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International Fisheries Stock Assessment Review Workshop

2013 Workshop

General

MARAM IWS/DEC13/General/1. Schedule
MARAM IWS/DEC13/General/2. Announcement
MARAM IWS/DEC13/General/3. Document list
MARAM IWS/DEC13/General/4. Panel Report (Final)
MARAM IWS/DEC13/General/5. Presentation of the Panel Report.

Hake

Background documents

MARAM IWS/DEC13/Hake/BG1. Rebecca Rademeyer PhD thesis Chapter 8–10.
MARAM IWS/DEC13/Hake/BG2. The application of the species splitting algorithm derived from the observer data to the offshore hake catch and effort data
MARAM IWS/DEC13/Hake/BG3. A further update of the hake species splitting model.
MARAM IWS/DEC13/Hake/BG3add. Addendum - Updated parameter estimates for the hake species split model.
MARAM IWS/DEC13/Hake/BG4. Alternative estimates of the hake species splitting model biased towards observer data.
MARAM IWS/DEC13/Hake/BG5. The effect of no future surveys on projections under the current OMP for the South African hake resource.

Primary papers

MARAM IWS/DEC13/Hake/P1. An update of the catchability calibration factor between the Africana with the old and the new gear, with an attempt to estimate its length-dependence.
MARAM IWS/DEC13/Hake/P2. 2013 update of the South African Hake reference case assessment.
MARAM IWS/DEC13/Hake/P3. Use of commercial vessels for hake surveys, calibration versus gear replication for achieving short term continuity.
MARAM IWS/DEC13/Hake/P4. Evaluating the accuracy of hake abundance index predictions using different smoothing techniques.
MARAM IWS/DEC13/Hake/P5. Summary of 2013 hake assessment to provide Operating Models for testing OMP-2015, and of the existing OMP-2011.
MARAM IWS/DEC13/Hake/P6. List of suggested robustness tests for the revised hake OMP.
MARAM IWS/DEC13/Hake/P7. 2013 update of the reference set of the Operating Models used in testing candidate OMPs for the South African hake resource.
MARAM IWS/DEC13/Hake/P8. The standard trawl gear deployed by the FRS Africana for demersal swept-area surveys.
MARAM IWS/DEC13/Hake/P9. An initial attempt at a spatially structured stock assessment for the South African hake resource, including explicit movement.
MARAM IWS/DEC13/Hake/P10. SA Hake - Key Issues

Working papers

MARAM IWS/DEC13/Hake/WP1. R. Rademeyer. Working Paper: Further work on hake.
MARAM IWS/DEC13/Hake/WP2. R. Rademeyer. Working Paper 2.
MARAM IWS/DEC13/Hake/WP3. S. Somhlaba. Proportions of females and catch at length distributions of the hake long line landings in the west coast.
MARAM IWS/DEC13/Hake/WP4. M. Smith. Review of the discard information from observer data.
MARAM IWS/DEC13/Hake/WP5. R. Rademeyer. Working Paper 5.

Toothfish

Primary papers

MARAM IWS/DEC13/Toothfish/P1. Obtaining a standardised CPUE series for toothfish
MARAM IWS/DEC13/Toothfish/P2. Toothfish assessment

Linefish CPUE standardisation

Primary papers

MARAM IWS/DEC13/Linefish CPUE/P1. Proof of concept for a novel procedure to standardize multispecies catch and effort data.
MARAM IWS/DEC13/Linefish CPUE/P2. Revised performance measures for the simulation testing of the DPC standardization.

BCC ECOFISH

Background documents

MARAM IWS/DEC13/Ecofish/BG1. Compilation of hake data for transboundary analyses
  MARAM IWS/DEC13/Ecofish/BG2. Estimating spatial-temporal dynamics of size-structured populations
MARAM IWS/DEC13/Ecofish/BG3. Impacts of population and fishery spatial structures on fishery stock assessments
MARAM IWS/DEC13/Ecofish/BG4. Ecofish application form Part A
MARAM IWS/DEC13/Ecofish/BG5. Ecofish application form Part B
MARAM IWS/DEC13/Ecofish/BG6. Agreed report of the joint hake research planning workshop (Namibia and South Africa). May 2006.
MARAM IWS/DEC13/Ecofish/BG7. Data from fur seal scats reveal when Namibian Merluccius capensis are hatched and how fast they grow.
MARAM IWS/DEC13/Ecofish/BG8. Transboundary or not? Hake-related findings of R/V Dr Fridtjof Nansen based research, 2002-2011. A summary.

