Résultats de la recherche
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Integration of CPUE data into assessments using the generalised yield model
Abstract: For the last 3 years, WG-FSA has accorded high priority to development of a method to ... integrate different indicators of stock status into assessments using the generalised yield model (GYM). In ... this paper, we propose a method, based on use of the sampling/importance-resampling algorithm, for ... incorporating information on trends in standardised CPUEs into GYM assessments. The use of the method is ...
Meeting Document : WG-FSA-00/39 : Auteur(s): G. Kirkwood (United Kingdom) and A. Constable (Australia)
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Biology and harvesting of Dissostichus eleginoides around Kerguelen Island (Division 58.5.1)
of the Southern Ocean. In Division 58.5.1, a directed trawl fishery has been in operation since 1984 ... /85 and has expanded in the deep western sector of the Kerguelen shelf. This fishery harvests the sub ... -adult/adult part of the stock. Fishing effort and corresponding catches are very variable from one year ... to another and highly dependent on the harvestable resources of C. gunnari. Vital biological ...
Meeting Document : WG-FSA-91/09 : Auteur(s): G. Duhamel (France)
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High densities of pterobranchs and sea pens encountered at sites in the South Orkney Islands (Subarea 48.2): two potential VMEs
Abstract: High densities of pterobranchs (Phylum Hemichordata: Class Pterobranchia) and sea pens ... encountered at sites on the shelf of the eastern South Orkney Islands. The details of these encounters ... , utilizing occurrence and abundance in bottom trawl catches, are provided. The distributions of standardized ... densities for these taxa reveal at least one station location for each taxa with anomalously high levels of ...
Meeting Document : WG-EMM-10/14 : Auteur(s): S.J. Lockhart and C.D. Jones (USA)
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Intra-archipelago moult dispersion of southern elephant seals at the Prince Edward Islands, southern Indian Ocean
), 38 of which could be individually identified by resighting their tag numbers. The majority of the MI ... . The attendance rate of the known individuals at their natal island during the annual moult was only 40 ... PEI, and 80 ± 4% for the simulation. Seasonal and annual absences of seals from MI violate the ... ‘homogeneity of capture’ assumption of mark–recapture models. When multiple sightings during any year are ...
Meeting Document : WG-EMM-10/P16 : Auteur(s): W.C. Oosthuizen, M.N. Bester, P.J.N. de Bruyn and G.J.G. Hofmeyr
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Lessons from CCAMLR on the implementation of the ecosystem approach to managing fisheries
Abstract: The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is ... can be developed to decide on spatial management strategies for fisheries so that predators of target ... species are not disproportionately affected as a result of spatial and/or temporal dependencies of ... assessing the status of target species and their predators, but also in designing cost-effective management ...
Meeting Document : WG-EMM-12/P06 : Auteur(s): A.J. Constable
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Analysis of anomalous CPUE data from data-poor exploratory fisheries
context to the more variable and anomalously high CPUEs of the two Korean ships the Insung No. 2 and the ... Insung No. 7 while participating in CCAMLR exploratory fisheries. The operational characteristics of ... mean and high variability, arising from periods of repeated low/zero catches and highly spatially and ... Delegation of the Republic of Korea Title: Analysis of anomalous CPUE data from data-poor exploratory ...
Meeting Document : WG-FSA-12/07 : Auteur(s): Secretariat and Delegation of the Republic of Korea
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Chronology of previously submitted scientific documents, and updated maps and analyses supporting MPA planning in the Ross Sea region
CCAMLR and iteratively updated since 2012 consistent with Scientific Committee advice. The purpose of ... iterations of this proposal; and 3) update relevant maps, figures and analyses from previously submitted ... scientific papers to reflect the boundaries of the current MPA proposal and with updated fishery data, to ... assist evaluation of the current proposal. Author(s): Delegations of New Zealand and the USA Title ...
Meeting Document : SC-CAMLR-XXXIII/BG/23 Rev. 1 : Auteur(s): Delegations of New Zealand and the USA
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2013–14
Abstract: This report summarises the timing, depth, and location of fishing together with the ... biological aspects and catch of Antarctic toothfish up to an including the 2014 season. In 2014, the Ross Sea ... 12 years with a slight decline in the past two years. Length frequency distributions of Antarctic ... strong mode of smaller (90–120 cm TL) toothfish present in the Slope fishery from 2010–2013 was not ...
Meeting Document : WG-FSA-14/52 : Auteur(s): M. Stevenson, S. Hanchet, S. Mormede and A. Dunn (New Zealand)
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Measurement of capacity in CCAMLR exploratory fisheries in Subareas 88.1 and 88.2: Secretariat update 2015
Abstract: This paper presents an update of the metrics of capacity and capacity utilisation ... and do not indicate an excess capacity in the fishery. A measure of potential daily fishing capacity ... as a function of the catch limit for an area indicates that for some management areas the notified ... fishing capacity is in excess of the level that would allow the Secretariat to forecast and issue a ...
Meeting Document : WG-FSA-15/09 : Auteur(s): CCAMLR Secretariat
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Assessment of the Patagonian Toothfish (D. eleginoides) in Subarea 48.3
Abstract: Assessment of the Patagonian toothfish (D.eleginoides) in Subarea 48.3 indicates that ... the current status of the stock is at 52% of B0. Spawning biomass has been increasing in recent years ... catch limit set at around 2,750 tonnes would be expected to keep the stock at or above 50% of B0 after ... 35 years with 50% probability, with less than 1% probability declining below 20% of B0 and would ...
Meeting Document : WG-FSA-15/59 : Auteur(s): T. Earl, M. Soeffker and C. Darby (United Kingdom)