Stability in a harvested population with delayed recruitment

It is established that intermediate levels of constant effort harvesting of a population with overlapping generations and a delayed recruitment can destabilize populations that display a sharp peak in their recruitment function. This implies that theremay be some harvested populations that should be...

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Bibliographic Details
Published in:Mathematical biosciences 1978-01, Vol.42 (3), p.187-197
Main Authors: Goh, B.S., Agnew, T.T.
Format: Article
Language:English
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Summary:It is established that intermediate levels of constant effort harvesting of a population with overlapping generations and a delayed recruitment can destabilize populations that display a sharp peak in their recruitment function. This implies that theremay be some harvested populations that should be exploited either very heavily or very lightly, thereby avoiding the unstable regime arising from intermediate levels of harvesting. Instability coupled with environmental buffeting may drive the population to critically low levels or cause uncontrolled oscillations. This behavior may be especially important to consider in some pest populations where applying a chemical agent at intermediate levels may only generate a pest outbreak.
ISSN:0025-5564
1879-3134
DOI:10.1016/0025-5564(78)90095-0