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Preliminary assessment of long-term yield of Patagonian toothfish (Dissostichus eleginoides) for the Heard Island region (CCAMLR Division 58.5.2) based on a random stratified trawl survey in June 2005
Abstract: A survey of Patagonian toothfish, Dissostichus eleginoides,was undertaken in Division ... 58.5.2 in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... -term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ... sensitivity to exclusion of observations of older cohorts in recent surveys, (ii) implementation of revised ...
Meeting Document : WG-FSA-05/30 : Автор(ы): A.J. Constable, T. Lamb and R. Williams (Australia)
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Geographical differences in the condition, reproductive development, sex ratio, and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
differences in a number of indices from toothfish found on the Ross shelf proper, as distinct from those ... a consistent peak over all sampling seasons in comparison with the southern group in which the ... distribution was multimodal, showed a consistent and significant higher ratio of males to females, was in ... poorer condition, and was more advanced in reproductive development. Author(s): J.M. Fenaughty (New ...
Meeting Document : WG-FSA-05/52 : Автор(ы): J.M. Fenaughty (New Zealand)
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Scientific observations in CCAMLR fisheries – past, present and future
are difficult and expensive to conduct. In addition, the size of the Convention Area, its remoteness ... and prevailing inclement weather have complicated matters. Therefore, in addition to the standard ... aboard fishing vessels has assumed prominence in the collection of essential data for fisheries ... management purposes. The Scheme of International Scientific Observation, adopted by CCAMLR in 1992, is ...
Meeting Document : WG-FSA-04/64 : Автор(ы): Secretariat
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Observations of Adélie penguins in two seasons with contrasting weather and sea-ice conditions – a brief report
Abstract: The 2002-03 breeding season in comparison with 2000-01 at Edmondson Point was ... colony during December coinciding with hatching and the guard stage. The sea ice in the Ross Sea was held ... in by the presence of the large icebergs. This resulted in extensive sea ice lasting into February ... adjacent to the Edmonson Point colony. These environmental effects were accompanied by changes in CEMP ...
Meeting Document : WG-EMM-03/59 : Автор(ы): S. Olmastroni, F. Pezzo, V. Volpi and S. Focardi (Italy)
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Distribution of temperature, salinity, density and flow across the Drake Passage in December 1994
Fisheries Agency was conducted in the waters around the Antarctic Peninsula in 199/95 austral summer season ... . In the survey, oceanographic observations were carried out along the north-south line from 56-21 S ... recognized by a steep gradient in temperature was located between 58-00S and 59-00S. The Antarctic Surface ... . Upwel1ing of the Warm Deep Water was suggested in the costal water north of the South Shetland Islands ...
Meeting Document : WG-EMM-01/30 : Автор(ы): M. Naganobu and K. Kutsuwada (Japan)
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Acoustic assessment of potential bias in abundance estimates of mackerel icefish from trawl surveys
Abstract: In 2000, CCAMLR asked the Working Group on Fish Stock Assessment (WG-FSA), whether ... that a significant proportion of the stock occurred in midwater. If this is the case, then bottom trawl ... trawl and acoustic data taken contemporaneously during a survey for mackerel icefish in the Heard Island ... region (CCAMLR division 58.5.2) in May 2000. The relationship between mackerel icefish catches and the ...
Meeting Document : WAMI-01/05 : Автор(ы): E. van Wijk, T. Pauly, A. Constable and R. Williams (Australia)
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Some comments on the procedure of krill target strength assessment in echosurveys
in echosurveys is discussed. It is known that krill abundance and biomass estimation should be ... considered as two independent tasks with different requirements to midwater trawl utilization in echosurveys ... requires another approach to echosurveys, since two actually independent task should be solved in that case ... : assessment of MSBS (MVBS) acoustic parameter distribution and krill length (weight) distribution in the study ...
Meeting Document : WG-EMM-98/21 : Автор(ы): S.M. Kasatkina (Russia)
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Estimates of sustainable yield for 50 data-poor stocks in the Pacific coast groundfish fishery management plan
in Federal fishery management plans beginning in 2011. Most species listed in the Pacific Coast ... Groundfish Fishery Management Plan have not been assessed, in large part due to data limitations. Estimates ... stock productivity. For this set of data-poor stocks, recent landings statistics reflect shifts in the ... distributions, reflecting our uncertainty in model parameters. We select median values as point estimates of OFL ...
Meeting Document : WG-SAM-11/P1 : Автор(ы): E.J. Dick and A.D. McCall
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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 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 ... fields, distributed in a rather narrow depth range,- obviously may promote above said zones, firstly ...
Meeting Document : WG-EMM-09/44 Rev. 1 : Автор(ы): S.M. Kasatkina and V.N. Shnar (Russia)
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KRILL FISHERY BEHAVIOUR IN THE SOUTHWEST ATLANTIC
behaviour of krill fishery. Analysis of travel distance in relation to catch level revealed a pattern that ... to year variability in the probabilities of operating within a local range after a number of tows. In ... only 0.1, but in the 2004/05 season it was 0.7. Fishery behaviour differentiates between market type ... /operational requirements in an area. These kinds of analysis show the importance of good year-round data from ...
Meeting Document : WG-EMM-08/39 : Автор(ы): S. Kawaguchi (Australia)
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