Impact of maximum sustainable yield on independent populations

We investigate a community of independent logistically growing populations under a common harvesting effort which leads to the total maximum sustainable yield (TMSY). It is surprising that in the case of two populations with approximately equal carrying capacities, TMSY is reached while both populat...

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Bibliographic Details
Published in:Ecological modelling 2010-08, Vol.221 (17), p.2108-2111
Main Authors: LEGOVIC, Tarzan, GECEK, Sunčana
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
Communities
Ecosystem
Ecosystems
Extinction
Fishing
Fundamental and applied biological sciences. Psychology
General aspects
General aspects. Techniques
Harvesting
Harvesting effort
Logistic populations
Maximum sustainable yield
Methods and techniques (sampling, tagging, trapping, modelling...)
Overfishing
Populations
Rest
Synecology
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Summary:We investigate a community of independent logistically growing populations under a common harvesting effort which leads to the total maximum sustainable yield (TMSY). It is surprising that in the case of two populations with approximately equal carrying capacities, TMSY is reached while both populations persist, although their biotic potential may differ substantially. In general, however, TMSY with a common harvesting effort implies suboptimal fishing of some populations, overfishing of others and extinction of the rest of the populations. Since extinction of populations is a rule rather than an exception and since a community of independent populations is more robust than an ecosystem with multiple trophic levels, we call for urgent retraction of all legal documents advocating MSY in ecosystems.
ISSN:0304-3800
1872-7026
DOI:10.1016/j.ecolmodel.2010.05.015