Search results
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Investigating the uncertainty of age determinations for Patagonian toothfish (Dissostichus eleginoides) and the implications for stock assessment
of the matrix and a lack of smoothness in the probabilities for ages above 25 years. Positive errors now ... expanded the reference collection to include an additional 50 otoliths with a mean age above 25 years ... from the expanded reference collection. We then used estimates of spawning stock biomass (SSB) and year ... method were between the other two methods in terms of year to year variability and precision. The poor ...
Meeting Document : WG-FSA-14/46 : Author(s): P. Burch, P. Ziegler, W. de la Mare and D. Welsford (Australia)
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Relative selectivity of four sampling methods using traps and trawls for male snow crabs (Chionoecetes opilio)
methods. These methods were: (1) large-meshed commercial traps, (2) small-meshed traps, (3) bottom trawl ... small-clawed animals predominated in the trawl catches; 3) soft-shell crabs were more common in trawl ... size of the crabs caught increased with depth for all sampling methods, but especially so for traps ... ; and 5) catch per unit effort for both large- and small-clawed crabs increased with depth for all ...
Meeting Document : WS-CRAB-93/11 : Author(s): J.M. Hoenig and E.G. Dawe (USA)
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UPDATED KRILL RECRUITMENT DATA FOR THE ELEPHANT ISLAND REGION OF THE SOUTH SHETLAND ISLANDS, ANTARCTICA; 2002-2008
, with low recruitment occurring during the intervening years. Significant differences in the proportional ... recruitment indices occurred between legs within years indicative of the changing pattern of krill within ... occurring during the intervening years. Significant differences in the proportional recruitment indices ... occurred between legs within years indicative of the changing pattern of krill within the Elephant Island ...
Meeting Document : WG-EMM-08/41 : Author(s): C. Reiss (USA)
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Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations
biomass. The size of the windfall is expressed as being equivalent to a number of years of sustainable ... by the sum of the number of years in the catch series and this windfall ratio. Input information includes ... the sum of catches and associated number of years, the relative reduction in biomass during that period ... , the natural mortality rate (M, which should be,0.2 year21), and the assumed ratio of FMSY to M. These input ...
Meeting Document : WG-SAM-11/P3 : Author(s): A.D. McCall
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Length-age composition of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Island area
considerably, mean fish length was 76.0- 86.6 cm. Fish of two to 14 years old age groups were most abundant ... in catches, mean age was 8.2- 9.8 years. In the 1991/92 season fishing for the species was concentrated ... was 5.8 years. Mean length of fish taken at 540- 600 m depth was 85.8, mean age was 9.7 years. Results ... considerably, mean fish length was 76.0 - 86.6 cm. Fish of two to 14 years old age groups were most abundant ...
Meeting Document : WG-FSA-92/08 : Author(s): V.G. Prutko and V.N. Chikov (Ukraine)
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Fishing equipment, marine debris and hydrocarbon soiling associated with seabirds at Bird Island, South Georgia, 2006/07
. It is the fourteenth such annual report. As in previous years, more items of marine debris and fishing gear (mostly ... report. As in previous years, more items of marine debris and fishing gear (mostly longline fishing gear ...
Meeting Document : SC-CAMLR-XXVI/BG/18 : Author(s): Delegation of the United Kingdom
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Korean research plan for Dissostichus spp. in Subarea 48.5 in 2015/16
in this area for two years. The Republic of Korea noted that the research activities in this region had ... previously fished. In this region, the severe ice condition existed for many years and no fishing vessel ... in this area for two years. The Republic of Korea noted that the research activities in this region had ... previously fished. In this region, the severe ice condition existed for many years and no fishing vessel ...
Meeting Document : WG-SAM-15/08 : Author(s): Delegation of the Republic of Korea
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Observer coverage in CCAMLR krill fisheries from 2011 to 2015
discussion at the Commission for a number of years, as the krill fishery is the only CCAMLR fishery that does ... years comparing the number of days of fishing conducted by vessels in the krill fleet, with the number ... at the Commission for a number of years, as the krill fishery is the only CCAMLR fishery that does not require 100 ... % observer coverage. The Secretariat analysed the level of observer coverage for the past five years ...
Meeting Document : WG-EMM-16/11 : Author(s): CCAMLR Secretariat
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Effect of a shore-based sampling program on Notothenia coriiceps populations
two close but not previously sampled zones (sites 2 and 3). The fish were caught with trammel nets ... summers of 1992/93 to 1994/95 at one specific zone (site 1) with those taken in the same last summer at ... ) and 3 (x=31.8 cm) exhibited no significant differences in mean length. They were significantly larger ...
Meeting Document : WG-FSA-99/24 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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SUMMARY OF NOTIFICATIONS FOR KRILL FISHERIES IN 2010/11
year (SC-CAMLR-XXVIII, Annex 4, Paragraph 3.32), the essential information contained in krill fishery ... last year (SC-CAMLR-XXVIII, Annex 4, Paragraph 3.32), the essential information contained in krill ...
Meeting Document : CCAMLR-XXIX/19 : Author(s): Secretariat