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Research Output

2012

Research Papers and Refereed Articles

Butterworth DS, De Oliveira JAA, and de Moor CL. 2012. Are South African administrative law procedures adequate for the evaluation of issues resting on scientific analyses. The South African Law Journal 129(3): 461–476.
Plagányi ÉE and Butterworth DS. 2012. The Scotia Sea krill fishery and its possible impacts on dependent predators: modelling localized depletion of prey. Ecological Applications 22(3): 748–761.

Unpublished Research/Technical/Policy Documents

http://onlinelibrary.wiley.com/doi/10.1111/faf.12121/full
Brandão, A., Butterworth, D.S., Müller, A. and Best P.B. Application of a photo-identification based assessment model to southern right whales in South African waters. International Whaling Commission document: SC/64/BRG24rev: 1-15.
Brandon, J.R., Scordino, J., Butterworth, D.S., Donovan, G.P. and Punt, A.E. Towards the selection of a final set of trials for the 2012 ENP gray whale implementation review. International Whaling Commission document: SC/64/AWMP11: 1-6.
  de Moor, C.L. Calculation of stock mixing proportions, including correction for "missing alleles": Unpooled results. Adjunct 3 of Annex D: North Pacific Minke Whale Implementation Simulation Trial Specifications pp 31-57. In Report of the second 'First Intersessional Workshop' for the Implementation Review of western North Pacific common minke whales. SC/64/Rep 2.
Müller, A. and Butterworth, D.S. Initial population model fits to the humpback breeding stocks D, E1 and Oceania. International Whaling Commission document: SC/64/SH29: 1-18.

Presentations

Butterworth, D.S. Management procedures and MSE: origins and prospects. 6th World Fisheries Congress, Edinburgh, May 2012: 1-24.
Butterworth, D.S. Could a management procedure approach ease problems in the management of US fisheries? Presentation to NMFSC, Woods Hole, USA 29 June 2012: 1-51.
Butterworth, D.S. and Kraak, S. What is MSE? Keynote debate. 6th World Fisheries Congress, Edinburgh, May 2012: 1-17.
  Coetzee, J. and de Moor, C.L. An Overview of the Key Issues to be Discussed Relating to South African Pelagics. Annual International Stock Assessment Review Workshop, University of Cape Town, South Africa, Nov 2012. 1-25.
  de Moor, C.L. and Butterworth, D.S. Quantifying resource risk for highly variable species in MSE: should pristine biomass provide the yardstick? 6th World Fisheries Congress, Edinburgh, May 2012: 1-19.
  de Moor, C.L. and Butterworth, D.S. Initial results from comparisons between alternative candidate MPs. DAFF SPWG Meeting, 13 November 2012:1-21
  de Moor, C.L. and Butterworth, D.S. Further results towards the choice of Draft OMP-13. DAFF SPWG Meeting, 23 November 2012: 1-27.
  Furman, L.B. and Butterworth, D.S. Using MSE to address problems arising as a result of competing users of the South African horse mackerel resource. 6th World Fisheries Congress, Edinburgh, May 2012: 1-38.
  Geromont, H.F. and Butterworth, D.S. Management procedures (MPs) compared to annual assessments: does use of more data provide better performance? 6th World Fisheries Congress, Edinburgh, May 2012: 1-23.
  Johnston, S.J., Butterworth, D.S. and James, A. Managing the Tristan da Cunha fishery after the oil and soya spill of the bulk carrier OLIVA. 6th World Fisheries Congress, Edinburgh, May 2012: 1-23.
  Sulikowski, J., Morgan, A., Carlson, A., and Butterworth, D.S. Inferences from Atlantic Menhaden aerial surveys. Presentation to US Atlantic States Fishery Management Council's Technical Committee for Menhaden, 25 June 2012.

ICES

Methot, R., Butterworth, D.S., Fernandez, C., Cadrin, S., Dickey-Collas, M., Maguire, J-J., Ye, Y., Restrepo, V., Parma, A. and Smith, T. Report on the classification of stock assessment methods developed by SISAM. ICES strategic Initiative on Stock Assessment methods, ICES CM 2012/ACOM/SCICOM:01: 1-15.
Butterworth, D.S. Some thoughts on the SISAM/WCFSA assessment method evaluation process. Document submitted to the ICES Methods Working Group meeting, Lisbon, October 2012: 1-3.
Butterworth, D.S. Suggested sequential structure for simulation testing of assessment methods. Document submitted to the ICES Methods Working Group meeting, Lisbon, October 2012: 1-3.

