Résultats de la recherche
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A study of Patagonian toothfish (Dissostichus eleginoides) post-tagging survivorship in Subarea 48.3
, fish with a variety of injuries were selected to see if this affected recovery. In the final analysis ... in Subarea 48.3 Abstract / Description: During the 2005 fishing season, experiments on the ... survivorship of toothfish following tagging were carried out on eight different vessels fishing in Subarea 48.3 ... , 396 animals were included, with an overall survivorship of 90%. Smaller animals and animals in better ... both the Ross Sea and South Georgia are now based in part on the analysis of mark–recapture data (SC ... approaches may be adopted in the different areas. Knowledge of post-tagging survival is extremely important ... survivorship have been made using a combination of on-board tank experiments and the difference in mark ... survivorship of toothfish tagged by observers. Methodology In the 2005 fishing season all vessels fishing ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 279–289 : Auteur(s): Agnew, D.J., J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones, G. Breedt, S. Du Plessis, J. Van Heerdon and G. Moreno
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A brief characterisation of Patagonian toothfish tag survival and tag detection in CCAMLR Statistical Area 48.3
Abstract: Mark-recapture data is a central element in the assessment of population size and ... growth and the stock assessment for Patagonian Toothfish (Dissostichus eleginoides) in CCAMLR subarea ... 48.3 relies on accurate tagging samples for its assessment. The bias in tagging survival and tag ... detection is assumed to be minimal in the model, but this assumption has not previously been tested; a ...
Meeting Document : WG-FSA-13/29 : Auteur(s): M. Soeffker and R. Scott (United Kingdom)
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Secretariat work in support of WG-EMM
the past year in support of WG-EMM. The outcome of these tasks are outlined in table format. Where ... Abstract: This paper summarises some of the main tasks which the Secretariat has undertaken over ... work in support of WG-EMM Approval: Approved ... required, detailed information is provided in meeting papers Author(s): Secretariat Title: Secretariat ...
Meeting Document : WG-EMM-01/6 : Auteur(s): Secretariat
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Assessment of toothfish in Subarea 48.3, 2006
requested by the Joint Assessment Group. 2. Also as requested by SAM-2006, we provide a review of CPUE ... derived from otolith examination of a random sample of the catch. 3. All the assessments suggest that the ... SSB is now at or close to 50% of its unexploited level. Simple MPD projections suggest that catches in ... . Hillary, M. Belchier, J. Clark and J. Pearce (United Kingdom) Title: Assessment of toothfish in Subarea ...
Meeting Document : WG-FSA-06/53 : Auteur(s): D.J. Agnew, R. Hillary, M. Belchier, J. Clark and J. Pearce (United Kingdom)
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Recalculation of Antarctic krill (Euphausia superba) biomass off East Antarctica (30–80°E) in January–March 2006
CCAMLR guidelines- issued in 2010 via SG-ASAM. Our revised estimate of mean areal krill density is 20.5 ... survey. The recalculation was carried out on the calibrated, multi-frequency acoustic data described in ... Abstract: We recalculated krill biomass for the 2006 BROKE-West (CCAMLR Division 58.4.2) summer ... Jarvis et al. (2010) Deep-sea Res. Pt II 57:916-933. Biomass recalculation methods conformed to the ...
Meeting Document : WG-EMM-12/31 : Auteur(s): M.J. Cox and S. Kawaguchi (Australia)
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ANALYSIS OF KRILL OBSERVER COVERAGE IN SUBAREA 48.3
. The Scientific Committee’s method of systematic partial coverage appears to have been sufficient in ... been implemented since 2002. Observers have been placed on approximately 50% of vessels fishing in any ... one season, and have been present on board for about 30% of the fishing season. They have achieved a ... rate of sampling equivalent to 18% of total hauls taken in a season being sampled for krill and 11% for ...
Meeting Document : WG-EMM-09/25 : Auteur(s): D.J. Agnew, P. Grove, T. Peatman, R. Burns and C. Edwards (United Kingdom)
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Preliminary results of a bottom trawl survey around Elephant Island in October and December 1987
proportion of larger (= older) fish in the catches increased. Composition of the catches of C. gunnari ... Paper Title: Preliminary results of a bottom trawl survey around Elephant Island in October and ... Chaenocephalus aceratus, Notothenia gibberifrons and N. neglecta at least since February 1985. In N. rossii the ... other shelf areas of the Peninsula region. File: 09-Kock.pdf ... and N. neg/ecta at least since February 1985. In N. rossii the proportion of larger (= older) fish in ... the catches increased. Composition of the catches of C. gunnari differed significantly from that in ... described by Kock (1986) and Nast et al. (1988). Results of the most recent survey in October and December ... in Figure 1. The shallow water area southwest of Endurance Glacier was sampled by the launch ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 185-200 : Auteur(s): Kock, K.-H.
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Methodical aspects of a large-scale international krill survey in 2019: comments and proposals
Abstract: Methodical aspects of a large-scale international survey in 2019 are discussed in the ... context of stated objectives. The main sources of uncertainty in the results of the 2019 survey are shown ... . Author(s): S. Kasatkina Title: Methodical aspects of a large-scale international krill survey in 2019 ...
Meeting Document : WG-EMM-2019/55 : Auteur(s): S. Kasatkina
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Preliminary tag-recapture based population assessment of Antarctic toothfish in Subarea 48.4
Abstract: The stock of Antarctic toothfish (D. mawsoni) in CCAMLR Subarea 48.4 is estimated from ... tagging returns to be 979.3 tonnes in 2017. Applying the CCAMLR agreed precautionary assumption of average ... biomass across the time series and harvest rate of γ = 0.038, implies a 2017/18 yield of 37 tonnes ... compared to the 2016/17 catch limit of 38 tonnes. Author(s): N.D. Walker and T. Earl Title: Preliminary ...
Meeting Document : WG-FSA-17/49 : Auteur(s): N.D. Walker and T. Earl
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands, 2006/07
study undertaken at Bird Island, South Georgia in 2006/07. Author(s): Delegation of the United Kingdom ... Abstract: The results of the eleventh annual survey of entanglement of Antarctic fur seals at ... Signy Island, South Orkney Islands are reported for the 2006/2007 summer season. There was 1 sighting of ... Title: Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island ...
Meeting Document : SC-CAMLR-XXVI/BG/20 : Auteur(s): Delegation of the United Kingdom