| Brandão A and Butterworth DS. Report back on updates to the assessment model for Zones A to D. DAFF Branch Fisheries document: FISHERIES/2011/FEB/SWG-AB/01: 1–3. |
| Brandão A and Butterworth DS. Trends in policing effort and the number of confiscations for abalone. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-AB/08: 1–13. |
| Brandão A and Butterworth DS. Results for the abalone spatial- and age-structured assessment model for Zones A, B, C and D in 2011. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-AB/11: 1–13. |
| Brandão A and Butterworth DS. Standardised commercial abalone CPUE for Zones A-D over the period 1980–2010. FISHERIES/2011/AUG/SWG-AB/13: 1–10. |
| Brandão A, Johnston SJ, and Butterworth DS. Trends in policing effort and the number of confiscations for West Coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2011/JUN/SWG-WCRL/32: 1–6. |
| Brandão A, Johnston SJ, and Butterworth DS. Trends in policing effort and the number of confiscations for West Coast rock lobster on a super-area basis. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-WCRL/46: 1–18. |
| Brandão A, Johnston SJ, and Butterworth DS. Further trends in policing effort and the number of confiscations for West Coast rock lobster on a Super-area basis. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-WCRL/48: 1–5. |
| Brandão A and Butterworth DS. Updated analyses of the fisheries independent monitoring survey data of the rock lobster resource of South Africa to include the 2010/11 season. DAFF Branch Fisheries document: FISHERIES/2011/SEP/SWG-WCRL/55: 1–19. |
| Brandão A and Butterworth DS. General linear model and general linear mixed model standardisation of the toothfish (Dissostichus eleginoides) CPUE in the Prince Edward Islands vicinity over the period 1997–2010. DAFF Branch Fisheries document: FISHERIES/2011/OCT/SWG-DEM/48: 1–10. |
| Butterworth DS and Geromont HF. Issues that need to be addressed in revision of estimates of bird kills in trawling operations. DAFF Branch Fisheries document: FISHERIES/2011/MAY/SWG-DEM/11: 1. |
| Butterworth DS. WCRL TAC issues requiring finalisation. DAFF Branch Fisheries document: FISHERIES/2011/JUL/SWG-WCRL/35: 1–5. |
| Butterworth DS, Gaylard J, Brandão A, and Johnston SJ. Report of the task group to advise on appropriate options to be considered for recent changes in poaching levels for West Coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-WCRL/50: 1–5. |
| Butterworth DS and Johnston SJ. Recommendations on rock lobster TAC's for the Tristan group of islands for the 2011/12 season. Document MARAM/Tristan/2011/20: 1–9. |
| Butterworth DS and Johnston SJ. Recommendations on adjustments of 2011/12 catch limits at Inaccessible and Nightingale islands in response to the impacts of spills of oil and soya as a result of the Oliva incident. Document MARAM/Tristan/2011/Sep/12: 1–2. |
| Butterworth DS and Johnston SJ. Recommendations on adjustments of 2011/12 catch limits at Inaccessible and Nightingale islands in response to the impacts of spills of oil and soya as a result of the Oliva incident. (Modified version of Sep/12.) Document MARAM/Tristan/2011/Sep/14: 1. |
| Butterworth DS and Johnston SJ. Suggestions arising from: Recommendations on adjustments of 2011/12 catch limits at Inaccessible and Nightingale islands in response to the impacts of spills of oil and soya as a result of the Oliva incident. (Modified version of Sep/12.) Document MARAM/Tristan/2011/Sep/15: 1. |
| Butterworth DS, de Moor CL, Robinson W, and Coetzee J. Collated comments from some members of the Small Pelagic Scientific Working group in response to FISHERIES/2011/SWG-PEL/29. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/34: 1–8. |
| Butterworth DS, de Moor CL, and Coetzee J. Collated comments from some members of the SWG-PEL in response to FISHERIES/2011/SWG-PEL/30. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/36: 1–2. |
| Butterworth DS, de Moor CL, van der Lingen CD, and Coetzee JC. MSC Contributor Form — PWG response to MSC documents published for public consultation and MSC Comment Form — 2011 consultation on Assessment of Low Trophic Level Fisheries (LTLF). Department of Agriculture, Forestry and Fisheries: Branch Fisheries document FISHERIES/2011/SWG-PEL/37. |
