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By-catch of fishes caught by the fishery vessel Niitaka Maru in the South Georgia area (August to September 2004)
of by-catch fishes were occurred in 76 trawl catches. The family Myctophidae, the most abundant taxa ... during the present survey, were found in 61% of hauls examined. Although only one species, Lepidonotothen ... larseni, was captured as by-catch of the Nototheniidae, the Nototheniidae were the next in abundance and ... found in 25% of hauls. Length frequency distribution of by-catch of L. larseni shows this species is ...
Meeting Document : WG-EMM-05/19 : Автор(ы): T. Iwami, T. Hayashi, K. Taki and M. Naganobu (Japan)
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
limit in Area 48 that will be highly likely to achieve the objectives of the convention despite the ... uncertainties in knowledge. This will be part of the management procedure governing the krill fishery. The ... procedures in a simulation framework, using plausible models of the Antarctic marine ecosystem. This paper ... aspects of model development. Part 1 outlines the issues to consider in assessing the requirements of ...
Meeting Document : WG-EMM-04/24 : Автор(ы): A. Constable (Australia)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2002 winter and 2002/03 breeding season
reported here. The overall number of entanglements showed a decrease from last year of 55% in winter and 67 ... %. Severe injuries accounted for 33% of entanglements over winter and 25% during the summer. As in previous ... years, most individuals observed entangled in debris were juveniles (88% of winter and 81% of summer ... dominated the observations in both seasons. Plastic packaging bands and synthetic strings (nylon braid ...
Meeting Document : SC-CAMLR-XXII/BG/11 : Автор(ы): Delegation of the United Kingdom
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Modelling catch and effort data using generalised linear models with random cruise effects: trawl fishery for mackerel icefish (Champsocephalus gunnari) in CAMLR Area 58.5.2
parameter values was presented in WG-FSA-SAM 03-12 using Dissostichus eleginoides in Subarea 48.3 of the ... Champsocephalus gunnari in Subarea 58.5.2 is described. For the trawl catch and effort data it was found the ... , after which time there was a sharp increase in 2001 with a steady decline thereafter. The sharp increase ... in 2001 is most likely the result of the large abundance of 3 and 4 year-old fish in that year, which ...
Meeting Document : WG-FSA-03/35 : Автор(ы): S.G. Candy (Australia)
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Preliminary analysis of seabird by-catch in the South Georgia icefish fishery
Abstract: We conducted a preliminary analysis on the numbers of birds caught as a bycatch in the ... trawl fishery for icefish (Champsocephalus gunnari) in Subarea 48.3. From December 2000 – February 2001 ... birds being caught in February. GAM/GLM analysis suggested that month and vessel were significant ... could explain the number of birds caught. Differences in the numbers caught in the last three years also ...
Meeting Document : WG-FSA-01/30 : Автор(ы): D.J. Agnew, N. Ansell and J.P. Croxall (United Kingdom)
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Some notes on by-catch of fishes and salps caught by the fishery vessel Niitaka Maru in the vicinity of the South Shetland Islands (January to February 1999)
fisheries by F/V Niitaka Maru were made from 3 January to 4 February 1999 in the vicinity of the South ... Chaenodraco wilsoni were found in 4 trawl catches. On the contrary, salps were captured as by-catch in 69 ... macrura and Euphausia superba was not found in their stomachs. Abundance of salps in krill catches could ... (>2500 ind./t of krill) occurred in hauls with the low krill catch rates (Author(s): T. Iwami, S ...
Meeting Document : WG-EMM-00/54 : Автор(ы): T. Iwami, S. Kawaguchi and M. Naganobu (Japan)
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Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea
Abstract: Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas ... simply have been a function of differences in survey and data analysis techniques used at each site. More ... both SG and El. There was no apparent lag in changes in abundance at each site, and ranked between-year ... gradients of change in abundance at both locations were significantly correlated. These pronounced ...
Meeting Document : WS-AREA 48-98/11 : Автор(ы): A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK)
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Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3
Abstract: Trends in mean length and maturity stage of toothfish were examined using observer data ... from the 1998, 1997 and 1996 toothfish seasons. Toothfish are distributed down the shelf slope in ... statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... . Examination of maturity data suggests that in addition to a major spawning event in late July/August, there ...
Meeting Document : WG-FSA-98/58 : Автор(ы): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)
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Unhappy feet: the reduction of Adélie and chinstrap penguin populations in the West Antarctic Peninsula/Scotia Sea
) in the West Antarctic Peninsula/Scotia Sea area. According to this scientific paper, Adélie and ... chinstrap penguin populations have declined more than 50% during the last 30 years at study colonies in the ... South Shetland Islands. This is consistent with the declines in both species throughout the Scotia Sea ... in the abundance of their main prey, Antarctic krill, which is affected by climate change. In this ...
Meeting Document : CCAMLR-XXX/BG/21 : Автор(ы): Submitted by ASOC
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SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION
South Georgia and Shag Rocks shelves in January 2009. The results show that the diet of this normally ... low in Antarctic krill (7 % IRI) compared with similar data for the same month in 2004-2006. The ... occurrence of krill in the diet with earlier data sets (1967-1992) show that 2009 is not unique, as similarly ... poor krill years occurred in 1969, 1978 and 1991. Spatial analysis of icefish diet indicates ...
Meeting Document : WG-EMM-09/27 : Автор(ы): M.A. Collins and C.E. Main (United Kingdom)
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