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Browsing by Author "Brandão, Anabela"

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2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2006 The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and Butterworth (2005) that permitted annual fluctuations about a deterministic stockrecruitment relationship is updated to take account of further catch, GLM ... Read more
2007 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2006 The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and Butterworth (2006) that permitted annual fluctuations about a deterministic stock-recruitment relationship is updated to take account of further catch, GLM ... Read more
Abalone poaching confiscation numbers and trends for Zones A-D updated to include data until 2009

Author: Brandão, Anabela Date: 2009 Poaching confiscation data have been updated using all data currently available until the third quarter of 2009. The data have been reworked in terms of a standard Model year y that is taken to run from October of year y-1 to September of ... Read more
Age-Structured Production Model (ASPM) assessments of the Alfonsino (Beryx splendens) resource in the SIOFA area of the Southern Indian Ocean

Author: Brandão, Anabela ; Butterworth, Doug ; Johnston, Susan Date: 2020 An Age-Structured Production Model is applied to assess the Alfonsino (Beryx splendens) resource in the West and East SIOFA areas of the Southern Indian Ocean. Data limitations restrict these applications to deterministic variants, which ... Read more
Age-structured production model assessments and projections including updated parameters to model the intermittent aggregation of Namibian orange roughy

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2007 Updated assessments of the four orange roughy aggregations off Namibia, based upon a maximum penalised likelihood approach which uses all available indices of abundance and reflects the proportion of a stock present at the fishing aggregation ... Read more
Alternative structural models for the Northeast Chatham Rise orange roughy fishery

Author: Butterworth, Doug S ; Brandão, Anabela Date: 2006 A particular difficulty with assessments of the Orange Roughy resource on the Northeast Chatham Rise is the seeming inability of standard population models, with their standard assumptions of a linear relationship between CPUE and survey ... Read more
Analyses of the fisheries independent monitoring survey data of the rock lobster resource of South Africa to include the 2011/12 season

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2012 Analyses of FIMS data are updated to include data for the 2011/12 season. Results show a drop in the last season’s index for the FIMS relative abundance indices in the Dassen and Lambert’s Bay Zones but there is an increase for Cape Point ... Read more
Analyses of the Fisheries Independent Monitoring Survey data of the rock lobster resource of South Africa to include the 2012/13 season

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2013 Analyses of FIMS data are updated to include data for the 2012/13 season. Results show a drop in the last season’s index for the FIMS relative abundance indices in the Dassen, Lambert’s Bay and Saldanha Bay Zones. Although the index for ... Read more
Analysis of tagging data of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

Author: Brandão, Anabela ; Butterworth, Doug S Date: Mar 2018 Some simple analyses of the tag-recapture data available for the PEI toothfish resource are undertaken. Somatic growth rate seems to be less than that in Subarea 48.3 which has previously been assumed for assessments of the PEI resource. ... Read more
Application of a photo-identification based assessment model to southern right whales in South African waters

Author: Brandão, Anabela ; Butterworth, Doug S ; Müller, Andrea ; Best, Peter B Date: 2012 The three-mature-stages (receptive, calving and resting) model of Cooke et al. (2003) is applied to photo-identification data available from 1979 to 2010 for southern right whales in South African waters. The 2010 number of females having ... Read more
Application of a photo-identification based assessment model to southern right whales in South African waters, now including data up to 2012

Author: Brandão, Anabela ; Butterworth, Doug S ; Ross-Gillespie, Andrea ; Best, Peter B Date: 2013 This paper extends the analyses of Brandão et al. (2012) which applied the three-mature-stages (receptive, calving and resting) model of Cooke et al. (2003) to photo-identification data available from 1979 to 2010 for southern right whales ... Read more
Application of lognormal and delta-lognormal linear models to standardise CPUE abundance indices (1994 to 2002) for orange roughy off Namibia

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2003 GLM analyses are used to standardise the CPUE data for Namibian orange roughy. The possibility of there being a “learning” period of lower CPUE for a new vessel when it enters the fishery is taken into account. Alternative statistical approaches ... Read more
Assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity to include data from 1997 to 2013

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2013 The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and Butterworth (2007) that permitted annual fluctuations about a deterministic stockrecruitment relationship is updated to take account of further catch, GLMM ... Read more
Assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity to include data from 1997 to 2013, including tag-recapture data

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2014 The assessment of the Prince Edward Islands (PEI) toothfish (Dissostichus eleginoides) resource carried out by Brandão and Butterworth (2013) is updated to take into account further data available for 2013 and a revised CPUE standardisation ... Read more
Assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity to include data from 1997 to 2017

Author: Brandão, Anabela ; Butterworth, Doug S Date: Oct 2018 The assessment of the Prince Edward Islands (PEI) toothfish (Dissostichus eleginoides) resource carried out by Brandão and Butterworth (2017) is updated to take further data now available for 2017 into account. This update also incorporates ... Read more
Back-tracking biomass estimates to 1932 using results from a "Replacement Yield" model fit to catch and survey data for the South Coast kingklip resource off South Africa for estimates of current status relative to MSY-related reference points

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2014 Back-tracking biomass values to 1932 for each posterior replicate of a Bayesian “Replacement Yield” model applied to the total annual catches and the survey abundance estimates for the South African kingklip resource off the South coast by ... Read more
Biopsying Southern right whales: their reactions and effects on reproduction

Author: Best, Peter B ; Reeb, Desray ; Rew, Mary Beth ; Palsbøll, Per J ; Schaeff, Cathy ; Brandão, Anabela Date: 2005 Collecting skin biopsies from large whales for genetic analysis is often subject to national permit, and in the case of cow-calf pairs, it may be prohibited. We present results of 906 biopsy attempts on southern right whales (Eubalaenaustralis) ... Read more
Concerning demographic limitations on the population growth rate of West Australian (breeding stock D) humpback whales

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2011 The upper bound of 0.126 on the maximum demographically possible annual growth rate for humpback whales that has standardly been imposed on recent applications of age-aggregated assessment models for this species in the IWC Scientific Committee, ... Read more
Concerning demographic limitations on the population growth rate of West Australian (breeding stock D) humpback whales

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2006 The upper bound of 0.126 on the maximum demographically possible annual population growth rate for humpback whales that is currently imposed on age-aggregated assessment models for this species, is based on an analysis that assumes steady age ... Read more
Conditioning of the Reference Set of Operating Models for the toothfish resource in the Prince Edward Islands vicinity

Author: Brandão, Anabela ; Butterworth, Doug S Date: 2019 Conditioning results for the Reference Set of Operating Models identified at a Task Team meeting and described in Brandão et al. (2019) are given. The assumptions that show more marked differences in the conditioning results from those of the ... Read more

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