| Butterworth DS, de Moor CL, Coetzee JC, Twatwa NM, Shabangu FW, van der Lingen C, Phillips M, van der Westhuizen JJ, Somhlaba S, de Goede J, Geja Y, Bali A, and Durholtz D. Further comments to the MSC. Department of Agriculture, Forestry and Fisheries: Branch Fisheries Document FISHERIES/2011/SWG-PEL/48. 1–5. |
| de Moor CL, van der Westhuizen JJ, Durholtz D, and Coetzee J. A record of the generation of data used in the 2011 sardine and anchovy assessments. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/04: 1–27. |
| de Moor CL and Butterworth DS. Assessment of the South African sardine resource using data from 1984–2010: initial results of an age-structured model. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/05: 1–16. |
| de Moor CL and Butterworth DS. Assessment of the South African anchovy resource using data from 1984–2010: initial results. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/06: 1–11. |
| de Moor CL and Butterworth DS. Assessment of the South African anchovy resource using data from 1984–2010: variability in natural mortality. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/22: 1–14. |
| de Moor CL, van der Westhuizen JJ, Coetzee J, and Butterworth DS. A record of the generation of sardine catch data. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/23: 1–7. |
| de Moor CL and Butterworth DS. Comparison of sardine November proportion-at-age from different length frequencies and age readers. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/39: 1–3. |
| de Moor CL and Butterworth DS. Extrapolation of recruit numbers to Cape Infanta in the years for which the survey only reached Cape Agulhas. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/42: 1–3. |
| de Moor CL. Final anchovy TAC and sardine TAB for 2011, using OPM-08. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/43: 1–5. |
| de Moor CL and Butterworth DS. Assessment of the South African sardine resource using data from 1984–2010: further results of a single stock hypothesis. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/44: 1–34. |
| de Moor CL and Butterworth DS. Current (OMP-08) yield drop expectations relative to revised MSC target reference points for low trophic level species. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/50: 1. |
| de Moor CL, Coetzee J, Durholtz D, Merkle D, and van der Westhuizen JJ. A final record of the generation of data used in the 2011 sardine and anchovy assessments. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/51: 1–31. |
| de Moor CL and Butterworth DS. Assessment of the South African anchovy resource using data from 1984–2010: results at the posterior mode. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/52: 1–26. |
| de Moor CL and Butterworth DS. Assessment of the South African anchovy resource using data from 1984–2010: results at the posterior mode. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/66: 1–29. |
| de Moor CL and Butterworth DS. Assessment of the South African sardine resource using data from 1984–2010: further work towards a base case single stock hypothesis. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/67: 1–31. |
| de Moor CL and Butterworth DS. Assessment of the South African sardine resource using data from 1984–2010: initial results for a two stock hypothesis. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/68: 1–26. |
| de Moor CL and Moseley C. Comments on FISHERIES/2011/SWG-PEL/62: Spatial management needed in Small pelagic fishery. Department of Agriculture, Forestry and fisheries: Branch Fisheries Document: FISHERIES/2011/SWG-PEL/69: 1–3. |
| de Moor CL and Butterworth DS. Assessment of the South African anchovy resource using data from 1984–2010: posterior distributions for the two base case hypotheses. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/75: 1–9. |
| de Moor CL, Butterworth DS, and Coetzee J. List of alternatives to be tested during the development of OMP-12. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/76: 1–6. |
| de Moor CL, Butterworth DS, and Coetzee J. List of alternatives to be tested during the development of OMP-13. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/76b: 1–6. |
