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A control theory point of view on Beverton-Holt equation in population dynamics and some of its generalizations. (English) Zbl 1137.92034
Summary: This paper is devoted to develop some “ad hoc” Control Theory formalism useful for the famous Beverton-Holt equation arising in population dynamics. In particular, the inverse equation is redefined for a finite set of consecutive samples under the equivalent form of a discrete linear dynamic system whose input sequence is defined by the sequence of carrying capacity gains and the unforced dynamics is directly related to the intrinsic growth rate. For that purpose, the environment carrying capacity gains are allowed to be time-varying and designed for control purposes. The controllability property is also investigated on this dynamic extended system as well as the stability, equilibrium points and attractor oscillating trajectories. The properties of the dynamic system associated with the Beverton-Holt inverse equation allow to extrapolate in a simple dual way the above properties to the standard Beverton-Holt equation. Some generalizations are given for the case when there are extra parameters in the equation or when the system is subject to the presence of additive disturbances. In all cases, a reference model being also of Beverton-Holt type is proposed to be followed by the control system.

92D40 Ecology
39A11 Stability of difference equations (MSC2000)
37N35 Dynamical systems in control
37N25 Dynamical systems in biology
Full Text: DOI
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