Search results
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Extension to the krill-predator modelling exercise
Abstract: The krill-predator modelling calculations of Thomson and Butterworth (1995) are ... extended to take account of a number of the suggestions made at the 1995 meeting of the CCAMLR Working ... Group on Ecosystem Monitoring and Management. The resilience of the Antarctic fur seal population to ... krill harvesting is found to be strongly dependent on the estimate of the maximum annual growth rate (R ...
Meeting Document : WG-EMM-96/67 : Author(s): Thomson, R.B., Butterworth, D.S.
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Preliminary results from a krill net sampling survey in CCAMLR Area 48.1 in 1989/90 season
occurred NE and SE of Elephant Island, north of the South Shetland Islands, in the central Bransfield ... estimated stock biomass of 950,000 tonnes. The zooplankton, however, was dominated by salps in the entire ... region. The krill stock consisted of subadult and adult stages. Nain concentrations of gravid females ... were detected north of the South Shetland Islands. No spawning occurred in the Bransfield Strait and in ...
Meeting Document : SC-CAMLR-IX/BG/09 Rev. 1 : Author(s): Delegation of EEC
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Beach debris survey - Main Bay, Bird Island, South Georgia 1993/94
Abstract: The fourth year of survey of beach debris at Main Bay, Bird Island reported a 20 ... ). Debris accumulated throughout the summer accounted for only 16% of the total (a similar proportion to ... that in 1992/93). Of the winter debris, 60% occurred in September, following severe gales. Nylon line ... , comprising 77% of debris, was mainly identical to material used in the long-line fishery, as indicated by ...
Meeting Document : CCAMLR-XIV/BG/10 : Author(s): Delegation of the United Kingdom
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Krill catch distribution in relation to predator colonies 1987 to 1992
Abstract: The distribution of krill catches in relation to land-based predator colonies ... , calculated from CCAMLR fine-scale data, is shown for Subareas 48.1 and 48.2. The pattern of catches in 1992 ... is similar to that seen for other years, with 70% of the total catch from Subarea 48.1 being taken ... within 100 km of colonies and between the months of December to March inclusive (the ‘critical period ...
Meeting Document : WG-KRILL-93/10 : Author(s): Secretariat
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Data on krill, Euphausia superba Dana, consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
Abstract: Basing on the materials of complex study of the Kosmonavtov and Sodruzhestva Seas ... fishes as its main consumers in the above areas. According to the data of trawlings in the depth range of ... E.superba consumption not only for the region of the Kosmonavtov and Sodruzhestva Seas as a whole, but at ... coastal fish diet may make up to 9-18% of annual production of this crustacean. Author(s): Delegation of ...
Meeting Document : SC-CAMLR-X/BG/11 : Author(s): Delegation of USSR
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Incidental mortality arising from fisheries activities around Kerguelen Island (Division 58.5.1)
Abstract: Causes of incidental mortality owing to fisheries activities around Kerguelen (Division ... experimental long-lining cruise in deep waters at the shelf edge also showed the potential impact of this type ... of fishery if it develops in the Indian Ocean sector of the Southern Ocean. Trammel net fishing for ... research purposes in the coastal zone does not present any real danger for populations of marine birds and ...
Meeting Document : SC-CAMLR-X/BG/14 : Author(s): Delegation of France
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Report on bottom fisheries and vulnerable marine ecosystems: draft template and workplan
Abstract: The WG-FSA Subgroup on VMEs was tasked with providing a draft template of a Report on ... . The structure aims to follow the logic of the fishery reports already provided by WG-FSA: (i) Status ... of the fisheries, (ii) Knowledge on the fish stocks, (iii) Methods, (iv) Assessments of status and ... of VMEs, resulting in the following structure to replicate that approach: (i) Details of Bottom ...
Meeting Document : WG-EMM-10/15 : Author(s): WG-FSA Subgroup on VMEs
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... reference case resulted in a much higher estimate of initial biomass, though this appeared to be almost ... entirely due to the impact of the catch-at-age data from the shelf fishery. Parameterising the model to ... better explain these data resulted in estimates of initial and current biomass that were very similar to ...
Meeting Document : WG-FSA-06/60 : Author(s): A. Dunn and S.M Hanchet (New Zealand)
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Coordinating approaches to incidental mortality arising from fisheries
Abstract: Globally, by-catch is recognised as one of the most significant issues affecting ... fisheries management. The Commission for the Conservation of Antarctic Marine Living Resources (the ... indirect impacts of harvesting on non-target taxa. There are many approaches to reduce by-catch. Current ... approaches to managing by-catch focus on by-catch avoidance and mitigation measures, setting of precautionary ...
Meeting Document : WG-FSA-03/71 : Author(s): A.J. Constable, C. Davies, A.T. Williamson, R. Williams and E. van Wijk (Australia)
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The Generalised Yield Model version 5: structure, specifications and examples for validation
Abstract: The Generalised Yield Model (GYM) was first developed in 1995 as a generalised form of ... catches set by a proportion of an estimate of pre-exploitation biomass (as in krill), a specified catch in ... the units of biomass and relative to the recruitment parameters (as in toothfish) or according to a ... version of GYM (Version 5.01b) differs from earlier versions in 2 main ways: (i) improved storage of ...
Meeting Document : WG-FSA-SAM 03/14 : Author(s): A. Constable (Australia)