Environmental versus demographic variability in two-species predator-prey models.

We investigate the competing effects and relative importance of intrinsic demographic and environmental variability on the evolutionary dynamics of a stochastic two-species Lotka-Volterra model by means of Monte Carlo simulations on a two-dimensional lattice. Individuals are assigned inheritable predation efficiencies; quenched randomness in the spatially varying reaction rates serves as environmental noise. We find that environmental variability enhances the population densities of both predators and prey while demographic variability leads to essentially neutral optimization.

• Publication year

  2012

• Venue

  Physical Review Letters

• Publication date

  2012-06-05

• Fields of study

  Biology, Medicine, Physics, Environmental Science

• Identifiers
  DOI 10.1103/PhysRevLett.110.048105arXiv 1206.0973PMID 25166206
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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