Résultats de la recherche
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AMLR Hydroacoustic Survey System Description of Methods, A Case Study
blocks of area and finally a total estimate of abundance and statistical confidence limits about the ... block estimates and the total biomass in the surveyed area. The process depends on: 1) a calibrated ... , towed hydroacoustic system; 2) real-time analysis of data; and 3) using a structured database which ... Survey System Description of Methods, A Case Study Approval: Approved ...
Meeting Document : WG-KRILL-89/10 : Auteur(s): M.C. Macaulay (USA)
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Results of the research fishing activities conducted by Chile in Management A of Subarea 48.3 from 2005–2008: the importance of conserving the big older fishes
Abstract: This research makes a contribution to the Agenda Item 8 of the WG-FSA. (Biology ... Dissostichus eleginoides (TOP) from the Area management A (subarea 48.3), after 4 year of closure (2004 to 2008 ... fish caught, at a mean rate of approximately 1 kg per year/per individual. This result suggests that ... conducted by Chile in Management A of Subarea 48.3 from 2005–2008: the importance of conserving the big ...
Meeting Document : WG-FSA-10/35 : Auteur(s): C.A. Moreno and P. Rubilar (Chile)
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Expanding Antarctic seabird monitoring in east Antarctica using a remote camera network: potential use for monitoring for feedback management
monitor using traditional methods. Remotely-operating time-lapse cameras offer a tool for cost-effective ... made at sub-optimal times, and (5) through a network of cameras, quantify spatio-temporal variation in ... these parameters. By establishing a network of cameras at seabird breeding colonies across east ... Antarctica using a remote camera network: potential use for monitoring for feedback management Approval ...
Meeting Document : WG-EMM-14/27 : Auteur(s): C. Southwell and L. Emmerson (Australia)
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Recommendations from a cross-sector workshop on krill fishing and conservation in the Scotia Sea and Antarctic Peninsula region
Abstract: In June 2014, the ICED programme, the British Antarctic Survey and WWF co-hosted a two ... workshop. There is broad cross-sector commitment to maintaining a healthy ecosystem and support for ... . This accord could be strengthened by articulating a clear research and development strategy to support ... from a cross-sector workshop on krill fishing and conservation in the Scotia Sea and Antarctic ...
Meeting Document : WG-EMM-14/12 : Auteur(s): S. Hill, R. Cavanagh, R. Downie, C. Knowland and S. Grant (United Kingdom)
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Preliminary assessment of Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a survey in May 2002
Abstract: A survey of Patagonian toothfish, Dissostichus eleginoides, was undertaken in Division ... -term annual yield in the 2002/2003 CCAMLR season and beyond. This paper provides a preliminary ... assessment of yield using the assessment methods of CCAMLR, a summary of which is presented here. The ... the remainder of the season. Thus, a revision of the assessment provided here is expected to be needed ...
Meeting Document : WG-FSA-02/70 : Auteur(s): A.J. Constable, R. Williams and T. Lamb (Australia)
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On influence of acoustic survey methodology improvement on krill biomass estimation. (A comparison of results of acoustic surveys based on single-frequency and double-frequency algorithms)
species identification realized by single-frequency and double-frequency algorithms could cause a marked ... difference in krill biomass estimates. A difference was more than 1.8 times in the case under consideration ... . Judging from significant differences in biomass estimates attributed to only introducing a new method of ... have a considerable influence on biomass estimates obtained. Therefore. it is expected that the ...
Meeting Document : WG-EMM-01/41 : Auteur(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Revision of biological and population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a comprehensive survey of fishing grounds and recruitment areas in the region
Abstract: Based on a survey of Dissostichus eleginoides in the Heard Island region in April 1999 ... originally estimated and that, in recent years, there has been an influx of a large number of young fish ... compared to the period during the first surveys in the early 1990s. A notable outcome of the 1999 survey is ... region. Careful thought will need to be given to how best to manage a stock that aggregates in this ...
Meeting Document : WG-FSA-99/68 : Auteur(s): A.J. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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FIELD IDENTIFICATION GUIDE TO HEARD ISLAND AND MCDONALD ISLANDS (HIMI) BENTHIC INVERTEBRATES: A GUIDE FOR SCIENTIFIC OBSERVERS ABOARD FISHING VESSELS
Abstract: At CCAMLR-XXVI the Working Group on Fish Stock Assessment (WG-FSA) noted a lack of ... to Heard Island and McDonald Islands (HIMI) benthic invertebrates: a guide for scientific observers ... intended for use as both a training tool, and at-sea by trained observers, to make accurate identifications ... similar guides for training purposes and at-sea use by observers in other CCAMLR designated fisheries, a ...
Meeting Document : SC-CAMLR-XXVIII/BG/12 : Auteur(s): Delegation of Australia
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ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT
. eleginoides tag returns in 2008/09, bringing the total from all seasons up to 54 tag recaptures; 4. A total of ... a limited number of cohorts. 7. CASAL confirms that the vulnerable biomass is dominated by a single ... simple Petersen and local CPUE estimates, with a B0 of 1143 t and B2009/B0 of 85%. 9. The sustainable ... DATA FROM A FOUR-YEAR TAGGING EXPERIMENT Approval: Approved ...
Meeting Document : WG-FSA-09/17 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)
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FURTHER DEVELOPMENTS OF A SIMULATION MODEL, ‘PATCH’, FOR EVALUATING MANAGEMENT STRATEGIES TO CONSERVE BENTHIC HABITATS (VULNERABLE MARINE ECOSYSTEMS) WHICH ARE POTENTIALLY VULNERABLE TO IMPACTS FROM BOTTOM FISHERIES
habitats. Noting the paucity of data on the ecology of these habitats, this paper further develops a ... requirement can be translated into a simple operational objective: Maintain the quality of habitats above the ... ”, a categorisation fraught with difficulty. Instead, it means that habitats for which this would not ... uncertainties to be captured in a straight-forward manner to assist CCAMLR in maintaining its precautionary ...
Meeting Document : WG-FSA-09/42 : Auteur(s): A.J. Constable (Australia)