣=𝑣_𝑐, (3)𝑣=0.1; (b) 𝑣=0.132, (1)𝑁=0.31,  (2)𝑁=𝑁_𝑐, (3)𝑁=0.33.

(a)

(b)