Author:Coetzee, J C; de Moor, C L; Butterworth, Doug SDate:2019The sardine fishery is an important component of the South African purse-seine fishery, the largest commercial fishery in South Africa (by landed mass). This fishery, initially established on the West Coast, but with some subsequent infrastructure ...Read more
Author:de Moor, C LDate:Jun 2017This document details the method agreed at the Small Pelagic Scientific Working Group meeting on 27th June 2017 to be used to inform the maximum directed >14cm sardine catch to be recommended to be caught west of Cape Agulhas during 2017. The ...Read more
Author:de Moor, C L; Butterworth, Doug SDate:2015Sardine Sardinops sagax distributed off the west and south coasts of South Africa have traditionally been assumed to comprise a single well-mixed stock for assessment and management purposes. New research, however, lends weight to the possibility ...Read more
Author:de Moor, C L; Butterworth, Doug SDate:Jul 2016The assessment of the South African sardine resource has been revised and updated using data available up to November 2015. Two primary hypotheses regarding the sardine stock structure have been agreed for investigation. The first considers ...Read morecb
Author:de Moor, C L; Butterworth, Doug SDate:Jul 2016The Operating Model (OM) for the South African sardine resource has been updated from that used to develop OMP-14 given four more years of data. The model has been altered from previous assessments to now model infection of sardine by a ...Read more
Author:de Moor, C L; Butterworth, Doug S; Coetzee, J CDate:Sep 2016The simulation projection framework to be used to test Candidate Management Procedures for OMP-17 is yet to be developed (cf de Moor and Butterworth (2013a) for the framework used when developing OMP-14). However, given experience gained ...Read more
Author:de Moor, C LDate:Jun 2017The maximum directed >14cm sardine catch recommended to be caught west of Cape Agulhas during 2017 was initially set at 21 400t (DAFF 2016) based on the method set out in de Moor and Butterworth (2016). The mid-year revision in the South ...Read more
Author:de Moor, C L; Butterworth, Doug SDate:Dec 2016Butterworth (2016) outlined a draft process for setting the initial directed >14cm sardine TAC for 2017. This document expands on the detail of that draft process, with some changes/updates. Further, it provides initial projections from ...Read more
Author:Coetzee, J C; Merkle, D; de Moor, C L; Twatwa, N M; Barange, M; Butterworth, Doug SDate:2008The biomass of small pelagic fish species off the coast of South Africa has been monitored since 1984 using hydro-acoustic survey techniques. These time-series of spawner biomass and recruitment estimates form the basis for management of both ...Read more
Author:de Moor, C LDate:Nov 2016The two mixing stock hypotheses for South African sardine presented in de Moor and Butterworth (2016) and de Moor (2016) assumed a Hockey-Stick stock-recruit relationship, with the stock-recruit parameters estimated to differ by “effective ...Read more