Research Papers and Refereed Articles
2016
 | Carruthers, T.R., Kell, L.T., Butterworth, D.S., Maunder, M.N, Geromont, H.F., Walters, C., McAllister, M.K., Hillary, R., Levontin, P., Kitakado, T. and Davies, C.R. Performance review of simple management procedures. ICES Journal of Marine Science, 73(2): 464-482. |
2015
| Butterworth, D.S., Plagányi, É.E., Robinson, W.M.L, Moosa, N and de Moor, C.L. Penguin modelling approach queried. Ecological Modelling 316: 78-80 |
| de Moor CL, and Butterworth DS. Assessing the South African sardine resource: two stocks rather than one? African Journal of Marine Science. 37(1): 41-51 |
| de Moor, C.L., Johnston, S.J., Brandao, A., Rademeyer, R.A., Glazer, J.P., Furman, L.B. and Butterworth, D.S. A review of the assessments of the major fisheries resources in South Africa. African Journal of Marine Science, 37(3): 285-311 |
| Deroba, J.J., Butterworth, D.S., Methot, R.D. Jr., De Oliveira, J., Fernandez, C., Nielsen, A., Cadrin, S.X., Dickey-Collas, M., Legault, C.M., Ianelli, J., Valero, J.L., Needle, C., O'Malley, J.M., Chang, Y-J., Thompson, G.G., Canales, C., Swain, D.P., Miller, D.C.M., Hintzen, N.T., Bertignac, M., Ibaibarriaga, L., Silva, A., Murta, A., Kell, L., de Moor, C.L., Parma, A., Dichmont, C.M., Restrepo, V., Ye, Y., Jardim, E., Blaylock, J., Mood, M. Simulation testing the robustness of stock assessment models to error: some results from the ICES Strategic Initiative on Stock Assessment Methods. ICES Journal of Marine Science, 72(1): 19-30. |
| Geromont, H.F. and Butterworth, D.S. Generic management procedures for data-poor fisheries: forecasting with few data. ICES Journal of Marine Science, 72(1): 251-261 |
| Geromont, H.F. and Butterworth, D.S. Complex assessments or simple management procedures for efficient fisheries management: a comparative study. ICES Journal of Marine Science, 72(1): 262-274 |
| Hanchet, S., Sainsbury, K., Butterworth, D.S., Darby, C., Bizikov, V., Rune Godo, O., Ichii, T., Kock, K-H., Lopez Abellan, L. and Vacchi, M. 2014 CCAMLR's precautionary approach to management of Ross Sea toothfish fishery. Antarctic Science, 27(4): 333-340 |
| Robinson, W., Butterworth, D.S. and Plagányi, É.E. Quantifying the projected impact of the South African sardine fishery on the Robben Island penguin colony. ICES Journal of Marine Science, 72(6): 1822-1833. |
2014
| Blamey LK, Plagányi ÉE, and Branch GM. Was overfishing of predatory fish responsible for a lobster-induced regime shift in the Benguela? Ecological Modelling, 273: 140–150. |
| Butterworth DS, Rademeyer RA, Brandão A, Geromont HF, and Johnston SJ. Does selectivity matter? A fisheries management perspective. Fisheries Research, 158: 194–204. |
| Plagányi, É.E., Ellis, N., Blamey, L.K., Morello, E.B., Norman-Lopez, A., Robinson, W., Sporic, M. and Sweatman, H. Ecosystem modelling provides clues to understanding ecological tipping points. Mar Ecol Prog Ser, 512: 99-113. |
| Punt AE, A'mar T, Bond NA, Butterworth DS, de Moor CL, De Oliveira JAA, Haltuch MA, Hollowed AB, and Szuwalski C. Fisheries management under climate and environmental uncertainty: control rules and performance simulation. ICES Journal of Marine Science, 71(8): 2208-2220 |
2013
| Agnew D, Gutiérrez NL, and Butterworth DS. Fish catch data: Less than what meets the eye. Marine Policy 42: 268–269. |
| Blamey LK, Plagányi ÉE, and Branch GM. Modeling a regime shift in a kelp-forest ecosystem caused by a lobster range expansion. Bulletin of Marine Science 89(1): 347–375. |
| de Moor CL, Butterworth DS, and Coetzee JC. Can anchovy age structure be estimated from length distribution data collected during surveys? African Journal of Marine Science 35(3): 335–342 |
2012
| 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. |
2011
 | Branch TA. Humpback whale abundance south of 60°S from three complete circumpolar sets of surveys. Journal of Cetacean Research and Management (Special Issue) 3: 53–69. |
| Brandão A and Butterworth DS. Concerning demographic limitations on the population growth rate of West Australian (breeding stock D) humpback whales. Journal of Cetacean Research and Management (Special Issue) 3: 201–208. |
| de Moor CL, Butterworth DS, and De Oliveira JAA. Is the management procedure approach equipped to handle short-lived pelagic species with their boom and bust dynamics? The case of the South African fishery for sardine and anchovy. ICES Journal of Marine Science 68(10): 2075–2085. |