| de Moor CL. A list of the TACs and TABs required as output from OMP-12. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/77: 1–7. |
| de Moor CL and Butterworth DS. Tasks related to the revision of the pelagic OMP to be completed in time for the International Stock Assessment Workshop. Branch Fisheries document: FISHERIES/2011/SWG-PEL/79: 1–2. |
| de Moor CL and Butterworth DS. OMP-13 development: Performance statistics and key specifications for projections. Branch Fisheries document: FISHERIES/2011/SWG-PEL/85: 1–8. (Revised version in MARAM IWS/DEC11/P/OMP/P6) |
| de Moor CL. Directed sardine and initial anchovy TACs and sardine TAB for 2012, using OMP-08. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/93: 1–3. |
| Furman LB and Butterworth DS. A preliminary evaluation of the potential use of pelagic survey data in setting the horse mackerel PUCL. DAFF Branch Fisheries document: FISHERIES/2011/MAY/SWG-DEM/16: 1–21. |
| Furman LB. Preliminary results from a GLM standardised CPUE series for the South Coast midwater horse mackerel fishery. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-DEM/41: 1–8. |
| Furman LB and Butterworth DS. Updated assessments and projections under alternative future catch levels for the horse mackerel resource. DAFF Branch Fisheries document: FISHERIES/2011/OCT/SWG-DEM/49: 1–32. |
| Furman LB. Progress on re-assessment of horse mackerel PUCL. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/19: 1. |
| Furman LB and Butterworth DS. Sensitivity of horse mackerel assessments to catch uncertainties. Branch Fisheries document: FISHERIES/2011/SWG-DEM&PEL/HMTT/10: 1–4. |
| Geromont HF and Butterworth DS. Preliminary assessment of the western and south-western Cape Carpenter resource using an age-structured production model. DAFF Branch Fisheries document: FISHERIES/2011/JUNE/LS–WG/4: 1–38. |
| Glazer JP and Butterworth DS. The inclusion of sub-areas in the standardisation of the Area 8 trapboat CPUE data through the application of a generalised linear mixed model. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/03: 1–11. |
| Glazer JP and Butterworth DS. Updated GLM analyses of Area 8+. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/04: 1–10. |
| Glazer JP and Butterworth DS. The application of a generalized linear mixed model to the Area 8+ trapboat data. DAFF Branch Fisheries document: FISHERIES/2011/APR/SWG-WCRL/19: 1–9. |
| Glazer JP and Butterworth DS. The application of a generalized linear mixed model to the Area 8 bakkie data. DAFF Branch Fisheries document: FISHERIES/2011/APR/SWG-WCRL/20: 1–8. |
| Glazer JP and Butterworth DS. An updated assessment of the South African monkfish resource, Lophius vomerinus. DAFF Branch Fisheries document: FISHERIES/2011/OCT/SWG-DEM/46: 1–11. |
| Johnston SJ, Butterworth DS, and Glazer JP. South Coast rock lobster OMP 2008 re-tuned. DAFF Branch Fisheries document: FISHERIES/2011/FEB/SWG-SCRL/01: 1–9. |
| Johnston SJ and Butterworth DS. Recommended TAC 2011 for the South Coast rock lobster resource using re-tuned OMP 2010. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-SCRL/06: 1–5. |
| Johnston SJ and Butterworth DS. Notes on the development of the new 2011 Area-disaggregation OMP for West Coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/01: 1–19. |
| Johnston SJ and Butterworth DS. Super-areal split of catches from each of the different sectors for the last four seasons of the West Coast rock lobster fishery. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/06: 1–3. |
| Johnston SJ. Task Group report on West Coast rock lobster interim relief. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/07: 1. |
| Johnston SJ. On possible flexibility for interim relief allocations amongst super-areas for the 2010/2011 season. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/08: 1–6. |
| Johnston SJ. Estimate of interim relief take for the 2010/2011 season. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/09: 1. |
| Johnston SJ and Butterworth DS. Biological issues relating to projections of the West Coast rock lobster resource into the future for OMP trials. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/11: 1–9. |
