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Research Output

2006

Research Papers and Refereed Articles

Branch TA. Discards and revenues in multispecies groundfish trawl fisheries managed by trip limits on the U.S. West Coast and by ITQs in British Columbia. Bulletin of Marine Science 78(3): 669–689.
Branch TA, Hilborn R, Haynie AC, Fay G, Flynn L, Griffiths J, Marshall KN, Randall JK, Scheuerell JM, Ward EJ, and Young M. Fleet dynamics and behavior: lessons for fisheries management. Canadian Journal of Fisheries and Aquatic Sciences 63: 1647–1668.
Branch TA, Rutherford K, and Hilborn R. Replacing trip limits with individual transferable quotas: implications for discarding. Marine Policy 30: 281–292.
Glazer JP and Butterworth DS. Some refinements of the assessment of the South African squid resource, Loligo vulgaris reynaudii. Fisheries Research 78: 14–25.
Mori M and Butterworth DS. A first step towards modeling the krill–predator dynamics of the Antarctic ecosystem. CCAMLR Science 13: 217–277.
Underhill LG, Serra L, and Brandão A. Progress with the statistical analysis of primary molt. Acta Zoologica Sinica 52(Supp.): 440–443.

Peer reviewed published conference proceedings

  Butterworth, D.S. Why fisheries reference points miss the point. Proceedings of the 4th World Fisheries Congress: Reconciling Fisheries with Conservation, Vancouver, Canada, 2004, American Fisheries Society: 587–594.
  Plagányi, É.E. and Butterworth, D.S. Competition between marine mammals and fisheries—can we successfully model this using ECOPATH with ECOSIM? Proceedings of the 4th World Fisheries Congress: Reconciling Fisheries with Conservation, Vancouver, Canada, 2004: 587–601.
  Plagányi, É.E. and Butterworth, D.S. Does classic stock assessment have a role in a failed case of reconciliation of fisheries with conservation? Proceedings of the 4th World Fisheries Congress: Reconciling Fisheries with Conservation, Vancouver, Canada, 2004: 603–621.

Non-peer reviewed published conference proceedings

  Brandão, A. and Butterworth, D.S. Description of the age-structured production model (ASPM) assessment methodology used for the Namibian orange roughy (Hoplostethus atlanticus) and the South African Prince Edward Islands Patagonian toothfish (Dissostichus eleginoides). In R. Shotton (Ed), Deep Sea 2003: Conference on the Governance and Management of Deep-sea Fisheries. Queenstown, New Zealand, 1-5 December 2003. FAO Fisheries Proceedings. No. 3/2. Rome, FAO. 2005. Proceedings of the Deep Sea conference: 198-207.
  Butterworth, D.S. and Brandão, A. Experiences in Southern Africa in the management of deep-sea fisheries. In R. Shotton (Ed), Deep Sea 2003: Conference on the Governance and Management of Deep-sea Fisheries. Queenstown, New Zealand, 1-5 December 2003. FAO Fisheries Proceedings. No. 3/1. Rome, FAO. 2005. Proceedings of the Deep Sea conference: 226-234.

University Publications and Works of a Popular Nature

  Plagányi, É. Lobsters loom large in the line-up: 5-days at the MCM/NRF/Industry SA rock lobster international stock assembly workshop. SANCOR Newsletter No. 182: 8-9.

Unpublished Research/Technical/Policy Documents

  Branch, T.A. (compiler). Possible reasons for the appreciable decrease in abundance estimates for Antarctic minke whales from the IDCR/SOWER surveys between the second and third circumpolar sets of cruises. International Whaling Commission document: SC/58/IA4: 1-8.
  Branch, T.A. Abundance estimates for Antarctic minke whales from three completed circumpolar sets of surveys, 1978/79 to 2003/04. International Whaling Commission document: SC/58/IA8: 1-28.
  Branch, T.A. Analysis of simulated Antarctic minke surveys using the "standard" method and the "direct duplicate" method. International Whaling Commission document: SC/58/IA14: 1-5.
