Ecology models and newton vector fields

Julian I. Palmore, Scott A. Burns, Harold E. Benzinger

Research output: Contribution to journalArticlepeer-review

Abstract

We generate phase plane portraits of autonomous differential equations by constructing integrals of motion-even in nonconservative systems, where no integrals produced by quadrature exist. These phase plane portraits are produced with no propagated error. Phase portraits do not usually display the parametrization along orbits. The use of high resolution color graphics allows us to display this parametrization conveniently. We examine three ecology models-the logistic equation in the complex domain, and the predator-prey and competing species equations in the real domain.

Original languageEnglish (US)
Pages (from-to)221-232
Number of pages12
JournalMathematical Biosciences
Volume90
Issue number1-2
DOIs
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Statistics and Probability
  • Modeling and Simulation
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)
  • Applied Mathematics

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