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Preliminary results of the third CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2014
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... abundance from a well-designed survey could be a useful input into the Ross Sea stock assessment model. The ... first survey was completed in February 2012 (), and the second survey was completed in February 2013 ... (Parker et al. 2013). In this paper we provide preliminary results of the third survey in the time series ...
Meeting Document : WG-SAM-14/24 : Autor(es): S. Mormede, S.J. Parker, S.M. Hanchet, A. Dunn (New Zealand) and S. Gregory (United Kingdom)
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Exploring variability in the locations used by the krill fishery in Area 48 in relation to intra- and inter-annual variability in seasonal sea ice
Abstract: We present preliminary analyses of krill fishery catch data covering the period ... rapidly from mid May, often extending to cover the whole core fishing area, forcing the fishery to ... relocate by late June. Much of the effort relocates to Subarea 48.3, where the shelf and shelf-break ... fishing areas are normally ice free throughout the winter. In Subarea 48.1 ice cover begins to increase ...
Meeting Document : WG-EMM-14/11 : Autor(es): J. Silk, S.L. Hill and P.N. Trathan (United Kingdom)
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in May–June 2006 using the Generalised Yield Model
58.5.2 in the vicinity of Heard Island in May-June 2006 to provide the information for an assessment of ... short-term annual yield in the 2006/2007 CCAMLR season. This paper provides a preliminary assessment of ... yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. A lack of ... evidence of strong year classes recruiting to the population has led to a significant decrease in the ...
Meeting Document : WG-FSA-06/43 Rev. 1 : Autor(es): D.C. Welsford (Australia)
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The efficacy of video-based electronic monitoring technology for at-sea monitoring of the halibut longline fishery
Abstract: This project involved the large-scale deployment of electronic monitoring (EM) systems ... on the 2002 British Columbia halibut longline fishery to evaluate the feasibility of EM as an ... groupings, and the 15 fish most abundant species accounted for 98% of the catch. Data from fishing trips ... %, and individual identifications by hook agreed in over 90% of the catch records. EM reliably (i.e ...
Meeting Document : WG-FSA-03/100
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1998–1999
Abstract: Longline fishing for Patagonian toothfish Dissostichus eleginoides in the South African ... Exclusive Economic Zone around the Prince Edward Islands commenced in 1996. This paper summarises seabird ... bycatch during the year July 1998-June 1999. Data on seabird bycatch were obtained from fishery observers ... % more than the number of hooks set in 1997-98, but only 79 seabirds (150/0 of the total killed in 1997 ...
Meeting Document : WG-FSA-99/42 Rev. 1 : Autor(es): P.G. Ryan and B.P. Watkins (South Africa)
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Studies on zooplankton with special reference to krill from the Indian Ocean sector of the Southern Ocean
that the present investigation site falls under potential krill fishing ground. Author(s): K.L. Bhat ... Abstract: Distribution, abundance and species composition of zooplankton collected during the ... 303.62m1./100m-3 (x=142.14±77.02). High standing stock values were recorded in the study area where ... copepods, chaetognaths, euphausiids and salps were the dominant taxa. Copepoda formed the major constituent ...
Meeting Document : WG-EMM-98/35 : Autor(es): K.L. Bhat, R. Vijayakumar and V. Jaya Sree (India)
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DISTRIBUTION OF KRILL AT THRESHOLD DENSITIES SUITABLE FOR FISHING IN THE ATLANTIC SECTOR: ANALYSIS OF THE 2000 SYNOPTIC SURVEY DATA
Abstract: 1. We used the CCAMLR 2000 synoptic survey acoustic dataset to compare pelagic and ... shelf SSMUs in terms of the frequency of 1nm integration units with krill densities above and below a ... integration units where the threshold density for fishing was set at 100 gm2 following Kasatkina (2003). 3 ... . This was also true with other threshold values in the range 25 to 200 gm2 although the difference was ...
Meeting Document : WG-EMM-08/16 : Autor(es): S. Hill and D. Agnew (United Kingdom)
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A PROPOSED MANAGEMENT PROCEDURE FOR THE TOOTHFISH (Dissostichus eleginoides) RESOURCE IN THE PRINCE EDWARD ISLANDS VICINITY
Pessimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region ... are developed which take account of the different selectivities of past longline and pot fisheries ... recommendations for this resource. The MP uses two data sources: the recent trend in longline CPUE and the mean ... length of the catches made. A specific MP, with its associated control parameter values, is proposed for ...
Meeting Document : WG-SAM-08/11 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)
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Catch and effort data for the longline fishery in Subarea 48.3 – comparison of data reported to CCAMLR and data acquired by the UK between 1994 and 1996
Abstract: Haul by haul data acquired by the UK from longline fishing for Dissostichus eleginoides ... to be missing from the CCAMLR database. One instance was identified of multiple hauls being submitted ... as single records. A number of hauls yielding zero catches present in the data acquired by the UK ... have not been reported to CCAMLR. In 1996 less than 10% of the hauls showed large discrepancies between ...
Meeting Document : WG-FSA-97/37 : Autor(es): Parkes, G.B., Pearce, J., Agnew, D.J.
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Seabird mortality in the longline fishery for Patagonian toothfish at the Prince Edward Islands: 1996–1997
Abstract: Longline fishing for Patagonian toothfish Dissostichus eleginoides commenced at the ... . This paper summarizes the mortality of seabirds associated with this fishery during the year July 1996 ... fishing trips. Some 3.2 million hooks were observed during the period November-June, representing 84 % of ... the estimated 3.8 million hooks set by permit-holders in the South African Exclusive Economic Zone ...
Meeting Document : WG-FSA-97/51 : Autor(es): Boix-Hinzen, C., Enticott, J.W., Ryan, P.G., Wanless, R., Purves, M., Nel, D.C.