  Branch, T.A. Humpback abundance south of 60°S from three completed sets of IDCR/SOWER circumpolar surveys. Workshop for the comprehensive assessments of Southern Hemisphere humpback whales, 4–7 April 2006, Hobart, Australia. Document: SC/AO6/HW6: 1-14.
  Branch, T.A. Separating pygmy and Antarctic blue whales using ovarian corpora. International Whaling Commission document: SC/58/SH8: 1-17.
Branch, T.A. Report of the Scientific Committee, Annex H. Appendix 4: Comparison of SOWER CPIII abundance estimates for humpback whales in Area IV with JARPA abundance estimates. Journal of Cetacean Research and Management (Suppl.) 8: 166-167.
  Branch, T.A. and Butterworth, D.S. Suggested options for the analysis of IDCR/SOWER minke whale data. International Whaling Commission document. SC/58/IA19: 1-10.
  Branch, T.A., Palacios, D.M., Stafford, K.M., Allison, C., Bannister, J.L., Burton, C.L.K., Gill, P.C., Jenner, K.C.S., Jenner, M.-N.M., Miyashita, T., Morrice, M.G., Sturrock, V.J., Anderson, R.C., Baker, A.N., Best, P.B., Borsa, P., Childerhouse, S., Findlay, K.P., Ilangakoon, A.D., Joergensen, M., Kahn, B., Maughan, B., Mikhalev, Y.A., Oman Whale and Dolphin Research Group, Thiele, D., Tormosov, D., Van Waerebeek, K. and Warneke R. M. Past and present distribution of blue whales in the Southern Hemisphere and northern Indian Ocean. International Whaling Commission document: SC/58/Sh36: 1-27.
Branch, T.A. and Butterworth, D.S. Assessment of the East Greenland-Iceland fin whale population using a four-area model. Joint North Atlantic Marine Mammal Commission (NAMMCO)/International Whaling Commission (IWC) Scientific workshop on the catch history, stock structure and abundance of North Atlantic fin whales, Reykjavik, Iceland, 23-26 March 2006. SC/14/FW/23 and SC/M06/FW23. 1-33.
  Brandão, A. and Butterworth, D.S. An AWMPlite-like assessment of the West Greenland minke whale population. International Whaling Commission document: SC/58/AWMP10: 1-15.
Brandão, A. and Butterworth, D.S. Concerning demographic limitations on the population growth rate of West Australian (breeding stock D) humpback whales. International Whaling Commission document: SC/58/SH24: 1-15.
Brandão, A. and D.S. Butterworth. An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity. Commission for the Conservation of Antarctic Marine Living Resources Document: WG-FSA-SAM-06/12: 1-23.
Brandão, A. and D.S. Butterworth. 2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity. Commission for the Conservation of Antarctic Marine Living Resources Document: WG-FSA-06/58: 1-34.
  Johnston, S.J. and Butterworth, D.S. Updated assessments of various breeding populations of Southern Hemisphere humpback whales. Workshop for the comprehensive assessments of Southern Hemisphere humpback whales, 4–7 April 2006, Hobart, Australia. Document: SC/AO6/HW22: 1-38.
Johnston, S.J. and Butterworth, D.S. Updated assessments of Southern Hemisphere humpback whales from breeding stocks D and G. International Whaling Commission document. SC/58/SH23: 1-24.
Kurota, H., Butterworth, D.S. and Sakai, O. SBT stock assessment and projection under overcatch scenarios using the Operating Model. Commission for the Conservation of the Southern Bluefin Tuna document: CCSBT-ESC/0609/42: 1-17.
Mori, M., Butterworth, D.S. and Kitakado, T. Application of ADAPT-VPA to various stock hypotheses for the Antarctic minke whales distributed through IWC management areas IIIE to VIW. International Whaling Commission document. SC/58/IA18: 1-40.
Mori, M. and Butterworth, D.S. Further progress on modelling the krill–predator dynamics of the Antarctic ecosystem. International Whaling Commission document. SC/58/E14: 1-14.
