Search results
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Nine years of tag-recapture in CCAMLR Statistical Subarea 48.3 – Part I: General data characterisation and analysis
Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3. It describes the tagging procedure, the ... information gained about biology, growth and movement of Patagonian toothfish, and explains the overlap of ... tagging length distributions with those of the landed catch and survey data. The characterisation of tag ... recapture data from Subarea 48.3 shows that the tagging programme is successful in providing substantial ...
Meeting Document : WG-SAM-14/35 : Author(s): M. Soeffker, C. Darby and R.D. Scott (United Kingdom)
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UK groundfish survey in Subarea 48.3 (South Georgia and Shag Rocks), January 2000
Abstract: A survey was conducted by the UK around South Georgia and Shag Rocks, Subarea 48.3 ... , from 11 January to 2 February 2000, using the FV Argos Galicia. The design followed similar surveys by ... the UK conducted throughout the late 1980s and 1990s. The swept area estimates of the standing stock ...
Meeting Document : WG-FSA-00/21 : Author(s): I. Everson, D. Agnew, P. Bagley, M. Collins, T. Daw, R. Forster, T. Marlow, A. North (United Kingdom), J. Szlakowski (Poland), E. Van Wijk (Australia), S. Wilhelms (Germany) and C. Yau (United Kingdom)
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UPDATE ON ITEMS OF INTEREST TO WG-IMAF
Economic Zone that are relevant to the work of the IMAF working group. The bycatch of seabirds by fisheries ... within New Zealand’s EEZ in recent years that either breed or forage within the CCAMLR convention area ... (Convention Area seabirds) is detailed. This paper contains description of the recent and ongoing seabird ... mitigation trials that are underway in New Zealand. We also briefly report on the ongoing revision of the ...
Meeting Document : WG-IMAF-09/16 : Author(s): N. Walker (New Zealand)
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Estimating krill recruitment and its variabiliity
Abstract: A maximum likelihood method is developed for the decomposition of krill density at ... length data into the proportion of recruits in population sampled in a net haul survey. Preliminary ... results from a series of 5 net haul surveys in the South Atlantic and the Indian Ocean sectors of the ... 0.100. The corresponding results for two year old krill from 9 surveys are 0.552 and standard deviation ...
Meeting Document : WG-KRILL-93/12 : Author(s): W. de la Mare (Australia)
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Proposed expansion of research block 48.6_4 for more reliable stock assessment
Abstract: At WG-SAM-15, Japan indicated it would submit a revised proposal on the design of ... research block 48.6_4 to WG-FSA-15. Here we propose the westward expansion of the research block along the ... continental shelf-slope to promote sufficient utilization of the catch limit, which would enable us to ... complete planned research and support a more reliable stock assessment. The revised design may also ...
Meeting Document : WG-FSA-15/24 : Author(s): T. Ichii, T. Namba (Japan), D.C. Welsford (Australia) and K. Taki (Japan)
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Assessment of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.4
. eleginoides) in Subarea 48.4. The assessment data are updated with the observations for the 2017/18 season and ... the data weighting method revised to be consistent with those applied in other CCAMLR assessment model ... fits. Stock projections indicate that the stock was at 67% of B 0 in 2018/19 and that a yield of 27 ... tonnes in 2019/20 and 2020/21 is consistent with the application of the CCAMLR harvest control rule ...
Meeting Document : WG-FSA-2019/29 : Author(s): T. Earl and E. MacLeod
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Krill length frequency distribution in Subarea 48.3 in January–April 1988 in relation to sources of its origin
considered in the frame of hypothesis of krill resources forming from two sources: Antarctic Circumpolar ... Current and Weddell Scotia Sea water flow. It is shown, that small krill with the mode of about 33 mm is ... distributed in the coastal zone of about 7-40 miles wide, further is situated the boundary zone at the ... distance of about 30-60 miles, beyond boundary zone occurs larger krill with the mode of about 49 mm. Krill ...
Meeting Document : WG-EMM-03/40 : Author(s): F.F. Litvinov, V.N. Shnar, A.V. Zimin and V.V. Lidvanov (Russia)
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
US AMLR datasets and used to mimic data that might be collected by the commercial fishery during the ... the 3-frequency method using the CCAMLR protocol for the period between 1996 and 2011 in both the ... Elephant Island and West Shelf Areas of the US AMLR survey grid. Cross-validation of acoustic estimates ... between these two areas and the 3-frequency biomass showed that models developed using a wide length ...
Meeting Document : SG-ASAM-12/04 : Author(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)
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Report on Argentine CCAMLR Subarea 48.3 survey: fish
Abstract: Information on biological aspects of the finfish catches obtained in the survey of BIP ... Dr. E L Holmberg, conducted around Shag Rocks and the South Georgias Islands in April-May 2013, is ... brevicauda guntheri and Gobionotothen gibberifrons, the most frequents. The highest fish densities were found ... in the shelf of the South Georgias Islands. Total lengths ranged from 4 to 55 cm, 7 to 63 cm, 9 to 51 ...
Meeting Document : WG-FSA-13/62 : Author(s): A. Zavatteri and A. Giussi (Argentina)
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
US AMLR datasets and used to mimic data that might be collected by the commercial fishery during the ... the 3-frequency method using the CCAMLR protocol for the period between 1996 and 2011 in both the ... Elephant Island and West Shelf Areas of the US AMLR survey grid. Cross-validation of acoustic estimates ... between these two areas and the 3-frequency biomass showed that models developed using a wide length ...
Meeting Document : SG-ASAM-15/03 : Author(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)