Resultados de la búsqueda
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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 : Autor(es): Submitted by ASOC
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PROPERTIES OF KRILL DISTRIBUTION IN PELAGIC AND COASTAL SSMUs OF THE SOUTH ORKNEY ISLANDS SUBAREA ACCORDING TO THE DATA OF SCIENTIFIC OBSERVATIONS AND FISHERY
Abstract: In this paper the krill spatial distribution in the in coastal and pelagic SSMUs of the ... presented based on the CCAMLR 2000 Survey data. It is shown, that despite the high biomass concentrated in ... long-term observations and fishery in Subarea 48.2. The types of geostrophic current fields and ... correspondent fishing ground allocations in the South Orkney Islands area revealed from 1962 to 1997 are ...
Meeting Document : WG-EMM-08/55 : Autor(es): S.M. Kasatkina and V.N. Shnar (Russia)
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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 : Autor(es): E.A. Pakhomov (Ukraine)
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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 : Autor(es): P.S. Gasiukov (USSR)
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Statistical problems in krill stock hydroacoustic assessments
the methods applied to establish biomass in a survey area and the second is the improvement in ... accuracy of target-strength measurements. In the case of statistical methods, there are no clear guidelines ... survey methods assume the population is fixed in space, relative to the sampling interval. There remain ... several unsatisfied needs for improvements in sampling design and tests for systematic trends in survey ...
Meeting Document : SC-CAMLR-VII/BG/22 : Autor(es): United States of America
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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 : Autor(es): Y. Shimadzu (USA)
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Uncertainty in green weight estimates from Norwegian krill fishing vessels
an issue raised repeatedly within CCAMLR for a number of years, resulting in a modification to the C1 ... form implemented for the fleet in 2012. There are at present three Norwegian vessels operating in the ... krill fishery for Euphausia superba in the Antarctic. These vessels have in recent years contributed to ... therefore be important contributions to an estimate of total uncertainty in catch weight. Here, we present ...
Meeting Document : WG-EMM-13/41 : Autor(es): G. Skaret and T. Knutsen (Norway)
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Assessing status and change in Southern Ocean ecosystems
trends of Southern Ocean marine ecosystems overall, against which change in ecosystem structure and ... function can be unambiguously assessed in the future. This challenge includes being able to assess the ... likelihood of different states in the future. These requirements are needed by different bodies regionally ... and globally for making tactical decisions, such as catch limits and conservation requirements in the ...
Meeting Document : WG-EMM-13/36 : Autor(es): A. Constable (Australia), D. Costa (USA), E. Murphy (United Kingdom), E. Hofmann, O. Schofield (USA), A. Press (Australia), N. Johnston (United Kingdom) and L. Newman (Australia)
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A summary of scientific observer deployments and data collection in the krill fishery during the 2011, 2012 and 2013 seasons
Abstract: The level of observer coverage in the krill fishery and the scientific sampling ... undertaken are summarised. During 2012 all 12 of the vessels that participated in the krill fishery carried ... observers for some or all of their fishing operations. From a total of 860 vessel days of fishing in 2012 ... ‘days’. Krill length-frequency distributions showed that the greatest variability in size structure ...
Meeting Document : WG-EMM-13/38 : Autor(es): CCAMLR Secretariat
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Development of the Patagonian toothfish (Dissostichus eleginoides) tagging program in Division 58.5.2, 1997–2014
toothfish tagged and released, and 4925 recaptures. The data derived from this program has been valuable in ... estimating key population parameters for toothfish in this region, and have been used in the 2014 stock ... assessment (Ziegler, et al, 2014) in various ways including: local abundance estimators; natural mortality ... currently be used in an unbiased manner to estimate stock abundance. Developing spatially explicit models ...
Meeting Document : WG-FSA-14/43 : Autor(es): D.C. Welsford, C. Péron, P.E. Ziegler and T.D. Lamb (Australia)