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Theory and Modern Applications

Figure 1 | Advances in Difference Equations

Figure 1

From: Dynamics of a delayed phytoplankton-zooplankton system with Crowley-Martin functional response

Figure 1

The global attractivity of system ( 3 ). (a)-(b) Time series. (c) Phase portrait. We take the parameters \(a=1\), \(b=5\), \(c=2\), \(d=6\), \(e=0.001\), \(h=0.3\), and \(g=5\), and we obtain ten sets of different initial values \((0.01, 0.01)\), \((0.02,0.02)\), \((0.03, 0.03)\), \((0.04,0.04)\), \((0.63,0.01)\), \((1.3, 0.01)\), \((2.3,0.01)\), \((2.56,0.02)\), \((2.80, 0.05)\), and \((2.85, 0.03)\). Numerical simulations show for system (3) the positive equilibrium point \(E^{*}\) has global attractivity when \(\tau=0\).

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