Mori, M., Butterworth, D.S. and Kitakado, T. Application of ADAPT-VPA to Antarctic minke whales in the JARPA research area. International Whaling Commission Document SC/D06/J14: 1-32.
Mori, M., Butterworth, D.S., Zenitani, R. and Kato, H. Model-based analyses of trends over time in the age corresponding to the transition phase for Antarctic minke whales in the JARPA research area. International Whaling Commission Document SC/D06/J16: 1-17.
Plagányi, É.E. and Butterworth, D.S. A Spatial Multi-species Operating Model (SMOM) of krill–predator interactions in small-scale management units in the Scotia Sea. Commission for the Conservation of Antarctic Marine Living Resources Document: WG-EMM-06/12: 1-27.
Plagányi, É.E. and Butterworth, D.S. An illustrative Management Procedure for exploring dynamic feedback in krill catch limit allocations among small-scale management units. Commission for the Conservation of Antarctic Marine Living Resources Document: WG-EMM-06/28: 1-16.

Consultancy and Other Activities Based on Expertise Developed in Research

  Brandão, A. Further Namibian orange roughy data required for updated analyses. Namibian Ministry of Fisheries and Marine Resources document: 1-3.
  Brandão, A. Standardised male west coast rock lobster somatic growth trend including data from the 2005/06 season. Marine and Coastal Management document: WG/07/06/WCRL30: 1-5.
  Brandão, A. and Butterworth, D.S. Fisheries Independent Monitoring Survey V of the rock lobster resource of Southern Namibia (March). Component of Pisces Environmental Services (Pty) Ltd document for De Beers Marine Namibia: 1-8.
  Brandão, A. and Butterworth, D.S. Fisheries Independent Monitoring Survey VI of the rock lobster resource of Southern Namibia (May). Component of Pisces Environmental Services (Pty) Ltd document for De Beers Marine Namibia: 1-8.
Brandão, A. and Butterworth, D.S. Initial results from using a GLMM to standardise the commercial CPUE data for Namibian hake, and an update of the GLM analyses to incorporate the extra data now available for 2004 and 2005. Namibian Ministry of Fisheries and Marine Resources document: HWG/WkShop/2006/03/Doc 3: 1-14.
Brandão, A. and Butterworth, D.S. GLM standardised CPUE abundance indices for orange roughy off Namibia from 1994 now updated to include records up to 2005. Namibian Ministry of Fisheries and Marine Resources document: DWFWG/WkShop/Feb06/Doc 2: 1-15.
Brandão, A. and Butterworth, D.S. Namibian orange roughy age-structured production model assessments and projections for 2006. Namibian Ministry of Fisheries and Marine Resources document: DWFWG/WkShop/Feb06/Doc 3: 1-37.
Brandão, A. and Butterworth, D.S. Updated investigation of the orange roughy south of Johnies given further data. Namibian Ministry of Fisheries and Marine Resources document: DWFWG/WkShop/Feb06/Doc 5: 1-14.
  Brandão, A. Further Namibian orange roughy data required for updated analyses in 2007. Namibian Ministry of Fisheries and Marine Resources document: 1-3.
Butterworth, D.S. Proposed procedures for deviating from the hake OMP output for the recommendation for a TAC, and for initiating an OMP review. Marine and Coastal Management document: WG/07/06/D:H:22: 1-7.
Butterworth, D.S. Proposed procedures for deviating from OMP output for the recommendation for a TAC, and for initiating an OMP review. Marine and Coastal Management document: WG/10/06/D:H:45: 1-8.
Butterworth, D.S. and Brandão, A. Alternative structural models for the Northeast Chatham Rise orange roughy fishery. New Zealand Ministry of Fisheries review of methods and data used in orange roughy stock assessments, Wellington, February 2006, document: ORHWS/06/03: 1-26.
Butterworth, D.S. and Glazer, J.P. Management implications of the squid target effort level now computed in man-days. Marine and Coastal Management document: WG/08/06/SQ05: 1-2.
