Author:Johnston, Susan; Butterworth, Doug SDate:May 2018This document reports the 2018 GLMM-standardised Tristan lobster CPUE compared with the current OMP target levels that are in place for each island.Read more
Author:Ross-Gillespie, Andrea; Butterworth, Doug S; Glazer, Jean; Fairweather, TraceyDate:2019Specifications and projection results for the 2018 Operational Management Procedure
used for setting South African hake Total Allowable Catches are provided along with
various background information, including details of the metarule processes.Read more
Author:de Moor, CarrynDate:2018The Operational Management Procedure (OMP) to be used to recommend total allowable catches and bycatches for sardine and anchovy in South African waters has been updated and is detailed hereinRead more
Author:Johnston, Susan; Butterworth, Doug SDate:2019This document details the current 2018 Reference Case Operating Model which is to be proposed to be used for simulation testing of a new OMP for South Coast rock lobster.Read more
Author:Johnston, Susan; Butterworth, Doug SDate:Oct 2018The assessments for the two hypotheses (reduced catchability and a one-off additional mortality event) for the recent reduced Desert Diamond catch rate are updated to take one further year’s data into account. The 2017 CPUE somewhat increased ...Read more
Author:Johnston, Susan; Butterworth, Doug SDate:2019The 2017 assessment of the resource for South Coast rock lobster is updated given the two further years of catch-at-length data and one further year of CPUE data now available. Recruitment is estimated to have decreased over the last two ...Read more
Author:Johnston, Susan; Butterworth, Doug SDate:Nov 2018A new set of 2018 assessments for all five super-areas for the west coast rock lobster resource has recently been completed. These provide the bases for projecting the resource forwards (in each super-area) under alternative future catches ...Read more
Author:Glazer, Jean; Butterworth, DougDate:2020The sole resource is modelled by a dynamic Schaefer production model which allows for a drop in the value of the intrinsic growth rate parameter from 2000 onwards. The model is fit to the available CPUE and survey abundance indices. These ...Read more