Dynamics Analysis of a Nutrient-Plankton Model with a Time Delay

Figure 1

(a) Relationship between the conversion frequency of stability switches for positive equilibrium and the external source of nutrients , where the blue spots represent the value of , the black line represents the boundary of the existence of , the green line represents the boundary of the appearance of , and the red line represents the disappearance of . (b) Interval values for stability switches and Hopf bifurcation about , where the green diamonds and the blue dots represent and , respectively, and the honeydew and deep pink rectangles, respectively, represent the stable and unstable interval of .

(a)

(b)