Butterworth, D.S. and Plagányi, É.E. Principles and guidelines for the use of indicators in formulating management recommendations for commercial fisheries. Marine and Coastal Management document: SWG/AUG2006/PEL/05: 1-4.
Butterworth, D.S. and Plagányi, É.E. Principles and guidelines for the use of indicators in contributing to the formulation of management recommendations for commercial fisheries subject to quantitative assessment or OMP-based regulation. Marine and Coastal Management document: WG/09/06/D:H:36: 1-4.
Butterworth, D.S. and Rademeyer, R.A. Alternative single-species approaches for the assessment of the southern African hake resources. Benguela Current Large Marine Ecosystem programme document: BCLMEHW/MAY06/9.2.1: 1-5.
Butterworth, D.S. and Rademeyer, R.A. Alternative stock structure hypotheses for the southern African hake resources. Benguela Current Large Marine Ecosystem programme document: BCLMEHW/MAY06/5.1: 1-6.
Butterworth, D.S. and Rademeyer, R.A. The implications of a comparison of projections of the reference set of operating models being used for hake OMP development with abundance index data for two subsequent years. Marine and Coastal Management document: WG/08/06/D:H:28: 1-3.
Butterworth, D.S. and Rademeyer, R.A. The potential use of population modelling to discriminate between alternative stock structure hypotheses. Benguela Current Large Marine Ecosystem programme document: BCLMEHW/MAY06/9.6: 1-2.
  Butterworth, D.S., Rademeyer, R.A., and Plagányi, É.E. Formulae used to compute TAC redistributions for sardine and anchovy pelagic fisheries. Marine and Coastal Management internal document: 1-6.
  Butterworth, D.S., Rademeyer, R.A., and Plagányi, É.E. Formulae used to compute TAC redistributions for hake and sole trawl fisheries. Marine and Coastal Management internal document: 1-5.
  Butterworth, D.S., Rademeyer, R.A., and Plagányi, É.E. Formulae used to compute TAC redistributions for the hake longline fishery. Marine and Coastal Management internal document: 1-3.
  Butterworth, D.S., Rademeyer, R.A., and Plagányi, É.E. Formulae used to compute TAC redistributions for the west coast rock lobster fishery. Marine and Coastal Management internal document: 1-5.
Cunningham, C.L. and Butterworth, D.S. Modelling the proportion of sardine and anchovy in the diet of Cape gannets: some initial investigations. Marine and Coastal Management document: SWG/MAY2006/PEL/06: 1-10.
Cunningham, C.L. and Butterworth, D.S. Issues surrounding the development of a revised OMP for the SA pelagic fishery for sardine and anchovy. Marine and Coastal Management document: SWG/MAY2006/PEL/07: 1-5.
Cunningham, C.L. and Butterworth, D.S. Revised anchovy TAC and sardine TAB for 2006, using Re-Revised OMP-04. Marine and Coastal Management document: SWG/JUNE2006/PEL/04: 1-7.
  Cunningham, C.L. and Butterworth, D.S. An update on the calibration of capped and uncapped acoustic survey data. Marine and Coastal Management document: SWG/OCT2006/PEL/03: 1-12.
Cunningham, C.L. and Butterworth, D.S. Is the sardine population now outside the range tested for OMP-04, and if so, what are the implications for the basis for recommending a 2007 directed sardine TAC? Marine and Coastal Management document: SWG/OCT2006/PEL/05: 1-7.
Cunningham, C.L. and Butterworth, D.S. Proposals for issues to be addressed in the revision of the pelagic OMP. Marine and Coastal Management document: SWG/AUG2006/PEL/07: 1-10.
Cunningham, C.L. and Butterworth, D.S. Proposed modification to OMP-04 as a result of the sardine population being outside the range tested. Marine and Coastal Management document: SWG/NOV2006/PEL/03: 1-16.
Cunningham, C.L. and Butterworth, D.S. Update regarding potential directed sardine TAC for 2007. Marine and Coastal Management document: SWG/AUG2006/PEL/09: 1-7.
