Résultats de la recherche
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Further calculations of the effects of krill fishing on predators
Abstract: Earlier initial modelling attempts by the authors are extended to consider the ... achieved by making the survival rates depend instead on krill "availability", where there is a ... random component in the relationship between krill biomass and availability. An examination of the ... consequences in the case of the blackbrowed albatross suggest that these other factors result in yet lesser ...
Meeting Document : WG-Krill-94/24 : Auteur(s): D.S. Butterworth and R.B. Thomson (South Africa)
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
Abstract: The waters in the vicinity of the South Shetland Islands and Elephant Island were ... surveyed to investigate mechanisms for the formation of krill concentrations and to estimate acoustic ... biomass of krill in the 1990/91 austral summer. Main krill concentrations occurred in the shelf waters ... north of the islands, as usual. Tracks of drifting buoys (with curtain drogues at 30 m depth where krill ...
Meeting Document : WG-KRILL-91/22 : Auteur(s): Delegation of Japan
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Further development of the fishery plans
Abstract: The Secretariat has been developing Fishery Plans under the Regulatory Framework ... established by the Scientific Committee and Commission. In recent years, Plans have been drafted for the krill ... /6). Each Fishery Plan draws together the history of management measures and fishery requirements ... agreed by the Commission, as well as key operational information for each fishery. In 2004, the ...
Meeting Document : WG-FSA-SAM-04/04 : Auteur(s): Secretariat
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates
Abstract: A reliable commercial tagging program is critical to the successful management by ... CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... been thus far inconclusive because the confounding effect of factors such as time and location of ... , by controlling for the spatial and temporal confounding factors using a case-control study design, we ...
Meeting Document : WG-FSA-12/47 Rev. 1 : Auteur(s): S. Mormede and A. Dunn (New Zealand)
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Developing the Secretariat’s data management systems
Abstract: The CCAMLR Secretariat’s data management systems provide the secure infrastructure and ... repository for CCAMLR data which are submitted by CCAMLR Members to support the policy, scientific and ... administrative work of the Commission and Scientific Committee. These systems are being redeveloped as part of a ... long-term program of work which started in 2013. The work has focused on the development of structural ...
Meeting Document : SC-CAMLR-XXXV/BG/25 Rev. 1 : Auteur(s): CCAMLR Secretariat
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Preliminary proposal for designation an Antarctic Specially Protected Area in the Argentine Islands Archipelago and nearby Graham Coast Antarctic Peninsula region
Abstract: Ukraine is planned to establish the Antarctic Specially Protected Area (ASPA) at the ... region of Argentine Islands Archipelago, adjacent islands of the Wilhelm Archipelago and costal oases of ... nearby Graham Coast Antarctic Peninsula (short abbreviation – AIGC ASPA). This ASPA will include the ... terrestrial area with marine component, which consists of inter-island water areas within the central group of ...
Meeting Document : SC-CAMLR-38/BG/21 Rev. 1 : Auteur(s): Delegation of Ukraine
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Extending the time series of catch-weighted length frequencies
Abstract: The standard procedure used to extract catch-weighted length frequencies can only make ... use of CCAMLR data for D. eleginoides in Subarea 48.3 collected in the seasons 1992/93 and from 1994 ... /95 onwards. The procedure cannot use the earlier data collected between 1984/85 and 1991/93, and data ... from 1993/94 because of a mismatch in Flag State which presently occurs between the length and catch ...
Meeting Document : WG-FSA-SAM-06/04 : Auteur(s): David Ramm & Lydia Millar
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 and 88.2 up to 2005/06
Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... and 88.2 since 2001 is presented. The paper updates and revises tag-release and tag-recapture data ... which were presented in July 2006 at WG-FSA-SAM. In addition, the paper presents release and recapture ... data for non-New Zealand vessels for the 2005-06 season for the first time. However, tag data were ...
Meeting Document : WG-FSA-06/34 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
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Proposal for the removal of night setting requirement for autoline vessels fishing in Division 58.5.2
fishing in Division 58.5.2 to occur at any time of the day/night cycle. The proposal forms part of an ... adaptive approach to management, which considers the risk status of the fishery, knowledge on the ... effectiveness of mitigation measures, mitigation performance record of the vessel, seabird mortality levels and ... assessment of the likely effects of individual mitigation measures to total mitigation response. Since the ...
Meeting Document : WG-FSA-04/73 : Auteur(s): G. Robertson and B. Baker (Australia)
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Results of an acoustic investigation of Antarctic krill, Euphausia superba, biomass-density in the Elephant Island area in January/February 2001
Abstract: Results from an acoustic krill survey in the Elephant Island Area carried out Jan 27th ... installed on the R/V “Polarstern”. The collected acoustic data were post-stratified in three strata based on ... demographic results obtained by net sampling. Data files from the 38 kHz and 120 kHz recordings were prepared ... and processed according to protocols used for the CCAMLR 2000 Synoptic Survey. An average biomass ...
Meeting Document : WG-EMM-02/30 : Auteur(s): M.A. Thomasson (Sweden), J.H. Emery (USA), J. Rademan (South Africa), R.P. Hewitt (USA) and B.I. Bergström (Sweden)