Dimorphism by Singularity Theory in a Model for River Ecology

Martin Golubitsky, Wenrui Hao, King Yeung Lam, Yuan Lou

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Geritz, Gyllenberg, Jacobs, and Parvinen show that two similar species can coexist only if their strategies are in a sector of parameter space near a nondegenerate evolutionarily singular strategy. We show that the dimorphism region can be more general by using the unfolding theory of Wang and Golubitsky near a degenerate evolutionarily singular strategy. Specifically, we use a PDE model of river species as an example of this approach. Our finding shows that the dimorphism region can exhibit various different forms that are strikingly different from previously known results in adaptive dynamics.

Original languageEnglish (US)
Pages (from-to)1051-1069
Number of pages19
JournalBulletin of Mathematical Biology
Issue number5
StatePublished - May 1 2017

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Immunology
  • Mathematics(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Pharmacology
  • Agricultural and Biological Sciences(all)
  • Computational Theory and Mathematics


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