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Micro-analytical models – virtual population analysis, Thompson & Bell- 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/5268/
 
Title Micro-analytical models – virtual population analysis, Thompson & Bell- Winter School on Towards Ecosystem Based Management of Marine Fisheries – Building Mass Balance Trophic and Simulation Models
 
Creator Srinath, M
 
Subject Analytical models
Population Dynamics
 
Description The most methods currently used in temperate fisheries stock assessments rely on
catch-at-age data an among them virtual population analysis (VPA) or cohort analysis is the
most common method that calculates stock size based on catches with no underlying
statistical assumptions. Virtual population analysis (VPA) calculates past stock
abundances based on past catches. Once stock sizes are calculated, fishing size-selectivity
as well as changes in vulnerability over time can be determined. The stock size estimates,
which include recruitment estimates for each year, can be used for stock and recruitment
analysis. VPA, also known as cohort analysis, is one of the most powerful techniques
available for the analysis of fisheries data and forms the heart of many current assessment
methods where catch-at-age data are available. Virtual population analysis or VPA is
basically an analysis of the catches of commercial fisheries,
 
Publisher CMFRI; Kochi
 
Date 2004
 
Type Teaching Resource
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/5268/1/12.pdf
Srinath, M (2004) Micro-analytical models – virtual population analysis, Thompson & Bell- Winter School on Towards Ecosystem Based Management of Marine Fisheries – Building Mass Balance Trophic and Simulation Models. [Teaching Resource]