Menhaden

Sulikowski, J., Morgan, A., Carlson, A., and Butterworth, D.S. Inferences from aerial surveys on the abundance of Atlantic menhaden from outside the normal fishery range: Implications for improved management of this resource. Paper presented to the US Atlantic States Fishery Management Council's Technical Committee for Menhaden, 25 June 2012: 1-22.
Geromont, H.F. and Butterworth, D.S. Is overfishing of Atlantic Menhaden taking place? Document submitted to the US Atlantic States Marine fisheries Commission.

Gulf of Maine Cod

Butterworth, D.S. and Rademeyer, R.A. An investigation of differences amongst SCAA and ASAP assessment (including reference point) estimates for Gulf of Maine Cod. US North East Fishery Management Council document, January 2012: 1-34.
Butterworth, D.S. 2012. Response to comments by NMFS on reference point estimation for Gulf of Maine cod by Butterworth and Rademeyer. US North East Fishery Management Council document, February 2012: 1-4.
Butterworth, D.S. and Rademeyer, R.A. Applications of statistical catch-at-age assessment methodology to Gulf of Maine cod, October 2012. Document submitted to NEFSC SAW Workshop, October, 2012: 40pp.
Butterworth, D.S. and Rademeyer, R.A. Further statistical catch-at-age assessment results together with biological reference point estimates for Gulf of Maine cod, October 2012. Document submitted to NEFSC SAW Workshop, October, 2012: 49pp.

ICCAT Bluefin Tuna

Butterworth, D.S. and Rademeyer, R.A. A comparison of initial statistical catch-at-age and catch-at-length assessments of Eastern Atlantic Bluefin tuna. Document presented to 2012 ICCAT Bluefin Tuna Special Working Group Stock Assessment Meeting, Madrid, Spain, Sept 4-11: SCRS/2012/137: 1-31

