Deterministic and Stochastic Effects in Population Dynamics

[+] Author and Article Information
G. F. Oster

Dept. of Entomology and Parasitology, University of California, Berkeley, Calif.

D. M. Auslander

Dept. of Mechanical Engineering, University of California, Berkeley, Calif.

T. T. Allen

Group of Biophysics, University of California, Berkeley, Calif.

J. Dyn. Sys., Meas., Control 98(1), 44-48 (Mar 01, 1976) (5 pages) doi:10.1115/1.3426983 History: Received August 04, 1975; Online July 13, 2010


An age-structured model based on an extension of the equations for convective flow is constructed and tested for laboratory populations of sheep blowflies. The model is shown to be capable of reproducing major frequency components in the data not hitherto predicted by deterministic models. Through the introduction of stochastic mortality and fecundity, the effects of individual variation are taken into account, thus extending the model’s validity to very low population levels.

Copyright © 1976 by ASME
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