Stability in a population model without random deaths by the Verhulst factor
A large amount of population models use the concept of a carrying capacity. Simulated populations are bounded by invoking finite resources through a survival probability, commonly referred to as the Verhulst factor. The fact, however, that resources are not easily accounted for in actual biological systems makes the carrying capacity parameter ill-defined. Henceforth, we deem it essential to consider cases for which the parameter is unnecessary. This work demonstrates the possibility of Verhulst-free steady states using the Penna aging model, with one semelparous birth per adult. Stable populations are obtained by setting a mutation threshold that is higher than the reproduction age.
Year of publication: |
2011
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Authors: | PiƱol, Chrysline Margus N. ; Banzon, Ronald S. |
Published in: |
Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 390.2011, 7, p. 1295-1299
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Publisher: |
Elsevier |
Subject: | Population dynamics | Carrying capacity | Aging | Penna model |
Saved in:
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