Assessing the South African sardine resource: two stocks rather than one? [PDF]
, 2022 Presentation to the SANCOR seminar, Oceanography department, University of Cape Town, 9 July, 2015. 38pp, titled: "Assessing the South African sardine resource: two stocks rather than one?"
Carryn de Moor (9998876)
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The acceptable level of risk for the South African sardine resource. [PDF]
, 2019 An acceptable maximum level of risk for the South African sardine resource has been calculated by comparing the depletion of the effective west component spawner biomass from the recent Operating Model being used to develop OMP-18 with the total spawner biomass from previous Operating Models used to develop earlier OMPs. This results in a risk level of
de Moor, Carryn
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Final baseline assessment of the South African sardine resource using data from 1984‐2018 [PDF]
, 2020 The quantitative assessment of the South African sardine resource, using data from 1984 to 2018 has been finalised. This two mixing‐component model assumed no stock recruitment relationship during conditioning. The west component abundance was estimated to be about 12% of the historical (1984‐2018) average, with a biomass of 51 thousand tons in ...
de Moor, Carryn
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Progress towards updating the assessment of the South African sardine resource using data from 1984-2018. [PDF]
, 2019 Results are given for the current baseline assessment of the South African sardine resource, using data from 1984 to 2018. Some model assumptions are still under investigation and therefore this is not the finalised assessment.
de Moor, Carryn
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A summary of the South African sardine resource and fishery
2021Presentation to the International Stock Assessment Workshop, University of Cape Town, 2-6 December 2019. 18pp, titled: 'A summary of the South African sardine resource and fishery'
de Moor, Carryn, Coetzee, Janet
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‘Red flag’ proposals to be linked to implicit spatial management of the South African sardine resource [PDF]
, 2018 The new OMP for South African sardine is being developed assuming implicit spatial management, subject to opt out in some way if ‘red flags’ are raised. Implicit spatial management assumes the distribution of future directed sardine catches east and west of Cape Agulhas will be spread according to past behaviour.
de Moor, Carryn
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Revision to the Initial Assessment of the South African sardine resource using data from 1984-2018. [PDF]
, 2019 This document presents a revision to the two mixing component assessment of South African sardine by de Moor (2019). This assessment remains an “initial assessment” with results expected to be sufficiently accurate such that they can reliably form the basis of simple constant catch projections for short-term management decisions.
de Moor, Carryn
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Assessment of the South African sardine resource using data from 1984-2015: Results at the joint posterior mode for the two mixing-stock hypothesis. [PDF]
, 2016 The 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 “tetracotyle”-type metacercarian parasite, and includes data on this parasite prevalence-by-length in the likelihood.
de Moor, C L, Butterworth, Doug S
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The acceptable level of risk for the South African sardine resource
2021Presentation to the Small Pelagic Scientific Working Group, Cape Town, 7 August 2019 titled: 'The acceptable level of risk for the South African sardine resource'.
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Assessment of the South African sardine resource using data from 1984-2018: Initial results at the joint posterior mode for the two mixing-component hypothesis. [PDF]
, 2019 The assessment of the South African sardine resource is in the process of being revised and updated using data available up to November 2018. While some data are yet to be finalised and robustness to some key model assumptions is still to be considered, the initial results presented here are expected to be sufficiently accurate such that they can ...
de Moor, Carryn
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