Updated squid assessment results

 

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dc.contributor.author Glazer, Jean Patricia
dc.contributor.author Butterworth, Doug S
dc.date.accessioned 2016-04-05T10:27:35Z
dc.date.available 2016-04-05T10:27:35Z
dc.date.issued 2013
dc.identifier.citation Glazer, J. P., & Butterworth, D. S. (2013). Updated squid assessment results. FISHERIES/2013/AUG/SWG-SQ/49 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/18574
dc.description.abstract Glazer & Butterworth (2013) reports progress on refinements to the squid stock assessment model focusing particularly on replacing the discrete Pope catch equations with differentiable Baranov catch equations as recommended by the Panel of the International Stock Assessment Workshop held at UCT in December 2012. A comparison of key parameter estimates as per the Pope and Baranov models (utilizing data to 2011) indicated that although initial recruitment, and hence biomass, is estimated to be somewhat higher for the Baranov model (driven mainly by the lower estimate of h in that model), the ratio of current stock status relative to pristine (��2012 ∗ ��1971 ∗ ) was at a similar level for both models. This paper reports further results to those in Glazer & Butterworth (2013): • A comparison of risk statistics for the Pope and Baranov models where each model was projected 5000 times into the future from their joint posterior mode values • Updated joint posterior mode parameter estimates for the Baranov model including data to 2012 en_ZA
dc.language eng en_ZA
dc.subject.other squid
dc.subject.other assessment results
dc.title Updated squid assessment results en_ZA
dc.type Working Paper en_ZA
dc.date.updated 2016-04-05T10:26:44Z
uct.type.publication Research en_ZA
uct.type.resource Research paper en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Marine Resource Assessment and Management Group en_ZA
uct.type.filetype Text


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