| Johnston SJ and Butterworth DS. West Coast rock lobster catch-at-length sample sizes. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/12: 1–6. |
| Johnston SJ and Butterworth DS. Updated West Coast rock lobster operating models. DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/13: 1–27. |
| Johnston SJ and Butterworth DS. Further updated West Coast rock lobster operating models for super-areas A1+2 and A8+. DAFF Branch Fisheries document: FISHERIES/2011/APR/SWG-WCRL/17: 1–15. |
| Johnston SJ and van Zyl D. A summary of West Coast rock lobster poaching records. DAFF Branch Fisheries document: FISHERIES/2011/APR/SWG-WCRL/18: 1–13. |
| Johnston SJ. Super-area breakdown of West Coast rock lobster confiscations and policing records. DAFF Branch Fisheries document: FISHERIES/2011/MAY/SWG-WCRL/23: 1–18. |
| Johnston SJ and Butterworth DS. On specifications for OMP-2011 and associated trials. DAFF Branch Fisheries document: FISHERIES/2011/MAY/SWG-WCRL/24: 1–12. |
| Johnston SJ and Butterworth DS. Information required for completion of OMP 2011. DAFF Branch Fisheries document: FISHERIES/2011/JUN/SWG-WCRL/28: 1–2. |
| Johnston SJ. Some references relating to the previous choice of a 500 MT poaching level and the perception that poaching levels are "high". DAFF Branch Fisheries document: FISHERIES/2011/JUN/SWG-WCRL/29: 1. |
| Johnston SJ and Butterworth DS. Comparison of initial 2011 OMP results for two alternate poaching scenarios. DAFF Branch Fisheries document: FISHERIES/2011/JUN/SWG-WCRL/31: 1–5. |
| Johnston SJ and van Zyl D. Interim relief catch estimate for the 2010/2011 season. DAFF Branch Fisheries document: FISHERIES/2011/JUN/SWG-WCRL/33: 1–3. |
| Johnston SJ and Butterworth DS. Summary of projections of the West Coast rock lobster resource. DAFF Branch Fisheries document: FISHERIES/2011/JUL/SWG/WCRL/34: 1. |
| Johnston SJ. Assumptions made when working with confiscations/policing effort data. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-WCRL/40: 1–2. |
| Johnston SJ and Butterworth DS. Preliminary alternate recovery target results for alternate future poaching scenarios based on different tunings of the current OMP. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-WCRL/47: 1–8. |
| Johnston SJ and Butterworth DS. Further preliminary alternate recovery target results for alternate future poaching scenarios based on different tunings of the current OMP. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-WCRL/49: 1–8. |
| Johnston SJ and Butterworth DS. 2011 Addendum: Further preliminary alternate recovery target results for alternate future poaching scenarios based on different tunings of the current OMP. Explanation of subsistence/IR allocation. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-WCRL/49 Add: 1. |
| Johnston SJ and Butterworth DS. A new OMP for West Coast rock lobster: preliminary results. DAFF Branch Fisheries document: FISHERIES/2011/SEP/SWG-WCRL/56: 1–14. |
| Johnston SJ and Butterworth DS. Results for alternate candidate OMPs for the new OMP 2011 for West Coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2011/OCT/SWG-WCRL/57: 121. |
| Johnston SJ and Butterworth DS. Addendum: Results for alternate candidate OMPs for the new OMP 2011 for West Coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2011/OCT/SWG-WCRL/57–addendum: 1–2. |
| Johnston SJ and Butterworth DS. Results for final set of candidate OMPs for the new OMP 2011 for West Coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2011/OCT/SWG-WCRL/58: 1–17. |
| Johnston SJ and Butterworth DS. TAC values for 2011/12 season for four candidate OMPs for the West Coast rock lobster resource. DAFF Branch Fisheries document: FISHERIES/2011/OCT/SWG-WCRL/59: 1–5. |
| Johnston SJ and Butterworth DS. Simulation results for final candidate MPs for the new OMP 2011 for West Coast rock lobster. DAFF Branch fisheries document: FISHERIES/2011/DEC/SWG-WCRL/60: 1–7. |
| Johnston SJ. Data available for input to an age structured production model of the Tristan lobster fishery. Document MARAM/Tristan/2011/Feb/01: 1–14. |
