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Macro analytical models - surplus production - Winter School on Towards Ecosystem Based Management of Marine Fisheries – Building Mass Balance Trophic and Simulation Models

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Relation http://eprints.cmfri.org.in/5264/
 
Title Macro analytical models - surplus production - Winter School on Towards Ecosystem Based Management of Marine Fisheries – Building Mass Balance Trophic and Simulation Models
 
Creator Sathianandan, T V
 
Subject Analytical models
 
Description Surplus production models are an important approach to the study of harvested
populations’ dynamics. Such models are based on quite simple equations where both the
state of the population and fishing activity are each described by a single variable. These
models take into account only the interrelationship between observable inputs such as
fishing effort and observable output which is the yield obtained from the fishery. In surplus
production models the stock is considered as a single unit of biomass and modeling is not
based on any age structure, length structure or dynamics of the population in terms of
growth and mortalities. Instead, in these models the entire stock, the fishing effort and the
total yield obtained from the stock are studied and a relationship between these are
established without considering any micro level details such as growth, mortality, age at
first capture, mesh size effect etc. The objective here is to obtain optimum levels of effort,
which gives the maximum yield that can be sustained over a long period.
 
Publisher CMFRI; Kochi
 
Date 2004
 
Type Teaching Resource
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/5264/1/10.pdf
Sathianandan, T V (2004) Macro analytical models - surplus production - Winter School on Towards Ecosystem Based Management of Marine Fisheries – Building Mass Balance Trophic and Simulation Models. [Teaching Resource]