Dynamics and equilibria of ecological predator–prey networks as nature’s supply chains

Anna Nagurney and Ladimer S. Nagurney

Transportation Research Part E: Logistics and Transportation Review, 2012, vol. 48, issue 1, 89-99

Abstract: In this paper, we develop a dynamic network model of ecological food webs and prove that the set of stationary points of the projected dynamical system coincides with the set of solutions of a variational inequality governing the equilibrium of predator–prey networks. We also establish the equivalence between the ecological models and supply chain network equilibrium models and highlight the connections to spatial price equilibrium problems. We propose an algorithmic scheme, provide convergence results, and apply it to a food web drawn from a fisheries application.

Keywords: Supply chains; Food webs; Predator–prey models; Projected dynamical systems; Variational inequalities; Transportation and logistics; Fisheries (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1016/j.tre.2011.07.007

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