Characteristic return times for harvested population models with time lag

Fred Brauer

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The characteristic return time for a population model measures the time required for the system to return to equilibrium if perturbed. We show that for a one-dimensional model with a time lag an increase in the harvest rate (for constant-yield harvesting) or the harvest effort (for constant-effort harvesting) may produce a decrease in the characteristic return time. This depends on the nature of the model and the size of the time lag, and may give a means of testing the validity of models experimentally.

Original languageEnglish (US)
Pages (from-to)295-311
Number of pages17
JournalMathematical Biosciences
Issue number3-4
StatePublished - Aug 1979
Externally publishedYes

ASJC Scopus subject areas

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


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