Search results
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Antarctic krill, Euphausia superba Dana, demography studies in the seas of Sodruzhestvo and Cosmonauts (Indian Ocean sector of Antarctica)
Abstract: The materials on Euphausia superba biological state and size composition in the Indian ... duration, as well as about the interannual variability in the above parameters. According to our data ... , duration of E.superba life cycle somewhat exceeds 5 years in the Sea of Cosmonauts and 6 years in the Sea ... of Sodruzhestvo. E.superba growth rate ranges from 0.126- 0.133 mm per day in the first year 0f life ...
Meeting Document : WG-KRILL-93/45 : Author(s): E.A. Pakhomov (Ukraine)
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An analysis of early change in the blubber thickness of minke whales as an indicator of krill availability
Abstract: Data on blubber thickness measured on 26,751 minke whales caught in the IWC Areas III ... significant relation were detected between blubber thickness and body length in both mature males and pregnant ... for these factors, considerable yearly variations were shown in the thickness in December, in which 12 ... . Comparison based on the difference between the thickness in December in successive years was proved valid, by ...
Meeting Document : WG-CEMP-87/18 : Author(s): Y. Shimadzu (USA)
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Progress by WG-EMM-STAPP in estimating krill consumption by air-breathing predators within CCAMLR areas
Abstract: This paper summarises progress by WG-EMM-STAPP in estimating krill consumption by air ... -breathing predators in CCAMLR management units. There have been significant advances in estimating krill ... consumption by pack-ice seals and penguins since the last update in 2011. Estimates of pack-ice seal abundance ... krill-consuming seal species, has been estimated in Areas 48 and 58. Large-scale estimates of breeding ...
Meeting Document : WG-EMM-16/68 : Author(s): C. Southwell and P. Trathan
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Research plan for the 2017/18 exploratory longline fishery of D. mawsoni in Subarea 48.6 by South Africa and Japan
Abstract: South Africa and Japan made the next season’s (2017/18) research plan in Subarea 48.6 ... on 10 th May, 2017. The estimated median stock size in research block 48.6_2, 48.6_3, and 48.6_4 was ... 5657.54, 5162.26, and 8211.25 tonnes, respectively, in Chapman method considering tags released in the ... . The estimated median stock size in block 48.6_2, 48.6_3, and 48.6_4 was 801.17, 124.71, and 981.91 ...
Meeting Document : WG-SAM-17/03 : Author(s): Delegations of Japan and South Africa
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Simulating performance of trend analysis for setting catch limits in exploratory toothfish research plans
Abstract: Catch limits for toothfish in research blocks were set for the 2017/18 season using a ... qualitative analysis of trends in biomass estimated in each research block and a series of simple decision ... high or low abundance, high or low uncertainty in biomass estimates, and for populations with ... increasing, stable, or decreasing trends in abundance. The trend analysis rules performed well given the ...
Meeting Document : WG-SAM-18/23 : Author(s): S. Hoyle, S. Parker, A. Dunn and S. Mormede
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Pygoscelid penguins vulnerabilities to spatio-temporal changes of the krill fisheries in the Antarctic Peninsula
Abstract: Fast climate changes in the Antarctic Peninsula are reducing krill density, which, by ... its turn, is reflected in penguin population dynamics. The increased concentration of fishing ... activities in this area in the last two to three decades is believed to have feedbacked the impacts of ... penguin population monitoring to test this assumption. We found that fisheries in Antarctic Peninsula are ...
Meeting Document : WG-EMM-2019/10 : Author(s): L. Krüger, F. Santacruz, L. Rebolledo and C. Cárdenas
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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 : Author(s): M. Soeffker and R. Scott (United Kingdom)
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) for the Heard Island Plateau region (Division 58.5.2) based on a survey in June 2005
Abstract: A survey of Mackerel Icefish, Champsocephalus gunnari,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 ... using the assessment methods of CCAMLR. It is proposed that a one-year projection be used in the ...
Meeting Document : WG-FSA-05/39 : Author(s): A.J. Constable, T. Lamb and R. Williams (Australia)
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A TIME FOR ACTION IN THE MANAGEMENT OF ANTARCTIC KRILL FISHERIES
Abstract: In this paper, ASOC draws CCAMLR’s attention to the most pressing issues in relation to ... address key scientific uncertainties at the SSMU level in Area 48, and the consideration of feedback ... management approaches in this Area as soon as possible. In addition, ASOC maintains that CCAMLR should take ... precautionary measures to prevent concentration of catches in coastal areas as the fishery approaches the ...
Meeting Document : CCAMLR-XXVII/BG/24 : Author(s): Submitted by ASOC
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On assessing the size of the humped rockcod stock (Notothenia gibberifrons) in Subarea 48.3
Abstract: An adaptive approach was used to assess the Notothenia gibberifrons stock in Area 48.3 ... approach in this case involved using a target function in the form of the sum of square deviations in ... logarithms of observed and calculated biomass indices and resulted in an estimate of from 21.5 to 42.1 ... thousand tonnes for N. gibberifrons biomass in the 1989/90 season. It is thus possible to suggest a TAC of ...
Meeting Document : WG-FSA-91/26 : Author(s): P.S. Gasiukov (USSR)