Résultats de la recherche
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Survey estimates of recruitment of toothfish in Subarea 48.3
Abstract: We reanalysed 16 groundfish surveys at South Georgia to determine whether recruitment ... several unexplainable errors. A new, corrected, series of recruitment estimates was derived using new ... procedures and 6 strata (3 depth strata each at Shag Rocks and South Georgia). It is easy to spot, visually ... , the modal progression of peaks in the length densities corresponding to cohorts assessed by sequential ...
Meeting Document : WG-FSA-SAM-04/16 : Auteur(s): Collins, M., Wakeford, R.C., Moir-Clark, J., Belchier, M., Agnew, D.J.
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Estimates of local biomass, including estimates of uncertainty, for Antarctic (Dissostichus mawsoni) and Patagonian (Dissostichus eleginoides) toothfish in research blocks in Subareas 48.2, 48.6, 58.4 and 88.3
-seabed area method parameter values that were agreed at WG-SAM-17, the estimates of biomass in the ... Abstract: This paper includes updated local biomass estimates of toothfish populations with ... at WG-SAM-16 with revisions to the CPUE-by-seabed area parameter values agreed at WG-SAM-17. The ... relevant Research Blocks have increased relative to the estimates that were presented at WG-FSA-16. The ...
Meeting Document : WG-FSA-17/42 : Auteur(s): CCAMLR Secretariat
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Estimation of the incidental capture of seabird species in commercial fisheries in New Zealand waters, 2002/03
operations (95% dead). The trawl-caught seabirds were from at least eight target fisheries, four of which had ... Abstract: Ministry of Fisheries observers reported 595 seabird captures from observed fishing ... ) trawl fisheries accounted for 87% of observed trawl-caught seabirds. Incident rates (expressed as the ... percent of observed fishing operations with seabird captures) for longline fisheries in 2002–03 were ...
Meeting Document : WG-FSA-04/57 : Auteur(s): S.J. Baird (New Zealand)
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By-catch analysis as a part of progress report for the research fishery of Dissostichus spp. in Subarea 48.6 by Japan and South Africa during 2012/13–2016/17
AIC criteria indicates that the number of by-catch GRV individuals is higher at southern research ... highest at research blocks 48.6_1. As temporal change of by-catch, only GRV shows obvious decrease in ... Abstract: This paper reports the preliminary results of by-catch analysis as a part of progress ... report for the research fishery of Dissostichus spp. in Subarea 48.6 by Japan and South Africa during ...
Meeting Document : WG-SAM-17/44 : Auteur(s): T. Okuda, S. Somhlaba and T. Ichii
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A comparison of densities and length distribution of the Champsocephalus gunnari stock in Subarea 48.3 between years 1994 and 1995
depth strata in the South Georgia Islands shelf, while density remained stable at Shag Rocks. The fit of ... Abstract: Mean densities and length structure of Champsocephalus gunnari obttained in the 1994 ... determined by a search procedure yielding randomly selected clusters of stations located within the 50–150 ... design. Forty five stations in the first cruise and 48 in the second were analyzed. Of these, 51 pairs of ...
Meeting Document : WG-FSA-95/34 : Auteur(s): Marschoff, E., Calcagno, J., Gonzalez, B.
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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
Poisson mass distribution function. The bulk of the model parameters are held constant at levels reported ... Abstract: Available catch, effort, catch-at-size and tagging data for Statistical Subarea 48.6 ... 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 ...
Meeting Document : WG-FSA-12/31 : Auteur(s): E. Thomson and M. Bergh (South Africa)
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CCAMLR Bioregionalisation Workshop (Brussels, Belgium 13 to 17 August 2007) Update of benthic bioregionalisation of the Southern Ocean
the process and results of the primary benthic regionalisation completed at the Workshop and ... incorporated at the Workshop. The process and results of evaluating the physical regionalisation with ... Abstract: At the CCAMLR Bioregionalisation Workshop, 13-17 August 2007, it was agreed that ... physical variables could be used to produce primary physical regionalisations of the Southern Ocean and ...
Meeting Document : SC-CAMLR-XXVI/BG/28 : Auteur(s): Co-conveners, CCAMLR Bioregionalisation Workshop
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Assessment of the status of the Champsocephalus gunnari stock in the South Georgia area for the 1990/91 season and TAC calculations for the 1991/92 season
indices from trawl surveys in tuning the VPA. The C. gunnari stock at the start of the 1990/91 season is ... estimated at 184 thousand tonnes. Calculation of TAC was carded out keeping in mind the change to the ... . gunnari is advised for an optimal regime of fishing operations at a level of F0.1 = 0.65. Author(s): P.S ... . Values of catch/effort by age group and by year of fishing were used in conjunction with abundance ...
Meeting Document : WG-FSA-91/27 : Auteur(s): P.S. Gasiukov (USSR)
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DEVELOPMENT AND IMPLEMENTATION OF AN ACCREDITATION FRAMEWORK FOR PARTICIPATION IN THE CCAMLR SCHEME OF INTERNATIONAL SCIENTIFIFC OBSERVATION
-conveners of the ad hoc Technical Group for At- Title: DEVELOPMENT AND IMPLEMENTATION OF AN ACCREDITATION ... Abstract: When establishing the ad-hoc Technical Group for At-Sea Operations (TASO), the ... Scientific Committee tasked it with the development of minimum standards to facilitate accreditation of ... observer programs participating in the CCAMLR SISO. At its 2009 meeting, TASO requested that the TASO co ...
Meeting Document : SC-CAMLR-XXVIII/BG/09 : Auteur(s): Co-conveners of the ad hoc Technical Group for At-
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Analysis of dietary overlap in Antarctic fish (Notothenioidei) from the South Shetland Islands: no evidence of food competition
fish assemblages at the South Shetland Island area. Using tyler’s (1972) method, the reoccurrence of ... main and secondary prey among fish predators was 33% in summer and 37% over the year at Potter Cove; 25 ... % in summer and 7% in winter at Admiralty Bay; and 20% in autumn/winter around Elephant Island ... . Likewise, using the “S” index of Linton et al. (1981) the diet similarity between most species pairs is ...
Meeting Document : WG-FSA-03/13 : Auteur(s): E. Barrera-Oro (Argentina)