Cunningham, C.L. and Butterworth, D.S. Update: Proposals for issues to be addressed in the revision of the pelagic OMP. Marine and Coastal Management document: SWG/OCT2006/PEL/04: 1-12.
Cunningham, C.L. and Butterworth, D.S. Initial sardine and anchovy TACs and sardine TAB for 2007, using Re-Revised OMP-04. Marine and Coastal Management document: SWG/DEC2006/PEL/04: 1-5.
Cunningham, C.L. and Butterworth, D.S. Further update: Proposals for issues to be addressed in the revision of the pelagic OMP. Marine and Coastal Management document: SWG/DEC2006/PEL/05: 1-14.
Cunningham, C.L. and Roel, B.A. The assessment of Iberian sardine: A Bayesian State-Space model incorporating migration and Spatially-Disaggregated data. In Sardine Dynamics and Stock Structure in the North-Eastern Atlantic. Final report to the Commission of the EU project SARDYN Q5RS-2002-000818: 1–463. Annex B1.10: 1–58.
Edwards, C. and Butterworth, D. S. Preliminary report on analysis of CPUE data from Inaccessible Island. MARAM/TRISTAN/06/JUL/1: 1-5.
  Edwards, C. and Plagányi É.E. Preliminary analysis of abalone dynamics in Zones E and G. Marine and Coastal Management document: WG/AB/06/Aug/16: 1-6.
  Edwards, C. and Plagányi, É.E. Schaefer model-based assessment of abalone dynamics in Zones E and G. Marine and Coastal Management document: WG/AB/06/Aug/23: 1-11.
Edwards, C., Johnston, S. and Butterworth, D. S. Preliminary standardisation of CPUE series for rock lobster from Inaccessible Island. MARAM/TRISTAN/06/OCT/2: 1-6.
  Edwards, C., Johnston, S. and Butterworth, D. S. Summary of preliminary standardisation of CPUE series for rock lobster from Inaccessible Island. MARAM/TRISTAN/06/NOV/3: 1-5.
  Edwards, C., Plagányi, É.E. and MacKenzie, A. Finalised data for Zones E and G. Marine and Coastal Management document: WG/AB/06/Aug/20: 1-6.
  Edwards, C., Plagányi, É.E. and MacKenzie, A. Further resolution of the South African abalone Haliotis midae database. Marine and Coastal Management document: WG/AB/06/07/08: 1-4.
  Edwards, C., Plagányi, É.E. and MacKenzie, A. Update of the South African abalone Haliotis midae database. Marine and Coastal Management document: WG/AB/06/06/02: 1-5.
Glazer, J.P. and Butterworth, D.S. A comparison of the catch and fishing day statistics from the squid LTRAMP and NMLS databases. Marine and Coastal Management document: WG/07/06/SQ02: 1-12.
Glazer, J.P. and Butterworth, D.S. A re-analysis of the squid jig CPUE data. Marine and Coastal Management document: WG/07/06/SQ03: 1-5.
Glazer, J.P. and Butterworth, D.S. A conversion of squid effort from hours to man-days and some related considerations. Marine and Coastal Management document: WG/08/06/SQ04: 1-5.
Glazer, J.P. and Butterworth, D.S. A summary of the General Linear Modelling approach applied to standardize the CPUE data for the offshore trawl fishery for Merluccius capensis and M. paradoxus off the coast of South Africa. Benguela Current Large Marine Ecosystem programme document: BCLMEHW/MAY06/8.6b: 1-10.
  Glazer, J.P. and Butterworth, D.S. An index of abundance for the west coast rock lobster resource derived from a GLM analysis of trap, bakkie and deckboat CPUE data for input of the OMP. Marine and Coastal Management document: WG/07/06/WCRL28: 1-9.
Glazer, J.P. and Butterworth, D.S. Considerations for effort restrictions in 2007 in the South African jig fishery. Marine and Coastal Management document: WG/09/06/SQ07: 1-4.