Consultancy and Other Activities Based on Expertise Developed in Research

Brandão, A. and Butterworth, D.S. Analyses of the fisheries independent monitoring survey data of the rock lobster resource of South Africa to include the 2011/12 season. DAFF Brach Fisheries document: FISHERIES/2012/AUG/SWG-WCRL/17: 1-19.
Brandão, A. and Butterworth, D.S. GLM and GLMM standardisation of the commercial abalone CPUE for Zones A-D. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-AB/04: 1-13.
  Brandão, A. and Butterworth, D.S. Trends in policing effort and the number of confiscations for abalone including compliance data until March 2012. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-AB/05: 1-10.
Brandão, A. and Butterworth, D.S. Results for the abalone spatial- and age-structured assessment model for Zones A, B, C and D in 2012. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-AB/06: 1-13.
Brandão, A. and Butterworth, D.S. GLM and GLMM standardisation of the commercial abalone CPUE for Zone F. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-AB/09: 1-7.
Brandão, A. and Butterworth, D.S. Obtaining a standardised CPUE series for toothfish (Dissostichus eleginoides) in the Prince Edward Islands EEZ calibrated to incorporate both longline and trotline data over the period 1997-2012. DAFF Branch Fisheries document: FISHERIES/2012/OCT/SWG-DEM/25: 1-12.
Brandão, A. and Butterworth, D.S. Comparing the current calibrated CPUE series for PEI toothfish to that for last year. DAFF Branch Fisheries document: FISHERIES/2012/OCT/SWG-DEM/26: 1-2.
Butterworth, D.S. Note about constraints on interannual change in TAC for the anchovy fishery, DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-PEL/10: 1-2.
Butterworth, D.S. and Johnston, S.J. Regarding the recreational season length for west coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2012/MAR/SWG-WCRL/05: 1.
  Butterworth, D.S. and Johnston, S.J. Regarding interim relief allocations by area. DAFF Branch Fisheries document: FISHERIES/2012/MAR/SWG-WCRL/06: 1.
  Butterworth, D.S. and Johnston, S.J. MARAM responses to the MRAG review of the MARAM stock assessments of the Tristan rock lobster. Document MARAM/Tristan/2012/JUN/08: 1-3.
Butterworth, D.S. and Johnston, S.J. Recommendations on rock lobster TAC's for the Tristan group of islands for the 2012/13 season. Document MARAM/TRISTAN/2012/JUN/09: 1-7.
Butterworth, D.S. and Johnston, D.S. Recommendations on rock lobster TAC's for the Tristan group of islands for the 2012/13 season. Document MARAM/TRISTAN/2012/AUG/12: 1-11.
Coetzee, J.C. and Butterworth, D.S. Further information provided by the Small Pelagic Working Group in respect of the IFFO FISHERY ASSESSMENT REPORT of anchovy and redeye round herring. DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-PEL/11: 1-6.
de Moor, C.L. and Coetzee, J. Objectives for the management of the South African pelagic fishery for anchovy and sardine, using OMP-13. DAFF Branch Fisheries document: FISHERIES/FEB/2012/SWG-PEL/03rev2: 1-5.
  de Moor, C.L., Coetzee, J. and Butterworth, D.S. Sardine operating model assumptions regarding the November survey. DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-PEL/04: 1-4.
  de Moor, C.L., Coetzee, J.C. and Butterworth, D.S. Follow up to the International Review panel Report for the 2011 International Fisheries Stock Assessment Workshop. DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-PEL/05: 1-5.
  de Moor, C.L. and Butterworth, D.S. A progress report on the revision to the operating model for the South African sardine resource. DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-PEL/07: 1-9.
de Moor, C.L. Were the survey observations of anchovy during 2011 outside the range simulated during OMP-08 development? DAFF Branch Fisheries document: FISHERIES/2012/MAR/SWG-PEL/15: 1-2.
  de Moor, C.L. and Butterworth, D.S. Estimation of the proportion of 1 year old anchovy in the November surveys. DAFF Branch Fisheries document: FISHERIES/2012/APR/SWG-PEL/19: 1-15.
  de Moor, C.L. Potential for increase in the 2012 anchovy normal season TAC. DAFF Branch Fisheries document: FISHERIES/2012/JUN/SWG-PEL/27: 1-2.
  de Moor, C.L., Butterworth, D.S. and Coetzee, J.C. Correction to estimate of 2012 recruitment due to delayed survey start date. DAFF Branch Fisheries document: FISHERIES/2012/JUL/SWG-PEL/30: 1-2.
de Moor, C.L. Final anchovy TAC and sardine TAB for 2012, using OMP-08. DAFF Branch Fisheries document: FISHERIES/2012/JUL/SWG-PEL/31: 1-5.