| Johnston SJ, Zerbini AN, and Butterworth DS. A Bayesian approach to assess the status of Southern Hemisphere humpback whales (Megaptera novaengliae) with an application to breeding stock G. Journal of Cetacean Research and Management (Special Issue) 3: 309–317. |
| Plagányi ÉE, Butterworth DS, and Burgener M. Illegal and unreported fishing on abalone—Quantifying the extent using a fully integrated assessment model. Fisheries Research 107: 221–232. |
| Plagányi ÉE, Weeks SJ, Skewes TD, Gibbs MT, Poloczanska ES, Norman-López A, Blamey LK, Soares M, and Robinson WML. Assessing the adequacy of current fisheries management under changing climate: a southern synopsis. ICES Journal of Marine Science 68: 1305–1317. |
| Rademeyer RA and Butterworth DS. Technical details underlying the Management Strategy Evaluation process leading to selection of a Management Procedure for Western Component (4Xopqrs5) pollock. DFO Can. Sci. Advis. Sec. Res. Doc. 2011/090: vi+32 pp. |
| Raemaekers S, Hauck M, Burgener M, Mackenzie A, Maharaj G, Plagányi, ÉE, and Britz PJ. Review of the causes of the rise of the illegal South African abalone fishery and consequent closure of the rights-based fishery. Ocean & Coastal Management 54: 433–445. |
2010
| Butterworth DS, Johnston SJ, and Brandão A. Pretesting the likely efficacy of suggested management approaches to data-poor fisheries. Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 2: 131–145. |
| Butterworth DS, Bentley N, De Oliveira JAA, Donovan GP, Kell LT, Parma AM, Punt AE, Sainsbury KJ, Smith ADM, and Stokes TK. Purported flaws in management strategy evaluation: basic problems or misinterpretations? ICES Journal of Marine Science, 67: 567–574. |
| Plagányi ÉE and Butterworth DS. A spatial- and age-structured assessment model to estimate the impact of illegal fishing and ecosystem change on the South African abalone Haliotis midae resource. African Journal of Marine Science, 32(2): 207–236. |
2009
| Branch TA, Mikhalev YA, and Kato H. Separating pygmy and Antarctic blue whales using long-forgotten ovarian data. Marine Mammal Science 25(4): 833–854. |
| Brandão A and Butterworth DS. A proposed Management Procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity. CCAMLR Science 16: 33–69. |
| Edwards CTT, Rademeyer RA, Butterworth DS, and Plagányi ÉE. Investigating the consequences of Marine Protected Areas for the South African deep-water hake (Merluccius paradoxus) resource. ICES Journal of Marine Science 66: 72–81. |
| de Moor CL and Butterworth DS. The 2004 re-assessment of the South African sardine and anchovy populations to take account of revisions to earlier data and recent record abundances. African Journal of Marine Science 31(3): 333–348. |
| de Moor CL and Butterworth DS. Setting the TAC for sardine and anchovy. Maritime Southern Africa November/December 2009, 29–31. |
2008
| Branch TA and Mikhalev Y. Regional differences in length at sexual maturity for female blue whales based on recovered Soviet whaling data. Marine Mammal Science 24: 690–703. |
| Butterworth DS. A commentary on: salvaged pearls: lessons learned from a floundering attempt to develop a management procedure for Southern Bluefin Tuna. Fisheries Research 94: 351–354. |
| Butterworth DS and Rademeyer RA. Statistical catch-at-age analysis vs. ADAPT-VPA: the case of Gulf of Maine cod. ICES Journal of Marine Science, 65: 1717–1732. |
| Coetzee JC, Merkle D, de Moor (formerly Cunningham) CL, Twatwa NM, Barange M, and Butterworth DS. Refined estimates of South African pelagic fish biomass from hydro-acoustic surveys: quantifying the effects of target strength, signal attenuation and receiver saturation. African Journal of Marine Science 30(2): 205–217. |
| de Moor CL, Butterworth DS, and Coetzee JC. Revised estimates of abundance of South African sardine and anchovy from acoustic surveys adjusting for echosounder saturation in earlier surveys and attenuation effects for sardine. African Journal of Marine Science 30(2): 219–232. |
| Edwards CTT and Plagányi ÉE. Participatory assessment of the South African abalone resource and its impact on predicted population trajectories. South African Journal of Science 104: 185–191. |
