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Optimal harvesting strategies for a metapopulation

✍ Scribed by Geoffrey N. Tuck; Hugh P. Possingham

Publisher
Springer
Year
1994
Tongue
English
Weight
1004 KB
Volume
56
Category
Article
ISSN
1522-9602

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✦ Synopsis

We consider optimal strategies for harvesting a population that is composed of two local populations. The local populations are connected by the dispersal of juveniles, e.g. larvae, and together form a metapopulation. We model the metapopulation dynamics using coupled difference equations_ Dynamic programming is used to determine policies for exploitation that are economically optimal. The metapopulation harvesting theory is applied to a hypothetical fishery and optimal strategies are compared to harvesting strategies that assume the metapopulation is composed either of single unconnected populations or of one well-mixed population. Local populations that have high per capita larval production should be more conservatively harvested than would be predicted using conventional theory. Recognizing the metapopulation structure of a stock and using the appropriate theory can significantly improve economic gains.

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