| Johnston SJ and Butterworth DS. The age-structured production modelling approach for assessment of the rock lobster resources at the Tristan da Cunha group of islands. Document MARAM/Tristan/2011/Feb/02: 1–9. |
| Johnston SJ. Operating model results for inaccessible islands using an age-structured production model approach. Document MARAM/Tristan/2011/Feb/03: 1–9. |
| Johnston SJ. Updated catch length frequencies for the Tristan group of islands using factory pack category data. Document MARAM/Tristan/2011/Mar/04: 1–16. |
| Johnston SJ. Operating model results for Nightingale island using an age-structured production model approach. Document MARAM/Tristan/2011/Mar/05: 1–12. |
| Johnston SJ. Updated operating model results for Inaccessible islands using an age-structured production model approach. Document MARAM/Tristan/2011/April/07: 1–14. |
| Johnston SJ and Butterworth DS. Updates to the 2011 Tristan da Cunha group of islands assessment models and final assessment results. MARAM/Tristan/2011/Jun/08: 1–19. |
| Johnston SJ. Summary of growth rate data and analyses available for the Tristan da Cunha group of islands. MARAM/Tristan/2011/Jun/09: 1–8. |
| Johnston SJ and Butterworth DS. Summary of suggested baseline options for rock lobster TAC recommendations for the Tristan da Cunha group of islands (i.e. had no oil spill event occurred in 2011). MARAM/Tristan/2011/Jun/10: 1–7. |
| Johnston SJ and Butterworth DS. Effect of the 2011 oil and soya spill events on rock lobster yields at Inaccessible and Nightingale islands. Document MARAM/Tristan/2011/Sep/11: 1–38. |
| Johnston SJ and Butterworth DS. Effect of the 2011 oil and soya spill events on rock lobster yields at Inaccessible and Nightingale islands. Document MARAM/Tristan/2011/Sep/13: 1–35 |
| Johnston SJ. A summary of the Tristan biomass index survey results to date. MARAM/Tristan/2011/Nov/16: 1–5. |
| Johnston SJ. Test fishing at Nightingale. MARAM/Tristan/2011/Nov/17: 1–7. |
| Johnston SJ. Test fishing at Inaccessible. MARAM/Tristan/2011/Nov/18: 1–6. |
| Johnston SJ and Butterworth DS. The age-structured production modelling approach for assessment of the rock lobster resources at the Tristan da Cunha group of islands. MARAM/Tristan/2011/Dec/19: 1–12. |
| Maharaj G and Butterworth DS. Summary of estimates of recent trends in abalone poaching. DAFF Branch Fisheries document: FISHERIES/2011/JUL/TG AB/13: 1–6. |
| Rademeyer RA. OMP-2010 outputs for 2012 TAC computations for a range of 2010 CPUE values. DAFF Branch Fisheries document: FISHERIES/2011/JUL/SWG-DEM/28: 1–2. |
| Rademeyer RA. 2011 Routine update of the South African hake base reference case assessment. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-DEM/39: 1–7. |
| Rademeyer RA. Output from the South African hake OMP-2010 for the 2012 TAC recommendation. DAFF Branch Fisheries document: FISHERIES/2011/AUG/SWG-DEM/40: 1–4. |
| Robinson W and Butterworth DS. Update of penguin model development. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/01: 1–4. |
| Robinson W and Butterworth DS. Proposed timing approach to penguin tag-recapture data. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/02: 1–4. |
| Robinson W and Butterworth DS. Robben Island penguin model extended to include further tag data and to estimate immigration. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/32: 1–6. |
| Robinson W and Butterworth DS. Full description of the Robben Island penguin–fish interaction model and base case Bayesian results. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/40: 1–19. |
| Robinson W and Butterworth DS. Penguin model update: an improved penguin mortality relationship with sardine biomass and results of sensitivities to the base case. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/58: 1–15. |
| Robinson W and Butterworth DS. Results of an alternative pelagic biomass series for the relationship with penguin adult survival. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/70: 1–3. |
| Robinson W. Update to the Robben Island moult count series for 2011. DAFF Branch Fisheries document: FISHERIES/2011/SWG-PEL/71: 1–4. |
| Van Zyl D and Johnston SJ. Interim relief phase 1 (2006/2007 season). DAFF Branch Fisheries document: FISHERIES/2011/MAR/SWG-WCRL/05: 1–2. |