Author:Brandão, Anabela; Butterworth, Doug SDate:2008This paper sets out the data that are presently available and data that are still required for the assessment analyses of the South African kingklip resource.Read more
Author:Brandão, Anabela; Best, Peter B; Butterworth, Doug SDate:2010Aerial counts of right whale cow-calf pairs on the south coast of South Africa between 1971 and 2006 indicate an annual instantaneous population increase rate of 0.069 a year (95% CI 0.064, 0.074). Annual photographic surveys since 1979 have ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2013This paper provides results from the application of the software developed by Andre Punt for the West bowhead whale trials as agreed at the AWMP Intersessional Workshop (IWC, 2014) to four potential SLAs. To facilitate comparison across ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2013In what is an initial analysis, four possible SLAs are run for the evaluation and robustness trials developed at the Fourth AWMP Workshop for West Greenland humpbacks and bowhead whales. A simple integrative approach to provide a ready coarse ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2014This paper provides results from the application of the software developed by Andre Punt for the West humpback whale trials as agreed at the AWMP Intersessional Workshop (IWC, 2014) to four potential SLAs. To facilitate comparison across ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2014This paper provides results from the application of the software developed by Andre Punt for the West humpback whale trials as agreed at the AWMP Intersessional Workshop (IWC, 2014) to four potential SLAs. To facilitate comparison across ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2007Three Operating Models (OMs) reflecting an “Optimistic”, “Intermediate” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region are developed which take account of the different selectivities of past ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2010In this paper the FIMS analysis reported in Brandão and Butterworth (2009) to obtain relative abundance indices for rock lobster is updated to include FIMS data for the 2009/10 season.Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2010Length frequency distributions obtained from the FIMS of the west coast rock lobster constitute one of data inputs into the assessment as well as an estimate of the percentage of females. The length composition of the catch for each station ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2013The 2012 assessment of abalone in Zones A-D is updated to include new data and modified to take the standard error of the estimated poaching trend into account. Projections are shown for different scenarios for the future commercial and ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2013The 2012 assessment of abalone in Zones A-D is updated to include new data and modified to take the standard error of the estimated poaching trend into account. Projections are shown for different scenarios for the future commercial and ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2014GLMM standardisations of longline and trotline toothfish CPUE data are presented based on a “fishing” year rather than a calendar year. Possible relationships between average depth of sets and CPUE are investigated but no discernable differences ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:Aug 2018Analyses of the tag-recapture data available for the PEI toothfish resource are undertaken to evaluate a vessel effect and an area effect on tag recovery rates as well as to determine a possible difference in tagging “success” between the two ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2015This paper presents improved variants of the SLAs for which results were reported at the 2014 Scientific Committee meeting in Bled. Candidates are presented ranging from complete satisfaction of the conservation performance criterion for the ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2014Further projections suggest that the resource would increase slowly under constant annual future catches of 500 t and for all but one of the sensitivity tests, a TAC of 600 t would still result in a slowly increasing resource.Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:Oct 2016For stochastic future recruitment and for annual catch levels of both 575 tons (the present TAC) and 700 tons, the median of the spawning biomass estimates drops initially, but returns to its current level within a decade, while the exploitable ...Read morecb
Author:Brandão, Anabela; Butterworth, Doug SDate:2009This paper reports on results for the Reference-case model (when the updated and extrapolated “old” CPUE series is used in the model fitting procedure) that were requested as well as results for two sensitivity tests. Details of the Reference-case ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2009The methodology advanced by Brandão and Butterworth (2007 and 2008) for simulating catch sex sampling data in the process of computing lower confidence bounds for the abundance of the West Greenland minke whale population is applied to the ...Read more
Author:Brandão, Anabela; Butterworth, Doug SDate:2014Updated standardisation options are presented to account for the change in the vessels operating in the fishery after 2008, and the month effect is investigated as it may provide a useful basis to assist quantify the extent of cetacean depredation.Read more