1,740
Views
9
CrossRef citations to date
0
Altmetric
Original Articles

Complex behaviour in four species food-web model

, &
Pages 440-456 | Received 02 Aug 2010, Accepted 25 Aug 2011, Published online: 27 Sep 2011

Figures & data

Figure 1. Energy flow diagram of the model.

Figure 1. Energy flow diagram of the model.

Figure 2. Dynamics of the three-dimensional subsystem in the absence of the middle predator w. (a) No periodic solutions in x y- and x z-planes; (b) no periodic solutions in the x z-plane, but periodic solution in the x y-plane; (b) no periodic solutions in the x y-plane, but periodic solution in the x z-plane and (c) periodic solutions in both x y- and x z-planes.

Figure 2. Dynamics of the three-dimensional subsystem in the absence of the middle predator w. (a) No periodic solutions in x y- and x z-planes; (b) no periodic solutions in the x z-plane, but periodic solution in the x y-plane; (b) no periodic solutions in the x y-plane, but periodic solution in the x z-plane and (c) periodic solutions in both x y- and x z-planes.

Figure 3. Bifurcation diagram with respect to w 2∈(3.5, 5.5) for data set (Equation17).

Figure 3. Bifurcation diagram with respect to w 2∈(3.5, 5.5) for data set (Equation17).

Figure 4. Maximal Liapunov exponent versus w 2 for data set (Equation19).

Figure 4. Maximal Liapunov exponent versus w 2 for data set (Equation19).

Figure 5. Attractor in the x y z-phase space for data set (Equation19) at w 2=5.0.

Figure 5. Attractor in the x y z-phase space for data set (Equation19) at w 2=5.0.

Figure 6. Periodic Behaviour for data set (Equation20). (a) Limit cycle in x w z-phase space and (b) time series of y.

Figure 6. Periodic Behaviour for data set (Equation20). (a) Limit cycle in x w z-phase space and (b) time series of y.

Figure 7. Periodic behaviour for data set (Equation21). (a) Limit cycle in the x y z-phase space and (b) time series of w.

Figure 7. Periodic behaviour for data set (Equation21). (a) Limit cycle in the x y z-phase space and (b) time series of w.

Figure 8. Periodic behaviour for data set (Equation22). (a) Limit cycle in the x y z-phase space and (b) time series of w.

Figure 8. Periodic behaviour for data set (Equation22). (a) Limit cycle in the x y z-phase space and (b) time series of w.

Figure 9. Complex dynamics for data set (Equation23). (a) Attractor in the x y z-phase space and (b) time series of w.

Figure 9. Complex dynamics for data set (Equation23). (a) Attractor in the x y z-phase space and (b) time series of w.