MSY from catch and resilience

Ole A Jørgensen, Anna Chrysafi

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Abstract

A simple Schaefer model was tested on the Greenland halibut stock offshore in NAFO SA 0 and 1. The minimum data required for this model is a catch time series and a measure of the resilience of the species. Other input parameters that had to be guessed were the carrying capacity, the biomass as a fraction of the carrying capacity at both the beginning and end of the time series, and the growth rate. MSY was estimated to be between 19 000 and 23 000 t. Sensitivity tests showed that the estimation of MSY was heavily dependent on the guess of especially the biomass at the end of the time series and the growth rate.
The model assumptions and limitations were discussed
Original languageEnglish
Publication date2014
Number of pages29
Publication statusPublished - 2014
Event33rd Scientific Council Research Meeting NAFO - Nova Scotia, Canada
Duration: 19 Sep 201123 Sep 2011

Conference

Conference33rd Scientific Council Research Meeting NAFO
Country/TerritoryCanada
CityNova Scotia
Period19/09/201123/09/2011

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