  de Moor, C.L., Butterworth, D.S. Estimation of the proportion of 1 year old anchovy in the November surveys: further results. DAFF Branch Fisheries document: FISHERIES/2012/JUL/SWG-PEL/32: 1-8.
  de Moor, C.L., Butterworth, D.S. Estimation of the proportion of 1 year old anchovy in the November surveys: final results. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-PEL/40: 1-12.
de Moor, C.L., Coetzee, J., Durholtz, D., Merkle, D, van der Westhuizen, J.J. and Butterworth, D.S. A record of the generation of data used in the 2012 sardine and anchovy assessments. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-PEL/41: 1-29.
  de Moor, C.L., Butterworth, D.S. Assessment of the South African anchovy resource using data from 1984-2011: results at the posterior mode. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-PEL/42: 1-28.
de Moor, C.L., Butterworth, D.S. Finalised assessment of the South African anchovy resource using data from 1984-2011: results at the posterior mode. DAFF Branch Fisheries document: FISHERIES/2012/SEP/SWG-PEL/47: 1-32.
de Moor, C.L., Butterworth, D.S. Assessment of the South African sardine resource using data from 1984-2011, with some results for a single stock hypothesis. DAFF Branch Fisheries document: FISHERIES/2012/SEP/SWG-PEL/48: 1-36.
de Moor, C.L., Butterworth, D.S. Assessment of the South African sardine resource using data from 1984-2011: initial results for a two stock hypothesis. DAFF Branch Fisheries document: FISHERIES/2012/SEP/SWG-PEL/49: 1-19.
de Moor, C.L. A list of the TACs and TABs required as output from OMP-13. DAFF Branch Fisheries document: FISHERIES/2012/SEP/SWG-PEL/50b: 1-8.
  de Moor, C.L., Butterworth, D.S. A first draft of harvest control rules for MP variants to be tested for OMP-13. DAFF Branch Fisheries document: FISHERIES/2012/0CT/SWG-PEL/54: 1-13.
  de Moor, C.L. and Butterworth, D.S. A summary list of the assumptions made in the simulation testing framework used during the development of OMP-13. DAFF Branch Fisheries document: FISHERIES/2012/OCT/SWG-PEL/55: 1-3.
  de Moor, C.L.and Butterworth, D.S. Initial results from MP testing. DAFF Branch Fisheries document: FISHERIES/2012/OCT/SWG-PEL/56: 1-4.
  de Moor, C.L., Butterworth, D.S. and Coetzee, J. A list of what is expected to be completed in time for a choice of "Draft OMP-13". DAFF Branch Fisheries document: FISHERIES/2012/NOV/SWG-PEL/57: 1-7.
de Moor, C.L. and Butterworth, D.S. The simulation testing framework used during the development of OMP-13. DAFF Branch Fisheries document: FISHERIES/2012/NOV/SWG-PEL/58: 1-24.
  de Moor, C.L., Butterworth, D.S. and Robinson, W. Initial results from comparisons between alternative candidate MPs. DAFF Branch Fisheries document: FISHERIES/2012/NOV/SWG-PEL/59: 1-9.
  de Moor, C.L. and Butterworth, D.S. Biomass estimates for use in initial sardine and anchovy TAC/B computations for 2012 should the November 2012 survey not be completed successfully. DAFF Branch Fisheries document: FISHERIES/2012/NOV/SWG-PEL/60: 1-2.
de Moor, C.L. and Butterworth, D.S. Further results towards the selection of "Draft OMP-13". DAFF Branch Fisheries document: FISHERIES/2012/NOV/SWG-PEL/61: 1-17.
de Moor, C.L. and Butterworth, D.S. Interim OMP-13. DAFF Branch Fisheries document: FISHERIES/2012/DEC/SWG-PEL/64: 1-17.
de Moor, C.L. Directed sardine and initial anchovy TACs and TABs for 2013, using interim OMP-13. DAFF Branch Fisheries document: FISHERIES/2012/DEC/SWG-PEL/67: 1-5.
  de Moor, C.L. and Butterworth, D.S. Biomass estimates for use in initial sardine and anchovy TAC/B computations for 2013 should the November 2012 survey not be completed successfully. International Stock Assessment Workshop document: MARAM IWS/NOV12/SURV/PEL/P2: 1-3.
de Moor, C.L., Butterworth, D.S. and Coetzee, J.C. Proposed rules to determine inputs to the OMP should there be no hydro-acoustic survey result in November 2012 or May 2011. International Stock Assessment Workshop document: MARAM IWS/NOV12/SURV/PEL/BG1: 1-2. (Also MCM/2010/SWG-PEL/42.)
  de Moor, C.L. and Butterworth, D.S. OMP-08. International Stock Assessment Workshop document: MARAM IWS/NOV12/SURV/PEL/BG2: 1-16. (Also MCM/2008/SWG-PEL/23.)
  de Moor, C.L. and Butterworth, D.S. An overview of key points pertaining to a no survey scenario for South African sardine and anchovy and MP-related risk calculations. International Stock Assessment Workshop document: MARAM IWS/NOV 12/SURV/PEL/P3: 1-3.
