Journal of Applied Probability
- J. Appl. Probab.
- Volume 48A (2011), 249-260.
Population-size-dependent, age-structured branching processes linger around
Dependence of individual reproduction upon the size of the whole population is studied in a general branching process context. The particular feature under scrutiny is that of reproduction changing from supercritical in small populations to subcritical in large populations. The transition occurs when the population size passes a critical threshold, known in ecology as the carrying capacity. We show that populations either die out directly, never coming close to the carrying capacity, or grow quickly towards the carrying capacity, subsequently lingering around it for a time that is expected to be exponentially long in terms of a carrying capacity tending to infinity.
J. Appl. Probab., Volume 48A (2011), 249-260.
First available in Project Euclid: 18 October 2011
Permanent link to this document
Digital Object Identifier
Mathematical Reviews number (MathSciNet)
Zentralblatt MATH identifier
Primary: 60J80: Branching processes (Galton-Watson, birth-and-death, etc.)
Secondary: 92D25: Population dynamics (general)
Jagers, Peter; Klebaner, Fima C. Population-size-dependent, age-structured branching processes linger around. J. Appl. Probab. 48A (2011), 249--260. doi:10.1239/jap/1318940469. https://projecteuclid.org/euclid.jap/1318940469