| Rademeyer RA, Butterworth DS, and Plagányi ÉE. A history of recent bases for management and the development of a species-combined Operational Management Procedure for the South African hake. African Journal of Marine Science 30: 291–310. |
| Rademeyer RA, Butterworth DS, and Plagányi ÉE. Assessment of the South African Hake resource taking its two-species nature into account. African Journal of Marine Science 30: 263–290. |
2007
| Branch TA. Abundance of Antarctic blue whales south of 60°S from three complete circumpolar sets of surveys. Journal of Cetacean Research and Management 9(3): 253–262. |
| Branch TA, Stafford KM, Palacios DM, Allison C, Bannister JL, Burton CLK, Cabrera E, Carlson CA, Galletti Vernazzani B, Gill PC, Hucke-Gaete R, Jenner KCS, Jenner M-NM, Matsuoka K, Mikhalev YA, Miyashita T, Morrice MG, Nishiwaki S, Sturrock VJ, Tormosov D, Anderson RC, Baker AN, Best PB, Borsa P, Brownell RL Jr, Childerhouse S, Findlay KP, Gerrodette T, Ilangakoon AD, Joergensen M, Kahn B, Ljungblad DK, Maughan B, McCauley RD, McKay S, Norris TF, Oman Whale and Dolphin Research Group, Rankin S, Samaran F, Thiele D, Van Waerebeek K, and Warneke RM. Past and present distribution, densities and movements of blue whales Balaenoptera musculus in the Southern Hemisphere and northern Indian Ocean. Mammal Review 37: 116–175. |
| Branch TA, Abubaker EMN, Mkango S, and Butterworth DS. Separating southern blue whale subspecies based on length frequencies of sexually mature females. Marine Mammal Science 23: 803–833. |
| Butterworth DS. Why a management procedure approach? Some positives and negatives. ICES Journal of Marine Science 64: 613–617. |
| Cunningham CL, Reid DG, McAllister MK, Kirkwood GP, and Darby CD. A Bayesian state-space model for mixed-stock migrations, with application to Northeast Atlantic mackerel Scomber scombrus. African Journal of Marine Science 29(3): 347–367. |
| Plagányi ÉE, Rademeyer RA, Butterworth DS, Cunningham CL, and Johnston SJ. Making management procedures operational – innovations implemented in South Africa. ICES Journal of Marine Science 64: 626–632. |
| Rademeyer RA, Plagányi ÉE, and Butterworth DS. Tips and tricks in designing management procedures. ICES Journal of Marine Science 64: 618–625. |
2006
| 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. |
2005
| Best PB, Reeb D, Bethrew M, Palsbøll P, Schaeff C, and Brandão A. Biopsying Southern Right whales: their reactions and effects on reproduction. Journal of Wildlife Management 69(3): 1171–1180. |
| Branch TA, Hilborn R, and Bogazzi E. Escaping the tyranny of the grid: a more realistic way of defining fishing opportunities. Canadian Journal of Fisheries and Aquatic Sciences 62: 631–642. |
| Butterworth DS and Rademeyer RA. Sustainable management initiatives for the Southern African hake fisheries over recent years. Bulletin of Marine Science 76(2): 287–319. |
| De Oliveira JAA and Butterworth DS. Limits to the use of environmental indices to reduce risk and/or increase yield in the South African anchovy fishery. African Journal of Marine Science 27(1): 191–203. |
| Johnston SJ and Butterworth DS. Evolution of operational management procedures for the South African West Coast rock lobster (Jasus lalandii) fishery. New Zealand Journal of Marine and Freshwater Research 39: 687–702. |
| Minte-Vera CV, Branch TA, Stewart IJ, and Dorn MW. Practical application of meta-analysis results: avoiding the double use of data. Canadian Journal of Fisheries and Aquatic Sciences 62: 925–929. |
| Payne AG, Agnew DJ, and Brandão A. Preliminary assessment of the Falklands Patagonian toothfish (Dissostichus eleginoides) population: Use of recruitment indices and the estimation of unreported catches. Fisheries Research 76: 344–358. |
2004
| Branch TA, Matsuoka K, and Miyashita T. Evidence for increases in Antarctic blue whales based on Bayesian modelling. Marine Mammal Science 20(4): 726–754. |
| Brandão A, Butterworth DS, Johnston SJ, and Glazer JP. Using a GLMM to estimate the somatic growth rate trend for male South African west coast rock lobster, Jasus lalandii. Fisheries Research 70: 339–349. |
| Butterworth DS and Plagányi ÉE. A brief introduction to some approaches to multispecies/ecosystem modeling in the context of their possible application in the management of South African fisheries. African Journal of Marine Science 26: 53–61. |