  Furman, L.B. and Butterworth, D.S. On refinements of the approach to setting a horse mackerel PUCL for the pelagic fishery. DAFF Branch Fisheries document: FISHERIES/2012/JUL/SWG-DEMPEL/HMTT/02: 1-4.
  Furman, L.B. and Butterworth, D.S. Preliminary results of an adaptive rule to experimentally increase the allocation for the horse mackerel midwater fishery. DAFF Branch Fisheries document: FISHERIES/2012/JUL/SWG-DEMPEL/HMTT/03: 1-6.
Furman, L.B. and Butterworth, D.S. Proposed catch control rules for horse mackerel bycatch in the small pelagics fishery and directed catch in the midwater trawl fishery. DAFF Branch Fisheries document: FISHERIES/2012/OCT/SWG-DEM/23: 1-33.
Glazer, J.P. and Butterworth, D.S. A Bayesian analysis of the squid resource Loligo reynaudii. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-SQ/23: 1-20.
  Glazer, J.P. and Butterworth, D.S. Results of sensitivity tests applied to the South African squid stock assessment model, including for harvesting strategies with a constant annual catch component for small scale fishers. International Stock Assessment Workshop document: MARAM IWS/NOV12/SQ/P2rev: 1-22.
Johnston, S.J. and Butterworth, D.S. Simulation results for final candidate MPs for the new OMP 2011 for West Coast rock lobster. DAFF Branch Fisheries document: FISHERIES/2012/JAN/SWG-WCRL/01: 1-7.
  Johnston, S.J., Butterworth, D.S., Glazer, J.P. and Brandão, A. OMP 2011 to be used for setting TACs for the West Coast rock lobster fishery for the 2011+ seasons. DAFF Branch Fisheries document: FISHERIES/2012/JAN/SWG-WCRL/02: 1-68.
  Johnston, S.J., Butterworth, D.S., Glazer, J.P. and Brandão, A. Selected key sections from OMP 2011 to be used for setting TACs for the West Coast rock lobster fishery for the 2011+ seasons. DAFF Branch Fisheries document: FISHERIES/2012/JAN/SWG-WCRL/02: 1-11.
  Johnston, S.J. and Butterworth, D.S. Possible modification of OMP 2011 to allow for a lower bound capping of input data. DAFF Branch Fisheries document: FISHERIES/2012/JAN/SWG-WCRL/03: 1-2.
  Johnston, S.J. and Butterworth, D.S. Final simulated model results for OMP 2011 where the new capping rule is incorporated. DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-WCRL/04: 1-3.
  Johnston, S.J. and Butterworth, D.S. Further OMP 2011 simulation results incorporating a transfer of commercial offshore TAC from A7 to A5+6. DAFF Branch Fisheries document: FISHERIES/2012/MAR/SWG-WCRL/08: 1-3.
  Johnston, S.J. and Butterworth, D.S. Final OMP 2011 simulation results incorporating a transfer of 40 MT commercial offshore TAC from A7 to A5+6. DAFF Branch Fisheries document: FISHERIES/2012/JUN/SWG-WCRL/09: 1-2.
Johnston, S.J., Butterworth, D.S., Glazer, J.P. and Brandão, A. OMP 2011 to be used for setting TACs for the west coast rock lobster fishery for the 2011+ seasons. DAFF Branch Fisheries document: FISHERIES/2012/JUL/SWG-WCRL/10: 1-69.
  Johnston, S.J. and Butterworth, D.S. TAC values for 2012/13 season for West coast rock lobster using OMP-2011. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-WCRL/19: 1-9.
  Johnston, S.J. Decisions required for the updated stock assessments for South Coast rock lobster 2012. DAFF Branch Fisheries document: FISHERIES/2012/JAN/SWG-SCRL/04: 1-2.
Johnston, S.J. Progress made on updating the SCRL assessment. DAFF Branch Fisheries document: FISHERIES/2012/APR/SWG-SCRL/10: 1-13.
Johnston, S.J. and Butterworth, D.S. Recommended TAC 2012 for the south coast lobster resource using re-tuned OMP 2010. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-SCRL/13: 1-5.
Johnston, S.J. and Butterworth, D.S. 2012 South coast rock lobster operating models—some initial results. DAFF Branch Fisheries document: FISHERIES/2012/OCT/SWG-SCRL/15: 1-50.
  Johnston, S.J. and Butterworth, D.S. Input data for use in the 2012 south coast rock lobster operating models. International Stock Assessment Workshop document: MARAM IWS/NOV12/SCRL/P1: 1-10.
  Johnston, S.J. and Butterworth, D.S. South coast rock lobster operating models - further results. International Stock Assessment Workshop document: MARAM IWS/NOV12/SCRL/P3: 1-12.
  Johnston, S.J. and Butterworth, D.S. South coast rock lobster operating models - further results. International Stock Assessment Workshop document: MARAM IWS/NOV12/SCRL/WP2: 1-5.
  Johnston, S.J. and Butterworth, D.S. South coast rock lobster operating models - even further results! International Stock Assessment Workshop document: MARAM IWS/NOV12/SCRL/WP3: 1-13.
