Search results
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Proposal to strengthen monitoring and control of transhipments
gaps in the monitoring of transhipments. Currently, most of the transhipments in the Convention Area ... occur between vessels licensed to fish in the Convention Area and vessels of Non-Contracting parties ... (NCPs). The proposed amendments establish a CCAMLR Record of Carrier Vessels, which may include NCP ... vessels, and prohibit a Contracting Party vessel from transhipping inside the Convention Area with a ...
Meeting Document : CCAMLR-XXXV/24 : Author(s): Delegations of Australia and the USA
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Towards an ecological risk assessment of krill fishing in East Antarctica (CCAMLR Divisions 58.4.1 and 58.4.2)
Abstract: With the recommencement of commercial krill (Euphausia superba) fishing in CCAMLR ... Divisions 58.4.1 and 58.4.2, off the coast of East Antarctica, Australia is adapting the risk assessment ... framework used in Area 48 to assess the risks involved in any redevelopment of a krill fishery and evaluate ... whether the current management procedure has a high likelihood of achieving CCAMLR’s objectives in this ...
Meeting Document : WG-EMM-17/20 : Author(s): N. Kelly, M. Cox, L. Emmerson, S. Kawaguchi, B. Raymond, C. Southwell and D. Welsford
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Observer notes (Subarea 88.1)
bottom long-line sets in Subarea 88.1 from 15.12.03 till 10.03.04 are presented. For the first time ... Antarctic toothfish was found in long-line catches above seamounts of the Pacific-Antarctic Ridge to the ... cannot lead to their intbreeding as its gonads were at the early development stages in that period ... . Antarctic toothfish spawning takes place above the mountains of the Pacific-Antarctic Ridge, located ...
Meeting Document : WG-FSA-04/89 : Author(s): V.G. Prutko (Ukraine)
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Fish and invertebrate by-catch from Australian fisheries for D. eleginoides and C. gunnari in Division 58.5.2
Islands in CCAMLR Statistical Division 58.5.2. These comprise a trawl and a longline fishery for the ... gunnari. This paper presents available by-catch information for the three fisheries including estimates of ... . Preliminary results from a rajid tagging program are also presented. Total removals of by-catch in the trawl ... caught in the D. eleginoides trawl fishery and 107 tonnes in the C. gunnari trawl fishery. These values ...
Meeting Document : WG-FSA-03/73 : Author(s): E.M. van Wijk and R. Williams (Australia)
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Uncertainty in echosounder calibrations
Abstract: Calibration of echo sounders for fish stock assessment are commonly performed using the ... standard sphere method (Johannesson and Mitson, 1983; Simmonds et al., 1984). To determine the accuracy of ... the method, direct measurements of target strength (TS) were made of three standard spheres (Copper ... (Cu)- 23.0 mm and tungsten carbide (WC)- 33.0 mm and 38.1 mm). At the best case range of 5 m, the TS ...
Meeting Document : WG-EMM-96/40 : Author(s): Soule, M.A., Demer, D.A.
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Towards a strategic framework for assessing uncertainty in ecosystem dynamics models: objectives are sensitive too
candidate feedback management approaches for the Antarctic krill fishery in the southern Drake Passage and ... Scotia Sea. The Foosa ecosystem dynamics model was developed to perform spatially resolved, stochastic ... simulations of krill, its predators and fishery. It has been used to provide advice on the spatial allocation ... of the precautionary catch limit for krill. Foosa might therefore be a suitable simulation platform ...
Meeting Document : WG-EMM-12/20 Rev. 1 : Author(s): S. Hill and J. Matthews (United Kingdom)
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Mitigation of Macrourus by-catch in research block 58.4.1_6 and estimation of Macrourus biomass and sustainable catch in Divisions 58.4.1 and 58.4.2
Abstract: Macrourus spp. are the major by-catch species in the exploratory toothfish fishery in ... ) avoidance, ii) mitigation and iii) the setting of sustainable by-catch limits if mortality is not ... preventable (SC-CAMLR-XXII, paragraph 5.230). Here, we undertake a risk assessment of the effects of ... block 58.4.1_6 in particular. We investigate the distribution of D. mawsoni and Macrourus spp. catch ...
Meeting Document : WG-FSA-17/23 : Author(s): D. Maschette, P. Burch, P. Yates and P. Ziegler
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CCAMLR scientific observation: tasks, priorities and time budget
Abstract: The workload of the tasks required in the CCAMLR Observer manual is assessed. The total ... time needed for the minimum amount of daily routine tasks was well above the capacity that an observer ... to undertake. The manual must be structured as its entirety so that the observer, only by following ... instructions in the manual, can produce the report and logbook data which is collected systematically and ...
Meeting Document : WG-EMM-07/26 : Author(s): S. Kawaguchi (Australia)
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Fish stock assessment survey in Subarea 48.3, 2004
Abstract: This report describes the activities and preliminary results of the 9th UK fish stock ... British Antarctic Survey scientists during January and February 2004. In addition to the random stratified ... bottom trawl survey the research was extended by a week in order that further investigations into the use ... of acoustic methods for the determination of icefish biomass could be undertaken. Following the ...
Meeting Document : WG-FSA-04/85 : Author(s): M. Belchier, M. Purves, M. Collins, S. Hawkins, T. Marlow, R. Mitchell, J. Szlakowski and J. Xavier (United Kingdom)
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Target strength of mackerel icefish (Champsocephalus gunnari) from a scattering model
Abstract: An anatomically detailed acoustic scattering model has been used to estimate the ... cm, at 38 kHz. The model used computed tomography (CT) scans of fish to determine the sound speed and ... density throughout the fish and simulated the complex interaction of the incident sound wave with the ... acoustic impedance contrasts throughout the fish. A preliminary length to tilt-averaged TS relationship is ...
Meeting Document : SG-ASAM-09/06 : Author(s): G. Macaulay (New Zealand)