Search results
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Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL
) which models the annual tag shedding (i.e. loss) rate as a constant for individual tags. The CASAL ... software applies this model correctly for fish released with a single tag but does not have the facility at ... , as a function of time at liberty. This over-estimation is shown to be significant and the ... a large sample of recaptures of fish released in the Heard and MacDonald Island (HIMI) (Division ...
Meeting Document : WG-SAM-11/12 : Author(s): S.G. Candy (Australia)
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Evaluation of de la Mare’s composite standardised index for generating a simple time-series summary of many long-term datasets on Antarctic predators: consequences of missing values and criteria for inclusion of predator parameters
Abstract: In 1997, de la Mare presented a statistic (labelled the Composite Standardised Index at ... the Workshop on Area 48) to WG-EMM for generating a simple time-series index of many long-term ... datasets on Antarctic predators. The value of the index in a given year is dependent on the specific ... correlated the parameters are to each other. This paper reports on a Monte Carlo simulation study that helps ...
Meeting Document : WG-EMM-98/45 : Author(s): A. Constable (Australia)
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A preliminary model-based approach for estimating natural mortality of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region
Abstract: Natural mortality (M) is a key parameter in fisheries stock assessments, relating ... directly to the productivity of a stock, stock status, and estimated precautionary yields. In the Ross Sea ... the stock assessment model. We undertake a preliminary investigation of estimating natural mortality ... using the assessment model from the Ross Sea region from 2017. We estimated natural mortality as a ...
Meeting Document : WG-SAM-2019/04 : Author(s): B. Moore, S. Mormede, S. Parker and A. Dunn
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A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ
reviewed briefly. It is characterised by very large illegal catches and a sharply declining longline CPUE ... trend. Application of a simple age-structured production model provides robust indication that the ... spawning biomass has been depleted to at most a few percent only of its pre-exploitation level. Projections ... are discussed. Author(s): A. Brandão, B.P. Watkins, D.S. Butterworth and D.G.M. Miller (South Africa ...
Meeting Document : WG-FSA-01/54 : Author(s): A. Brandão, B.P. Watkins, D.S. Butterworth and D.G.M. Miller (South Africa)
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PECHEKER-SIMPA – A tool for fisheries management and ecosystem modeling
Abstract: Biodiversity studies produce a large amount of data. Few are well-documented, compiled ... , readily available and easily accessible. The development of a specific database for the Kerguelen Plateau ... . SIMPA is a database which covers all data from MNHN scientific expeditions, collections and fisheries ... features of SIMPA, making it a desirable tool for fisheries management and ecosystem modeling in the region ...
Meeting Document : WS-MPA-11/P02 : Author(s): P. Pruvost, A. Martin, G. Denys and R. Causse
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An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
Abstract: Two Operating Models (OMs) reflecting an “Optimistic” and a “Pessimistic” current ... a constant future catch suggest that the two scenarios will only be qualitatively distinguished in ... for the “Pessimistic”, but not the “Optimistic” case. Accordingly the performance of a simple MP ... to secure a faster increase in the TAC for the “Optimistic” case, and some recovery in abundance for ...
Meeting Document : WG-FSA-SAM-06/12 : Author(s): A. Brandão and D.S. Butterworth (South Africa)
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A revision of yield and catch controls for managing the mackerel icefish (Champsocephalus gunnari) fishery in the vicinity of Heard Island and McDonald Islands
Abstract: A recent 2000 survey of mackerel icefish in the vicinity of Heard Island enabled a ... previous years, it is dominated by a strong age 2 year class. Estimates of yield for the Heard Island ... fishing seasons. The results of the 2000 survey confirm the need to retain a closure to fishing on Shell ... to enter the fishery prior to assessments occurring. Author(s): A. Constable, R. Williams, T. Lamb ...
Meeting Document : WG-FSA-00/41 : Author(s): A. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2015
the development of a marine protected area in the Weddell Sea planning area. In accordance with the ... /BG/15, /BG/16 and /BG/17). The Scientific Committee is invited to note that: Parts A and B of this ... , preliminary version 2015). A further developed document will be presented to WG-EMM in 2016 with a view for ... information contained in Parts A and B represent best available science. Author(s): Delegation of Germany ...
Meeting Document : SC-CAMLR-XXXIV/13 : Author(s): Delegation of Germany
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Recommendation to commence discussions on a way to plan and organise the work of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR)
approaches to give adequate attention to issues, CCAMLR has found it a challenge to progress many of these ... Commission initiate discussions on this topic, including by considering options for undertaking a priority ... options, including proposals for a priority-setting exercise, with a view to the Commission agreeing on a ... on a way to plan and organise the work of the Commission for the Conservation of Antarctic Marine ...
Meeting Document : CCAMLR-XXXIV/18 : Author(s): Delegation of Australia
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A review of national observer training and education programs (Scheme of International Scientific Observation)
program and the application of observer requirements could be improved by adopting a standard approach to ... education and training for observers in these fisheries (SC-CAMLR-XXV, paragraph 2.11). A review of current ... Secretariat believes that in order to achieve a consistent approach to education and training for scientific ... observers, Members would need to: further develop and agree upon a set of training and education standards ...
Meeting Document : SC-CAMLR-XXVI/BG/09 Rev. 1 : Author(s): Secretariat