Primary papers

  MARAM IWS/DEC13/Ecofish/P1. Estimation of time-varying selectivity in stock assessments using state-space models. (Submitted to Fisheries Research)
MARAM IWS/DEC13/Ecofish/P2. Evaluation of the status of the Namibian hake resource (Merluccius spp.) using statistical catch-at-age analysis.
MARAM IWS/DEC13/Ecofish/P3rev. Environmental effects on hake catchability in the South African West Coast survey. REVISED
MARAM IWS/DEC13/Ecofish/P4 slides. Ecofish progress and future.
MARAM IWS/DEC13/Ecofish/P5. Ecofish WP1 delivarables.
MARAM IWS/DEC13/Ecofish/P6. Distribution and migration of shallow-water hake (Merluccius capensis) in the Benguela Current Large Marine Ecosystem examined with a geostatistical population model — a preview.
MARAM IWS/DEC13/Ecofish/P7. Distribution and migration of deep-water hake (Merluccius paradoxus) in the Benguela Current Large Marine Ecosystem examined with a geostatistical population model — a preview.
  MARAM IWS/DEC13/Ecofish/P8. Length-frequency analysis and age validation analyses on monthly commercial and annual research survey samples of M. capensis in Namibia confirm fast growth rates and biannual/multiannual otolith zone formation.
MARAM IWS/DEC13/Ecofish/P9. Report on hake genetics.
MARAM IWS/DEC13/Ecofish/P10. Incorporating cannibalism and inter-species predation effects into the hake assessment model: Methods and some preliminary results.
MARAM IWS/DEC13/Ecofish/P11 slide. Gear Intercalibration à la GeoPOP.
MARAM IWS/DEC13/Ecofish/P12. Covering first part of EcoFish Hake Stock Assessment Phase II Workshop.

Sardine

Background documents

MARAM IWS/DEC13/Sardine/BG1. Assessment of the South African sardine resource using data from 1984–2011, with some results for a single stock hypothesis
MARAM IWS/DEC13/Sardine/BG2. The simulation testing framework used during the development of OMP-13
MARAM IWS/DEC13/Sardine/BG3. Proposals to split sardine catch west and east of Cape Agulhas
MARAM IWS/DEC13/Sardine/BG4. Interim OMP-13 v2
MARAM IWS/DEC13/Sardine/BG5. OMP-13: Initial results assuming a two sardine stock hypothesis
MARAM IWS/DEC13/Sardine/BG6. The biological basis for hypothesizing multiple stocks in South African sardine Sardinops sagax (also MARAM IWS/DEC11/P/OMP/P7).
MARAM IWS/DEC13/Sardine/BG7. Shackleton, L.Y. A comparative study of fossil fish scales from three upwelling regions.

Primary papers

MARAM IWS/DEC13/Sardine/P1. Assessment of the South African sardine resource using data from 1984–2011: results for a two stock hypothesis at the posterior mode
MARAM IWS/DEC13/Sardine/P2. An alternative relationship to determine future movement of sardine recruits between the "west" and "south" stocks
MARAM IWS/DEC13/Sardine/P3. Draft two-area Harvest Control Rules for OMP-13
MARAM IWS/DEC13/Sardine/P4. Further results from future projections of a single or two sardine stock operating model, with initial results using a two-area directed sardine TAC.
MARAM IWS/DEC13/Sardine/P5. Summary of sardine documents provided for the MARAM International Stock Assessment Workshop.
MARAM IWS/DEC13/Sardine/P6. Spatial patterns in parasite infection support the multi-stock hypothesis for South African sardine Sardinops sagax.
MARAM IWS/DEC13/Sardine/P7. On the two-stock sardine model.
MARAM IWS/DEC13/Sardine/P8. Sardine Two-Stock Model - Key Issues.
MARAM IWS/DEC13/Sardine/P9. Report back on previous recommendations by the International Review Panel.

Working papers

MARAM IWS/DEC13/Sardine/WP1. C.L. de Moor. Further projections using the environmental movement scneario.
MARAM IWS/DEC13/Sardine/WP2rev. C.L. de Moor. Sardine two-stock assessment excluding survey estimates of recruitment east of Cape Agulhas.
MARAM IWS/DEC13/Sardine/WP3. C.L. de Moor. Sardine two-stock assessment excluding prior on "south" stock recruitment residuals.
MARAM IWS/DEC13/Sardine/WP4. C.L. de Moor. Further projections using the environmental movement scenario and a random movement scenario.

Slides

MARAM IWS/DEC13/Sardine/P1 slides. Sardine two-stock hypothesis: results at the posterior mode
MARAM IWS/DEC13/Sardine/P2 slides. An alternative sardine recruit movement model
MARAM IWS/DEC13/Sardine/P3 slides. Draft two-area Harvest Control Rules for OMP-13 
MARAM IWS/DEC13/Sardine/P4 slides. Initial results using a two-area directed sardine TAC.

Miscellaneous

Primary papers

MARAM IWS/DEC13/Misc/P1 slide show. A comparison between ADMB and TMB
MARAM IWS/DEC13/Misc/P2. Report on progress on recommendations by the international review panel report for the 2012 International Fisheries Stock Assessment Workshop.
MARAM IWS/DEC13/Misc/P3. Points for consideration in discussion of convergence problems encountered in the use of ADMB.