Stochastic projections for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

 

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dc.contributor.author Brandão, Anabela
dc.contributor.author Butterworth, Doug
dc.date.accessioned 2019-06-20T10:11:19Z
dc.date.available 2019-06-20T10:11:19Z
dc.date.issued 2018-10
dc.identifier.citation Brandão, A., Butterworth, D. 2018-10. Stochastic projections for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/30231
dc.description.abstract For stochastic future recruitment and for annual catch levels of 0, 200, 400, 575 and 675 tonnes, the median of the spawning biomass estimates for the New Base case model drops initially, but returns to its current level within a decade. However, for variants of this model that attempt to improve the fit to the trotline CPUE or which adjust the projected recruitments to reflect a possible regime shift, only annual catches in the range of 200 to 400 tonnes maintain the spawning biomass above the current level at the end of a 20 year period. This suggests that consideration should perhaps be given to recommending some decrease in the present annual TAC of 575 tonnes. en_US
dc.title Stochastic projections for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity en_US
dc.type Report en_US
dc.publisher.faculty Faculty of Science en_US
dc.publisher.department Department of Mathematics and Applied Mathematics en_US


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