| De Oliveira JAA and Butterworth DS. Developing and refining a joint management procedure for the multispecies South African pelagic fishery. ICES Journal of Marine Science 61: 1432–1442. |
| Mori M and Butterworth DS. Consideration of multispecies interactions in the Antarctic: a preliminary model of the minke whale–blue whale–krill interaction. African Journal of Marine Science 26: 245–259. |
| Plagányi ÉE and Butterworth DS. A critical look at the potential of Ecopath with ecosim to assist in practical fisheries management. African Journal of Marine Science 26: 261–287. |
2003
| Best PB, Rademeyer RA, Burton C, Ljungbald D, Sekiguchi K, Shimada H, Thiele D, Reeb D, and Butterworth DS. The abundance of blue whales on the Madagascar Plateau, December 1996. Journal of Cetacean Research and Management 5(3): 253–260. |
| Butterworth DS, Ianelli JN, and Hilborn R. A statistical model for stock assessment of southern bluefin tuna with temporal changes in selectivity. African Journal of Marine Science 25(1): 331–361. |
| Groeneveld JC, Butterworth DS, Glazer JP, Branch GM, and Cockcroft AC. An experimental assessment of the impact of gear saturation on an abundance index for an exploited rock lobster resource. Fisheries Research 65:453–465. |
| Mori M, Butterworth DS, Brandão A, Rademeyer RA, Okamura HO, and Matsuda HM. Observer experience and Antarctic minke whale sighting ability in the IWC/IDCR-SOWER surveys. Journal of Cetacean Research and Management 5(1): 1–11. |
| Okamura H, Kitakado T, Hiramatsu K, and Mori M. Abundance estimation of diving animals by the double-platform line transect method. Biometrics 59: 512–520. |
2002
| Brandão A, Watkins BP, Butterworth DS, and Miller DGM. A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ. CCAMLR Science 9: 11–32. |
| Butterworth DS, Borchers DL, and Punt AE. Dynamic response analysis for the eastern North Pacific gray whale population: An alternative approach. Journal of Cetacean Research and Management 4(1): 77–84. |
| Butterworth DS, Korrûbel JL, and Punt AE. What is needed to make a simple density-dependent response population model consistent with data for the eastern North Pacific gray whales? Journal of Cetacean Research and Management 4(1): 63–76. |
| Glazer JP and Butterworth DS. GLM-based standardization of the catch per unit effort series for South African west coast hake, focusing on adjustments for targeting other species. South African Journal of Marine Science 24(1): 323–339. |
| Moloney CL and Johnston SJ. Using decision analysis to evaluate candidate OMPs for the South African west coast rock lobster fishery. South African Journal of Science 98: 461–464. | |
| Pulfrich A and Branch TA. Population dynamics and potential yield of three species of giant winkles in the Western Cape, South Africa. South African Journal of Marine Science 24: 161–183. |
| Punt AE and Butterworth DS. An examination of certain of the assumptions made in the Bayesian approach used to assess the eastern North Pacific stock of gray whales (Eschrichtius robustus). Journal of Cetacean Research and Management 4(1): 99–110. |
2001
| Best PB, Brandão A, and Butterworth DS. Demographic parameters of southern right whales off South Africa. Journal of Cetacean Research and Management (Special Issue) 2: 161–169. |
| Branch TA. A review of orange roughy Hoplostethus atlanticus fisheries, estimation methods, biology and stock structure. South African Journal of Marine Science 23: 181–203. |
| Branch TA and Butterworth DS. Estimates of abundance south of 60°S for cetacean species sighted frequently on the 1978/79 to 1997/98 IWC/IDCR-SOWER sighting surveys. Journal of Cetacean Research and Management 3(3): 251–270. |
| Branch TA and Butterworth DS. Southern Hemisphere minke whales: standardised abundance estimates from the 1978/79 to 1997/98 IDCR-SOWER surveys. Journal of Cetacean Research and Management 3(2): 143–174. |
| Butterworth DS and Geromont HF. Evaluation of a class of possible simple interim management procedures for the Namibian hake fishery. South African Journal of Marine Science 23(1): 357–374. |
| Plagányi ÉE and Butterworth DS. Competition with fisheries. In Encyclopedia of Marine Mammals. WF Perrin, B Würsig, and HGM Thewissen (Eds). Academic Press 268–273. | |
