Search results
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A history of the acquisition and analysis of sea-ice data by CCAMLR
the early years of development of the ecosystem monitoring program sea ice data, especially derived ... 1990, and following a pilot study carried out by the Secretariat sea ice data derived from US Joint Ice ... Centre ice charts were routinely acquired and analysed by the Secretariat from 1993. An alternative ... source of data, digital images produced by the US National Snow and Ice Data Centre, with a relatively ...
Meeting Document : WG-EMM-96/15 : Author(s): Agnew, D.J.
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 and 120 kHz
Abstract: Differences in the target strength of adult Antarctic krill (Euphausia Superba) at 38 ... and 120 kHz have been inferred from differences in the mean back-scattering strength of swarms ... simultaneously insonified at these two frequencies in studies off the South Orkneys and Elephant Island in March ... in average target strength at these two frequencies. The results are in good agreement with recent ...
Meeting Document : WG-KRILL-90/28 : Author(s): I. Hampton (South Africa)
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A re-analysis of the Kerguelen Shelf and Skiff Bank stocks of Champsocephalus gunnari
Abstract: Catches of Champsocephalus gunnari from the Kerguelen Shelf and Skiff Bank stocks were ... re-calculated from those used by the Working Group on Fish Stock Assessment in 1989 using length ... -frequency data for the years 1981 to 1990. Cohort analysis yielded a Stock Biomass of 22 711 tonnes in 1988 ... for the Age 2 Kerguelen Shelf stock, an order of magnitude lower than that calculated from a biomass ...
Meeting Document : WG-FSA-90/17 : Author(s): G. Duhamel (France) and D.J. Agnew (Secretariat)
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Methods of age determination for mackerel icefish (Champsocephalus gunnari Lönnberg 1905) from the South Georgia Island shelf
1905) from the South Georgia Island shelf Abstract / Description: Radii of annual elements of otoliths ... of mackerel icefish (Champsocephalus gunnari) from the South Georgia shelf were determined by ... taken in the period July to September. The latter was done using specimens from strictly defined age ... groups. It is suggested that the determined radii of annual elements of otolith could be used to adjust ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 37–49 : Author(s): Frolkina, Zh.A.
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Report from the Workshop on Krill-fishery Management for Subareas 48.1 and 48.2 (Concarneau, France, 10 to 14 June 2019)
Abstract: We briefly report on a workshop held from 10-14 June, 2019 at the Pôle Nautique and ... Museum of Natural History in Concarneau, France (immediately prior to the annual meetings of WG-SAM and ... WG-EMM). The Workshop was attended by representatives from ARK, ASOC, Pew, and WWF plus scientists ... from Argentina, Australia, Chile, France, Germany, Korea, Norway, Ukraine, the UK, and the USA. Funding ...
Meeting Document : SC-CAMLR-38/16 : Author(s): G. Watters and P. Trathan
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Genetic analysis of Antarctic toothfish samples from the Southern Ocean to explore potential stock boundaries
restriction enzyme digests of nine sub regions of the mitochondrial genome. Polymorphisms were found in four ... out of seven introns digested with the restriction enzymes, but there was no population ... differentiation among the three sea areas. While direct sequencing of cytochrome b (665 base pair) showed ... virtually no variation, sequences for ~600 bp of the left domain of the control region showed nucleotide ...
Meeting Document : WG-FSA-04/32 : Author(s): P.J. Smith, S.M. McVeagh (New Zealand) and P.M. Gaffney (USA)
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PROPERTIES OF WATER DYNAMICS AND KRILL DISTRIBUTION IN THE SOUTH SANDWICH ISLANDS SUBAREA
Abstract: of mean krill density in Subarea 48.4 there are premises for formation of the zones ... with increased density. These zones are located within the near-shore shelf-based SSMU and associated ... with meanders and eddy favorable for krill concentration. Here, in the cold water of the Weddell Sea ... , the main part of biomass of Subarea 48.4, are concentrated. In January-February, 2000, almost 60% of ...
Meeting Document : WG-EMM-09/44 Rev. 1 : Author(s): S.M. Kasatkina and V.N. Shnar (Russia)
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A generalised model for evaluating yield and the long term status of fish stocks under conditions of uncertainty
flexibility for assessing the influence of different patterns of growth, natural mortality, spawning and ... fishing on the estimates of yield per recruit. Also, it can be used to evaluate the performance of a stock ... under a specified catch regime. The model uses an adaptive Runge-Kutta procedure to evaluate stock ... each year by integrating a set of differential equations which incorporate functions that specify the ...
Meeting Document : WG-FSA-95/41 : Author(s): de la Mare, W.K., Constable, A.J.
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Continuation of multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) by Australia, France, Japan, Republic of Korea and Spain
rules remain to be determined for these Divisions. WG-FSA-16/29 outlines the first multi-member ... milestones in accordance with ANNEX 24-01/A. In 2016, the Scientific Committee agreed that the research plan ... the continuation of the research plan as set out in WG-FSA-16/29. All significant changes to the plan ... . Issues arising from the 2016/17 season are also provided in Section B. Author(s): Delegations of ...
Meeting Document : WG-FSA-17/18 Rev. 1 : Author(s): Delegations of Australia, France, Japan, Republic of Korea and Spain
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Summary of New Zealand research projects relevant to the Ross Sea region Marine Protected Area
researchers that are relevant to spatial planning, monitoring and research in relation to the Ross Sea region ... Marine Protected Area. The inventory includes: (1) research to establish “baseline” environmental and ... ecological conditions in the Ross Sea region; (2) “process-based” research to understand environmental and ... ecological processes and interactions; (3) modelling, assessment and simulation research related to the ...
Meeting Document : WS-SM-18/03 : Author(s): M. Pinkerton and J. Scarrow