Resultados de la búsqueda
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Progress towards a trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery
Abstract: We report on the further development of a carbon-budget trophic-model of the Ross Sea ... with which to investigate effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). The ... relative absence of krill, Antarctic silverfish (Pleuragramma antarctica) are probably the major middle ... considered a work in progress. Overall, the model is close to balance, with total exports of organic carbon ...
Meeting Document : WG-EMM-06/14 : Autor(es): M. Pinkerton, S. Hanchet and J. Bradford-Grieve (New Zealand)
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Comparison of the catches and biological characteristics of Dissostichus mawsoni in Subarea 88.1 in seasons of 2002/03 and 2003/04
Abstract: This report presents results of an exploratory fishery for Antarctic toothfish (D ... . mawsoni) conducted by the Russian vessels “Yantar” and “Volna” for two seasons of 2002/03 and 2003/04. The ... analysis of data collected relates to catch composition, effort, CPUE, and biological characteristics in ... different SSRU, month and depth of sets longlines. The comparison of these resultants showed that in the ...
Meeting Document : WG-FSA-04/84 Rev. 1 : Autor(es): K.V. Shust, N.V. Kokorin and A.F. Petrov (Russia)
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On the possibility of practical utilisation of krill target strength TS in situ obtained on the basis of EK-500 measurements
Abstract: Comparative analysis of krill length distribution in the echosurvey area, obtained with ... trawl and acoustic methods is presented. Besides, the acoustic estimate of krill length composition was ... obtained on the basis of the empiric model by Greene et al. (1991) using estimates of target strength in ... situ at the frequency of 120 kHz as measured with echosounder EK-500 (split-beam) principle). Krill was ...
Meeting Document : WG-EMM-98/19 : Autor(es): S.M. Kasatkina (Russia)
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Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish (Dissostichus mawsoni) in Southern Area of Statistical Subarea 48.4
mawsoni) in South of Statistical Subarea 48.4. This paper presents the results for D. mawsoni. Fishing ... the aims of providing the data required for assessments of the population structure, size, movement ... and growth of both Patagonian toothfish (Dissostichus eleginoides) and Antarctic tooth (Dissostichus ... effort within the south of Subarea 48.4 was relatively evenly spread between each participating fishing ...
Meeting Document : WG-FSA-11/31 Rev. 2 : Autor(es): R.C. Wakeford, J. Roberts and R.E. Mitchell (United Kingdom)
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COMPARISON OF THE PRECISION OF DIRECT VERSUS AGE LENGTH KEY METHODS OF ESTIMATING CATCH-AT-AGE PROPORTIONS
) of fish in the catch, determining the ages in the sample, and calculating proportions in each age ... to the SRS of ages, which have also been measured for length (the age-length sample), a large SRS ... by length bin estimated from the LF sample by the conditional probability of age given length bin ... otoliths removed until a fixed number of fish in each length bin have been obtained and further sampling ...
Meeting Document : WG-FSA-09/22 Rev. 1 : Autor(es): S.G. Candy (Australia)
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Variation of ice edge position in western part of Atlantic sector of the Antarctic
Abstract: Satellite imagery of the pack ice edge position in western part of the Atlantic sector ... of the Antarctic derived on each tenday period basis has been used to analyse its spatial and ... temporal variation in the area between 65° and 20°W. Amplitude of the seasonal variation of the ice edge ... position was found to increase from the west to the east. Described is two-year cyclicity of consecutive ...
Meeting Document : SC-CAMLR-VIII/BG/49 : Autor(es): Delegation of USSR
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Using vessel acoustics to detect diving patterns of krill foraging predators automatically: Development of a novel method for quantifying impact of krill fishing on seals and penguins
Abstract: The aim of this work was to assess the possibilities of automatically generating a ... dataset of dive behaviour of air-breathing predators, based on acoustic data from a monitoring survey and ... from commercial krill fishing operations. Our results documents that some form of automatic detection ... of diving predators in the data is feasible. A relatively low detection probability of our algorithms ...
Meeting Document : WG-EMM-15/25 : Autor(es): T.A. Klevjer, O.R. Godø and B. Krafft (Norway)
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Report of the SC-CAMLR Observer (Japan) to the Fourth Meeting of the Scientific Committee of the Southern Indian Ocean Fisheries Agreement (SIOFA) (Yokohama, Japan, 25 to 29 March 2019)
Abstract: The Fourth Meeting of the Scientific Committee (SC4) of the Southern Indian Ocean ... Fisheries Agreement (SIOFA) was held at the National Institute of Fisheries Science, in Yokohama, Japan from ... the CCAMLR Secretariat’s Science Manager attended at the invitation of the Executive Secretary of ... SIOFA, Jon Lansley, as part of the ongoing development of collaboration between CCAMLR and SIOFA. The ...
Meeting Document : SC-CAMLR-38/BG/12 : Autor(es): SC-CAMLR Observer (Japan)
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Hydroacoustic assessment of krill in Area 58 of the Indian Ocean sector of the Antarctic region
Abstract: On the basis of acoustically registered krill swarms along a 1097 nm transect in the ... area 58 of Indian Ocean Sector of Antarctic region, the biomass density of krill, their spatial and ... depth distribution are presented. The mean density of krill biomass between 60°00'S and 61°00' ... ; S parallels 34°00'E and 40°00'E meridian was recorded as 0.6t.km-2. Presence of krill was ...
Meeting Document : WG-EMM-98/36 : Autor(es): Z. Klusek and A. Anrose (India)
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Interannual variability of the South Georgia marine ecosystem: biological and physical sources of variation in the abundance of krill
Abstract: Interannual variability is a characteristic feature of the Southern Ocean ecosystem yet ... the relative roles of biological and physical processes in generating these fluctuations are unknown ... . There is now extensive evidence that there are years when there is a very low abundance of Antarctic ... krill (Euphausia superba) in the South Georgia area, and that the variation affects much of the ...
Meeting Document : WS-AREA 48-98/8 : Autor(es): E.J. Murphy, J.L. Watkins, K. Reid, P.N. Trathan, I. Everson, J.P. Croxall, J. Priddle, M.A. Brandon, A.S. Brierley (UK) and E. Hofman (USA)