| Plagányi ÉE, Butterworth DS, and Brandão A. Toward assessing the South African abalone Haliotis midae stock using an age-structured production model. Journal of Shellfish Research 20(2): 813–828. |
2000
| Brandão A, Butterworth DS, and Brown MR. Maximum possible humpback whale increase rates as a function of biological parameter values. Journal of Cetacean Research and Management 2 (Suppl.): 192–193. |
| Butterworth DS. Possible interpretation problems for the current CITES listing criteria in the context of marine fish species under commercial harvest. Population ecology 42(1): 29–35. | |
| Dichmont CM, Butterworth DS, and Cochrane KL. Towards adaptive approaches to management of the South African Abalone Haliotis Midae Fishery. South African Journal of Marine Science 22(1): 33–42. |
| Punt AE, Butterworth DS, and Wada S. On the use of allele frequency data within a Bayesian framework: evaluation of the relative probabilities of alternative stock structure hypotheses for North Pacific minke whales. Journal of Cetacean Research and Management 2(2): 151–158. |
| Punt AE and Butterworth DS. Why do Bayesian and maximum likelihood assessments of the Bering-Chukchi-Beaufort Seas stock of bowhead whales differ? Journal of Cetacean Research and Management 2(2): 125–133. |
| Roel BA and Butterworth DS. Assessment of the South African chokka squid Loligo vulgaris reynaudii: Is disturbance of aggregations by the recent jig fishery having a negative impact on recruitment? Fisheries research 48(3): 213–228. |
| Thomson RB, Butterworth DS, Boyd IL, and Croxall JP. Modeling the consequences of Antarctic krill harvesting on Antarctic fur seals. Ecological Applications 10(6): 1806–1819. |
1999
| Butterworth DS and Punt AE. An initial examination of possible inferences concerning MSYR for Southern Hemisphere minke whales from recruitment trends estimated in catch-at-age analyses. Journal of Cetacean Research and Management 1(1): 33–39. |
| Butterworth DS and Punt AE. Experiences in the evaluation and implementation of management procedures. ICES Journal of Marine Science 56(6): 985–998. |
| Butterworth DS and Punt AE. On assessment of the Bering-Chukchi-Beaufort Seas stock of bowhead whales (Balaena mysticetus) using a Bayesian approach. Journal of Cetacean Research and Management 1(1): 53–71. |
| Butterworth DS, Punt AE, Geromont HF, Kato H, Fujise Y. Inferences on the dynamics of Southern Hemisphere minke whales from ADAPT analyses of catch-at-age information. Journal of Cetacean Research and Management 1(1): 11–32. |
| Stokes TK, Butterworth DS, Stephenson RL, and Payne AIL. Confronting Uncertainty in the Evaluation and Implementation of Fisheries-Management Systems: Introduction. ICES Journal of Marine Science 56(6): 795–796. |
| Thomson RB, Butterworth DS, and Kato H. Has the age at transition of Southern Hemisphere minke whales declined over recent decades? Marine Mammal Science 15(3): 661–682. |
1998
| Cochrane KL, Butterworth DS, De Oliveira JAA, Roel BA. Management procedures in a fishery based on highly variable stocks and with conflicting objectives: experiences in the South African pelagic fishery. Reviews in Fish Biology and Fisheries 8(2): 177–214. | |
| De Oliveira JAA, Butterworth DS, Roel BA, Cochrane KL, Brown JP. The application of a management procedure to regulate the directed and bycatch fishery of South African sardine Sardinops sagax. South African Journal of Marine Science 19(1): 449–469. |
| Lipiński MR, Butterworth DS, Augustyn CJ, Brodziak JKT, Christy G, Des Clers S, Jackson GD, O'Dor RK, Pauly D, Purchase LV, Roberts MJ, Roel BA, Sakurai Y, and Sauer WHH. Cephalopod fisheries: a future global upside to past overexploitation of living marine resources? Results of an international workshop, 31 August–2 September 1997, Cape Town, South Africa. South African Journal of Marine Science 20(1): 463–469. |
| Roel BA, Cochrane KL, and Butterworth DS. Investigation on the effects of different levels of effort and of the closed season in the jig fishery for chokka squid Lougo vulgaris reynaudii. South African Journal of Marine Science 19(1): 501–512. |
1997
| Cochrane KL, Butterworth DS, and Payne AIL. South Africa's offshore living marine resources: the scientific basis for management of the fisheries. Transactions of the Royal Society of South Africa 52(1): 149–176. |