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Impact of proliferation strategies on food web viability in a model with closed nutrient cycle

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  • Szwabiński, Janusz

Abstract

A food web model with a closed nutrient cycle is presented and analyzed via Monte Carlo simulations. The model consists of three trophic levels, each of which is populated by animals of one distinct species. While the species at the intermediate level feeds on the basal species, and is eaten by the predators living at the highest level, the basal species itself uses the detritus of animals from higher levels as the food resource. The individual organisms remain localized, but the species can invade new lattice areas via proliferation. The impact of different proliferation strategies on the viability of the system is investigated. From the phase diagrams generated in the simulations it follows that in general a strategy with the intermediate level species searching for food is the best for the survival of the system. The results indicate that both the intermediate and top level species play a critical role in maintaining the structure of the system.

Suggested Citation

  • Szwabiński, Janusz, 2012. "Impact of proliferation strategies on food web viability in a model with closed nutrient cycle," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(22), pages 5479-5489.
    • Handle: RePEc:eee:phsmap:v:391:y:2012:i:22:p:5479-5489
    DOI: 10.1016/j.physa.2012.06.030
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