Resultados de la búsqueda
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Proposal of the Russian Federation to open Subarea 88.3 for exploratory fishery of Dissostichus spp.
. Collected in research fishing data contributes to the achievement of the main objectives of research for the ... of hypotheses about the ratio of fish in the area and the total stock as well as studying of ... calculated by the accepted in SC-CCAMLR-XXX/5 p.2.40 (ii) formula. Value of toothfish`s stock by SSRUs and ... all details of stock assessment methods are described in the present work. Author(s): Delegation of ...
Meeting Document : WG-FSA-13/12 : Autor(es): Delegation of the Russian Federation
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Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the South ... at the beginning of fishing operations each season. In summer, biological factors that affect product ... Paper Title: Analysis of krill trawling positions north of the South Shetland Islands (Antarctic ... operations concentrated on the outer shelf in the early 1980s, along the shelf slope in the mid to late 1980s ... to the small number of data points (<5). In December the mean STP was positively correlated with ... in the 1990/91 and 1994/95 seasons (Table 1). Interestingly, the monthly variation of mean STP for ... of commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the ... in the season. Trawling positions seemed to be primarily governed by the distribution of larger ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Autor(es): Kawaguchi, S. and K. Segawa
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Homogeneity of body length composition of Antarctic krill within the commercial zone
Abstract / Description: The homogeneity of krill (Euphausia superba) length composition in commercial ... that sampling from one part of the haul provides a reasonable estimate of length composition in the ... Paper Title: Homogeneity of body length composition of Antarctic krill within the commercial zone ... trawl catches (hauls) was investigated by comparing length compositions from different parts of the same ... . Nocturnal changes in the mean length of a euphausiid population: vertical migration, net avoidance, or ... ) in 53 out of 60 hauls. Therefore it is concluded that sampling from one part of the haul provides a ... reasonable estimate of length composition in the entire haul. In contrast to small variations in length ... different parts of the haul as possible in order to obtain an unbiased estimate of the catch length ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Autor(es): Ichii, T.
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Reassessment of important population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on time series of surveys and fishery data
parameters and recruitment of Patagonian toothfish, Dissostichus eleginoides, in the Heard Island region. A ... new survey of the Heard Island Plateau was undertaken in May- June 2001, providing the sixth survey ... -estimated in the past. An estimate of natural mortality indicates that mortality of young fish, ages 3-8 ... , may be much greater than older fish. This may need to be taken account of in the assessment process ...
Meeting Document : WG-FSA-01/73 : Autor(es): A.J. Constable, R. Williams, T. Lamb, I.R. Ball and E. van Wijk (Australia)
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Homogeneity of body length composition of Antarctic krill within the commercial haul
Abstract: The homogeneity of krill length composition in commercial trawl catches (hauls) was ... difference (P>0.05) in 53 out of 60 hauls. Therefore it is concluded that sampling from one part of the ... haul provides a reasonable estimate of length composition in the entire haul as a whole. In contrast to ... investigated by comparing length compositions from different parts of the same haul. There was no significant ...
Meeting Document : WG-KRILL-90/11 Rev1 : Autor(es): T. Ichii (Japan)
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Preliminary analysis of toothfish catch, CPUE, size structure and mark-recapture data from SSRUs 486A and 486G, with comments on the sustainability of different harvest levels
in Subarea 48.6 north of 60°S (the combined SSRUs 48.6A and 48.6G). A preliminary assessment for D ... . mawsoni in Subarea 48.6 south of 60°S (the combined SSRUs 48.6B through 48.6E) is given in an Appendix. An ... track of the number of tagged animals in the population and to predict the number of recaptures per year ... possible given the available information. Actual assumptions are set out in this document. CPUE data are ...
Meeting Document : WG-FSA-12/31 : Autor(es): E. Thomson and M. Bergh (South Africa)
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Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
/81 to 1999/2000 seasons in the area to the north of South Shetland Islands were analyzed in relation ... the shelf across to the outer shelf in the early to late 1990’s. Intra-annual variation of trawling ... krill, especially at the beginning of the operation each season. In summer, biological factors that ... Abstract: Inter- and intra-annual variability of commercial krill trawling positions for the 1980 ...
Meeting Document : WG-EMM-01/35 : Autor(es): S. Kawaguchi and K. Segawa
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Seabird and longline interactions: effects of a bird-scaring streamer line and line shooter on the incidental capture of northern fulmars Fulmarus glacialis
significantly among setting methods. These results should also be applicable to the bycatch of Fulmarus spp. in ... line and a line shooter was investigated in commercial longlining in the northern Atlantic off the ... coast of Norway. We compared the bycatch rate of northern fulmars Fulmarus glacialis, the loss rate of ... baits to fulmars and the catch rates of fish target species among lines set with either of these ...
Meeting Document : WG-FSA-01/78 : Autor(es): S. Løkkeborg (Norway) and G. Robertson (Australia)
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ANALYSIS OF ICE-FISH (CHAMPSOCEPHALUS GUNNARI) SPATIAL DISTRIBUTION FOR OPTIMIZATION OF THE BOTTOM TRAWL SURVEY SAMPLING
Abstract: The spatial distribution characteristics of ice-fish in the near-bottom layer are ... horizontal and vertical fish distribution in the near-bottom layer of the survey area is shown. Influence of ... addition, the author discuses the results of bottom trawl surveys carried out in the South Georgia area ... heterogeneity of fish distribution in the near-bottom layer relative to the fishing gear operation zone (Russian ...
Meeting Document : SG-ASAM-09/07 : Autor(es): S. Kasatkina (Russia)
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Development of methods for evaluating the management of benthic impacts from longline fishing using spatially explicit production models
Abstract: An important management objective for CCAMLR in the high seas region of the Antarctic ... , and interpret. In general, the results of the simulations suggested that management action of areal ... changes in the distribution of future fishing may result in alternative impacts or how different ... size of these impacts in the scenarios tested were small, we recommend that research be focused, at ...
Meeting Document : WG-SAM-10/19 : Autor(es): A. Dunn, S.J. Parker and S. Mormede (New Zealand)