  Glazer, J.P. and Butterworth, D.S. GLM analyses applied to the trapboat CPUE data per super-area. Marine and Coastal Management document: WG/02/06/WCRL06: 1-47.
  Glazer, J.P. and Butterworth, D.S. GLM analyses applied to the bakkie CPUE data per super-area. Marine and Coastal Management document: WG/02/06/WCRL07: 1-39.
Glazer, J.P. and Butterworth, D.S. Proposed method for standardizing the west coast rock lobster commercial CPUE data per fishing method and Super-area. Marine and Coastal Management document: WG/01/06/WCRL05: 1-13.
  Glazer, J.P. and Butterworth, D.S. Sensitivity tests conducted for the West Coast rock lobster super-area analyses. Marine and Coastal Management document: WG/02/06/WCRL08: 1-6.
  Johnston, S.J. Historic catch data for West Coast rock lobster super-area assessments. Marine and Coastal Management document: WG/02/06/WCRL13: 1-5.
  Johnston, S.J. Information on West Coast rock lobster super areas Area 34 and Area 56 w.r.t. catch-at-size, F% and somatic growth data. Marine and Coastal Management document: WG/02/06/WCRL19: 1-6.
  Johnston, S.J. Recommendation regarding the split between A3-4 and A5-6 for West Coast rock lobster assessments. Marine and Coastal Management document: WG/02/06/WCRL12: 1-1.
  Johnston, S.J. Results of super-area assessments following change of including R2000 as fit parameter and Task Group report back. Marine and Coastal Management document: WG/05/06/WCRL24: 1-3.
  Johnston, S.J. Results of super-area assessments following change of including R2000 as fit parameter and Task Group report back. Marine and Coastal Management document: WG/05/06/WCRL24: 1-3.
Johnston, S.J. and Butterworth, D.S. Final area-disaggregated assessments results for west coast rock lobster. Marine and Coastal Management document: WG/06/06/WCRL:25: 1–8.
Johnston, S.J. and Butterworth, D.S. MARAM/OLRAC averaged final area-disaggregated assessment results for west coast rock lobster. Marine and Coastal Management document: WG/07/06/WCRL32: 1-12.
  Johnston, S.J. and Butterworth, D.S. Notes on the Area-disaggregated OMP development for west coast rock lobster. Marine and Coastal Management document: WG/12/06/WCRL33. 1-18.
  Johnston, S.J. and Butterworth, D.S. Recommendations made at the December 2005 rock lobster international workshop in the context of preparing for the implementation of a new OMP for west coast rock lobster. Marine and Coastal Management document: WG/01/06/WCRL02: 1-8.
  Johnston, S.J. and Butterworth, D.S. Regarding key sources of uncertainty and their relative weights for testing the OMP for west coast rock lobster, and certain other projection assumptions. Marine and Coastal Management document: WG/03/06/WCRL21: 1-3.
  Johnston, S.J. and Butterworth, D.S. Results of super-area assessments following recent data updates. Marine and Coastal Management document: WG/03/06/WCRL20: 1-8.
  Johnston, S.J. and Butterworth, D.S. Some preliminary results for initial OMP options. Marine and Coastal Management document: WG/12/06/WCRL34. 1-17.
  Johnston, S.J. and Butterworth, D.S. Some updates on West Coast rock lobster super-area assessments. Marine and Coastal Management document: WG/02/06/WCRL14: 1-2.
Johnston, S.J. and Butterworth, D.S. The 2006 age-structured production model assessments and projections for the South Coast rock lobster resource—routine update. Marine and Coastal Management document: WG/06/06/SCRL03: 1-25.
  Johnston, S.J., Glazer, J. and Brandão, A. West Coast rock lobster TAC for the 2006/07 season as calculated using the current OMP. Marine and Coastal Management document: WG/07/06/WCRL31: 1-6.
  Maharaj, G., MacKenzie, A. and Plagányi, É.E. Summary of commercial, poaching and FIAS size composition and catch-at-age and FIAS abundance data updates for the abalone fishery: 2006. Marine and Coastal Management document: WG/AB/06/06/01: 1-13.
