Resultados de la búsqueda
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Update on the external review of the Generalised Yield Model (GYM) software and manual
WG-FSA-SAM at its meeting in July 2004; • WG-FSA-SAM to consider the review and advise WG-FSA. A call ... of opportunity for conducting a review before the 2004 meeting of WGFSA-SAM passed. As a way forward ... external review of GYM. The Secretariat could then send a new call for tenders in August 2004. Members ... the outcome of this process and secure appropriate funding for a review in 2005. Author(s): CCAMLR ...
Meeting Document : WG-FSA-SAM-04/05 : Autor(es): CCAMLR Secretariat
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Results of trials undertaken around Crozet Island using pots to target Patagonian toothfish
Abstract: Patagonian toothfish (Dissostichus eleginoides) is the target species of a bottom ... accidental bird mortality. In order to find a solution to these issues a 25-day pot trial cruise was ... conducted on board vessel Austral Leader II from January 22nd to February 17th 2010 with a period of ... in fishing efficiency and in their by catch. Crab by-catch was identified as a major issue which ...
Meeting Document : WG-FSA-10/10 : Autor(es): N. Gasco, P. Tixier and C. Guinet (France)
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Connectivity and population structure in Pleuragramma antarcticum along the west Antarctic Peninsula
simulations using a circulation model. Differences in length distributions and maturity suggested two discrete ... Marguerite Bay, with no mixing between. The presence of a single length mode at Charcot Island and Marguerite ... Bay corresponding to the year class found during GLOBEC 2001 suggested a dominant cohort and no local ... , without similar collapses to the north and south, suggest a third population in the central WAP. Analyses ...
Meeting Document : WG-FSA-10/16 : Autor(es): J. Ashford, J. Ferguson, A. Piñones, J. Torres and W. Fraser
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LENGTH-BASED ASSESSMENT FOR MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUB-AREA 48.3
projects these numbers forward under the given harvest control rule to set a two‐year TAC. One issue is the ... accurate identification of age cohorts from the survey data. In this paper we describe a length‐based ... approach that removes the problem of cohort determination. A stratified bootstrap technique (consistent ... the population numbers‐at‐length. A comparison of this method and the existing age‐based CMIX/GYM ...
Meeting Document : WG-FSA-09/27 : Autor(es): R.M. Hillary (Australia), C.T.T. Edwards, R.E. Mitchel and D.J. Agnew (United Kingdom)
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Population assessment of Patagonian toothfish in Subarea 48.4
Subarea 48.4. The Subarea is divided into two management regions and assessed using a CASAL assessment of ... D. eleginoides in the northern region and a simple Petersen biomass estimate derived for D ... has been retained although a small number of changes have been made to try to improve the fit of the ... model and to reduce the dependency on a relatively small amount of data. These changes comprise the ...
Meeting Document : WG-FSA-12/36 : Autor(es): R. Scott (United Kingdom)
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Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2014–15
Subareas 88.1 and 88.2 through the 2015 season. A total of 44 827 Antarctic toothfish have been released ... catch in the Ross Sea region. Tag recapture data showed that most fish are recaptured only a short ... distance from their point of release, typically less than 100 km. However, a small proportion of tagged ... in 2015, close to the recent average. SSRU 88.2H showed a similar annual number of tag returns ...
Meeting Document : WG-FSA-15/37 : Autor(es): S.J. Parker and S. Mormede (New Zealand)
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High-resolution ocean modelling of the South Georgia and South Orkney Islands regions
South Orkney Islands is highly productive, with a history of commercial exploitation. Many of the key ... regions. The models are regional applications of NEMO with a ~3 km horizontal resolution, and include key ... reanalysis, a seasonal glacial melt cycle, and with sea ice processes incorporated using LIM3. The models ... will be used to generate a ~20 year time series of oceanographic flows and water mass properties, which ...
Meeting Document : WG-EMM-16/15 : Autor(es): E. Young, E. Murphy and P. Trathan
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Developing robust biomass estimates and advice on catch limits in research blocks
different biomass estimates be provided. In this paper, we develop a modified CPUE by seabed area method ... by the stock assessment model as the reference biomass. We demonstrate evidence of a linear ... density estimates from Shelf/Slope and North habitat types from the Ross Sea can be used to estimate a ... CPUE by seabed area biomass in designated research blocks. We also develop a Bayesian approach that ...
Meeting Document : WG-SAM-17/37 : Autor(es): S.J. Parker, S. Mormede, A. Dunn, S.M. Hanchet and C. Marsh
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Report to the Scientific Committee for the Conservation of Antarctic Marine Living Resources on the outcomes of the EU-H2020 Project ‘Mesopelagic Southern Ocean Prey and Predators (MESOPP)’ and its utility to SC-CAMLR
EU and Australia through two implementation actions Propose a R&D roadmap to support a large ... enhancement of collaborations by eliminating various obstacles in establishing a common methodology and a ... models. It will also contribute to a better predictive understanding of the SO based on furthering the ...
Meeting Document : SC-CAMLR-38/BG/30 : Autor(es): A.J. Constable, P. Lehodey and P. Koubbi
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Best practice seabird by-catch mitigation for Spanish-rig longline vessels with emphasis on line weighting regimes
Abstract: The Spanish system is used in a range of demersal and semi-pelagic longline fisheries ... throughout the southern hemisphere and has been the source of a large number of seabird fatalities. An ... experiment was conducted on a chartered Spanish-rig vessel to improve the sink rate of longlines to reduce ... determined by time-depth recorders attached to lines. Separately, a trial was conducted to determine ...
Meeting Document : WG-FSA-06/22 : Autor(es): G. Robertson (Australia), C.A. Moreno (Chile), B. Wienecke (Australia), P. Gandini (Argentina), G. McPherson (Australia) and J.-P. Seco Pon (Argentina)