  Johnston, S.J., Butterworth, D.S. and Glazer, J.P. South coast rock lobster OMP 2008 re-tuned. International Stock Assessment Workshop document: MARAM IWS/NOV12/SCRL/BG1: 1-9.
  Johnston, S.J. and Butterworth, D.S. Times of past Tristan lobster biomass surveys and a rationale for future survey times. Document MARAM/TRISTAN/2012/JAN/01: 1-2.
  Johnston, S.J. and Butterworth, D.S. Initial calculations of potential losses to Tristan fishery due to Oliva effect. Document MARAM/TRISTAN/2012/APR/03: 1-4.
  Johnston, S.J. A summary of the Tristan biomass index survey results to date. Document MARAM/Tristan/2012/MAY/05: 1-7.
  Johnston, S.J. Updated lobster catch-at-length data from the Tristan da Cunha islands. Document MARAM/TRISTAN/2012/MAY/06: 1-6.
Johnston, S.J., Butterworth, D.S., Brandão, A. and Müller, A. Test fishing analyses for Nightingale Island. Document MARAM/Tristan/2012/JUN/02: 1-14.
Johnston, S.J., Brandão, A. and Butterworth, D.S. GLMM- and GLM-standardised lobster CPUE from the Tristan da Cunha group of islands for the 1997-2012 period. Document MARAM/Tristan/2012/Jun/07: 1-17.
Johnston, S.J. and Butterworth, D.S. Updated 2012 rock lobster assessments of the Tristan da Cunha group of islands. Document MARAM/TRISTAN/2012/JUL/10: 1-20.
  Johnston, S.J. and Butterworth, D.S. Input data for the 2012 rock lobster assessments of the Tristan da Cunha group of islands. Document MARAM/TRISTAN/2012/JUL/11: 1-14.
Johnston, S.J. A summary of the Tristan Biomass Index Survey results to date. Document MARAM/Tristan/2012/NOV/13: 1-7.
  Johnston, S.J., Butterworth, D.S. and Brandão, A. Further test fishing analyses for Nightingale Island. Document MARAM/Tristan/2013/NOV/14: 1-16.
  Johnston, S.J. and Butterworth, D.S. Projections of various TAC options at Inaccessible under various scenarios. Document MARAM/Tristan/2012/NOV/15: 1-9.
  Johnston, S.J. and Butterworth, D.S. Projections of various options at Nightingale under various scenarios. Document MARAM/Tristan/2012/NOV/16: 1-4.
  MARAM. Schedules for developing and implementing OMP revisions for major South African fisheries. DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-PEL/2: 1.
  Rademeyer, R.A. Progress on the hake OMP implementation and updated assessment. DAFF Branch Fisheries document: FISHERIES/2012/AUG/SWG-DEM/10: 1.
Rademeyer, R.A. Output from the South African hake OMP-2010 for the 2013 TAC recommendation. DAFF Branch Fisheries document: FISHERIES/2012/SEPT/SWG-DEM/21: 1-4.
Rademeyer, R.A. 2012 Routine update of the South African hake reference case assessment. DAFF Branch Fisheries document: FISHERIES/2012/OCT/SWG-DEM/22: 1-14.
  Rademeyer, R.A. and Butterworth, D.S. Summary of impact of survey estimates on the hake TAC. International Stock Assessment Workshop document: MARAM IWS/NOV12/SURV/HK/P2: 1-5.
  Rademeyer, R.A. and Butterworth, D.S. Addendum to: Summary of impact of survey estimates on the hake TAC. International Stock Assessment Workshop document: MARAM IWS/NOV12/SURV/HK/P2add: 1-2.
  Rademeyer, R.A., Butterworth, D.S. and Plagányi, É.E. A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake resource. International Stock Assessment Workshop document: MARAM IWS/NOV12/SURV/HK/BG1: 1-20. (Also African Journal of Marine Science 2008, 30(2): 291-310.)
  Rademeyer, R.A., Fairweather, T., Glazer, J.P., Leslie, R.L. and Butterworth, D.S. The 2010 Operational Management Procedure for the South African Merluccius paradoxus and M.capensis resources. International Stock Assessment Workshop document: MARAM IWS/NOV12/SURV/HK/BG2: 1-36. (Also FISHERIES/2010/OCTOBER/SWG-DEM/59.)
  Robinson, W. and Butterworth, D.S. Some updates to the penguin-fish interaction model. DAFF Branch Fisheries document: FISHERIES/2012/FEB/SWG-PEL/01: 1-9.
Robinson, W. Modelling the impact of the South African small pelagic fishery on African penguin dynamics. DAFF Branch Fisheries document: FISHERIES/2012/JUL/SWG-PEL/35: 1-44.
Robinson, W. and Butterworth, D.S. Projections of the Robben Island African penguin population. DAFF Branch Fisheries document: FISHERIES/2012/NOV/SWG-PEL/62: 1-6.
Robinson, W. Updating the Dassen Island and Robben Island penguin moult series with data from the 2011/2012 season. DAFF Branch Fisheries document: FISHERIES/2012/SWG-PEL/ICTT/12: 1-8.

Theses

Rademeyer, R.A. The evolution of management procedures for the South African hake resource in the 2000s. PhD Thesis: 1-381.