  Plagányi, É.E. 2006 projection results for abalone in Zones A–D. Marine and Coastal Management document: WG/AB/06/Aug/24: 1-14.
  Plagányi, É.E. A spatial multi-species Operating Model (SMOM) for use in modelling penguin-pelagic fish interactions. Marine and Coastal Management document: SWG/AUG2006/PEL/04: 1-11.
  Plagányi, É.E. Abalone spatial- and age-structured assessment model preliminary results for Zones A, B, C and D in 2006. Marine and Coastal Management document: WG/AB/06/Aug/17: 1-26.
  Plagányi, É.E. An iterative effort-weighted GLM to standardise abalone catch-per-unit-effort data for Zones A–D over the period 1980–2005. Marine and Coastal Management document: WG/AB/06/07/10: 1-15.
  Plagányi, É.E. Changes and explorations with the abalone model for Zones A–D. Marine and Coastal Management document: WG/AB/06/07/12: 1-3.
  Plagányi, É.E. Further assessment model results when fitting to FIAS data for Zone B that excludes Station 11. Marine and Coastal Management document: WG/AB/06/Aug/18: 1-5.
  Plagányi, É.E. Suggestions for modelling African penguin populations given spatial disaggregation considerations. Marine and Coastal Management document: SWG/OCT2006/PEL/07: 1-5.
Plagányi, É.E. and Butterworth, D.S. Aspects of modelling Robben Island African Penguin Spheniscus demersus populations. Marine and Coastal Management document: SWG/May2006/PEL/10: 1-5.
  Plagányi, É.E. and Butterworth, D.S. Preliminary standardisation of the CPUE data for Zones E and G based on a comparison of diver efficiency. Marine and Coastal Management document: WG/AB/06/Aug/21: 1-4.
  Plagányi, É.E. and Edwards, C. Synopsis of available data for abalone TURFs. Marine and Coastal Management document: WG/AB/06/06/03: 1-10.
  Plagányi, É.E. and Edwards, C. Synopsis of available data for abalone TURFs following update of database. Marine and Coastal Management document: WG/AB/06/07/09: 1-9.
  Plagányi, É.E. and MacKenzie, A. Analysis of abalone poaching confiscation data and CPUPE for 2006. Marine and Coastal Management document: WG/AB/06/07/11: 1-6.
Plagányi, É.E., Butterworth, D.S. and Rademeyer, R.A. Multi-species considerations in planning methodologies for possible joint South African-Namibian hake assessments. Benguela Current Large Marine Ecosystem programme document: BCLMEHW/MAY06/9.4a: 1-8.
  Plagányi, É.E., MacKenzie, A. and Edwards, C. Revised data analysis for abalone in Zones E and G. Marine and Coastal Management document: WG/AB/06/06/04: 1-4.
  Pulfrich, A., Brandão, A., Butterworth, D.S., and Noffke, M. Marine dredging project: FIMS V survey report. Monitoring of rock lobster abundance, recruitment and migration on the Southern Namibian coast. Pisces Environmental Services (Pty) Ltd document for De Beers Marine Namibia. 1-54.
  Pulfrich, A., Penney, A.J., Brandão, A., Butterworth, D.S., and Noffke, M. Marine dredging project: FIMS final report. Monitoring of rock lobster abundance, recruitment and migration on the Southern Namibian coast. Pisces Environmental Services (Pty) Ltd document for De Beers Marine Namibia. 1-149.
Rademeyer, R.A. and Butterworth, D.S. Detailed methodology and results for the final reference set of the South African Merluccius paradoxus and M. capensis resources for use in OMP testing. Marine and Coastal Management document: WG/02/06/D:H:5: 1-35.
  Rademeyer, R.A. and Butterworth, D.S. Further results for the SR1 vs SR2 scenarios of the South African hake reference set. Marine and Coastal Management document: WG/06/06/D:H:16: 1-2.
Rademeyer, R.A. and Butterworth, D.S. Further sensitivities on the proposed revised reference set. Marine and Coastal Management document: WG/01/06/D:H:2: 1-9.
Rademeyer, R.A. and Butterworth, D.S. Hake projections under a variety of candidate OMPs. Marine and Coastal Management document: WG/09/06/D:H:38: 1-17.
  Rademeyer, R.A. and Butterworth, D.S. Hake projections under a variety of candidate OMPs for a series of robustness tests. Marine and Coastal Management document: WG/09/06/D:H:39: 1-20.
Rademeyer, R.A. and Butterworth, D.S. Further hake projections under four candidate OMPs. Marine and Coastal Management document: WG/10/06/D:H:41: 1-25.
Rademeyer, R.A. and Butterworth, D.S. Management procedure robustness tests for the South African Merluccius paradoxus and M. capensis resources under a constant catch scenario. Marine and Coastal Management document: WG/03/06/D:H:6v1: 1-23.
Rademeyer, R.A. and Butterworth, D.S. Robustness tests to be used in OMP testing for the South African Merluccius paradoxus and M. capensis resources. Marine and Coastal Management document: WG/03/06/D:H:6v2: 1-12.
Rademeyer, R.A. and Butterworth, D.S. Merluccius paradoxus and M. capensis length frequency distributions from Nansen surveys. Benguela Current Large Marine Ecosystem programme document: BCLMEHW/MAY06/7.2: 1-7.
  Rademeyer, R.A. and Butterworth, D.S. Progress on the South African hake OMP analyses. Marine and Coastal Management document: WG/06/06/D:H:13: 1-3.
Rademeyer, R.A. and Butterworth, D.S. Proposed update of the proposed revised reference set for the joint assessment of the South African Merluccius paradoxus and M. capensis resources for use in OMP testing. Marine and Coastal Management document: WG/01/06/D:H:1: 1-12.
Rademeyer, R.A. and Butterworth, D.S. Results of trials of candidate OMPs for the South African hake resource. Marine and Coastal Management document: WG/07/06/D:H:21: 1-15.
Rademeyer, R.A. and Butterworth, D.S. Results from trials of variants of candidate OMP1 for the South African hake resource to illustrate trade-offs. Marine and Coastal Management document: WG/08/06/D:H:23: 1-8.
Rademeyer, R.A. and Butterworth, D.S. Summary of the most recent South African hake assessments. Benguela Current Large Marine Ecosysteunderm programme document: BCLMEHW/MAY06/7.1: 1-15.
  Rademeyer, R.A. and Butterworth, D.S. Updated assessment and constant catch projections for the Namibian hake resource. Namibian Ministry of Fisheries and Marine Resources document: HWG/WkShop/2006/03/Doc 5: 1-30.
  Rademeyer, R.A. and Butterworth, D.S. Updated assessments and projections for South African hake resource. Marine and Coastal Management document: WG/08/06/D:H:29: 1-10.
Rademeyer, R.A. and Butterworth, D.S. Updated reference set for the South African Merluccius paradoxus and M. capensis resources and projections under a series of candidate OMPs. Marine and Coastal Management document: WG/09/06/D:H:33: 1-27.
Rademeyer, R.A. and Butterworth, D.S. Further results relating to appropriate TACs for the South African Merluccius paradoxus and M. capensis resources. Marine and Coastal Management document: WG/09/06/D:H:34: 1-10.
  Rademeyer, R.A., Brandão, A. and Butterworth, D.S. Data used for the 2005 assessment of the Namibian hake resource and questions about updates. Namibian Ministry of Fisheries and Marine Resources document: 1-11.
  Rademeyer, R.A., Brandão, A. and Butterworth, D.S. Data used for the 2006 assessment of the Namibian hake resource. Namibian Ministry of Fisheries and Marine Resources document: 1-12.
Somhlaba, S., Brandão, A., Plagányi, É.E. and Butterworth, D.S. An indirect investigation of the possible influence of port on the estimation of observer effects on catch rates in the pelagic fishery. Marine and Coastal Management document: WG/MAY2006/PEL/04: 1-4.