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Modelling krill recruitment
, that is the recruitments over a series of years are independent, identically distributed random ... according to equation (20) above. Since the proportion of recruits is bounded 0 - 1, a beta distribution ... model is exercised for n years without exploitation prior to calculating the mean unexploited ... realisation using equations (5) and (6). The variance is adjusted according to equation (20 ) and then used ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 49–54 : Автор(ы): W.K. de la Mare
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
model outputs of withholding from a stock assessment between one and eight years of age frequency and/or ... time as more years’ data becomes available. The 2009 stock assessment of Antarctic toothfish in the ... estimated by the models arising from withholding data was found to be highest in the earlier years of stock ... years, the change in estimated biomass arising from withholding data was much smaller, with values ...
Meeting Document : WG-SAM-11/17 : Автор(ы): S. Mormede (New Zealand)
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Volume 4: CCAMLR. 1992. Statistical Bulletin, Vol. 4 (1982–1991). CCAMLR, Hobart, Australia.
is the split-year 1 July to 30 June. Split-year data are shown under the calender year in which the ... split year ends; for example, 1978 indicates the split-year 1 July 1977 to 30 June 1978. 2.5 Some ... .............................. :~.~.~~~~.~ Figure 20 Catch history of Notothenia rossii ....................... ~................. . Figure 21 ... 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Total catch reported in fine ...
Document : Site Section: Publications
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Using stationary acoustic platforms to assess precision and accuracy of acoustical krill surveys
a depth of ~20 m during daytime, while 24 % was found above ~20 m during night. A swarm detection ... approach suggested a similar pattern, 7 % of aggregated backscatter was found above ~20 m during daytime ...
Meeting Document : WG-EMM-2019/32 : Автор(ы): T. Klevjer, G. Skaret and B.A. Krafft
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Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
used to characterise the age composition. It was determined that in the initial years of exploitation ... catches and in some years (1981-1985) fisheries were based practically on recruitment. After the closure ... . In May-June 1991 the mean length was 59.2 cm, mean age was 7.4 years; some 70% of catch consisted of ... that observed in the initial years of exploitation and further closure of marbled rockcod specialised ...
Meeting Document : WG-FSA-94/04 : Автор(ы): P.B. Tankevich (Ukraine)
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Interannual changes in body fat condition, stomach content mass and distribution of minke whales in Antarctic Areas IV and V
the six years included in the study, two were categorized as years of poor body fat condition, and ... three as years of good condition. Estimated body weight gain during the feeding season in poor years was ... 25 % lower than in good years. The relationship between girth and stomach content mass in the ice ... . In Area V, in a year of high sea-ice extent, the krill-rich slope region in the western zone was ...
Meeting Document : WG-EMM-97/18 : Автор(ы): Ichii, T., Nishiwaki, S., Tamura, T., Fujise, Y., Matsuoka , K.
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Review of the technical recommendations for the Patagonian toothfish fishery in order to minimize by-catch
together socio-economic aspects and fishery history, steps implemented by each vessel to minimize avian ...
Meeting Document : SC-CAMLR-XXX/BG/10 : Автор(ы): Delegation of France
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AN ECOSYSTEM-BASED MANAGEMENT PROCEDURE FOR KRILL FISHERIES: A METHOD FOR DETERMINING SPATIALLY-STRUCTURED CATCH LIMITS TO MANAGE RISK OF SIGNIFICANT LOCALISED FISHERIES IMPACTS ON PREDATORS.
krill fisheries which draws together past experience in CCAMLR. It provides an empirical ecosystem ...
Meeting Document : WG-SAM-08/16 : Автор(ы): A. Constable and S. Candy (Australia)
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EXTRAPOLATING CONTINUOUS PLANKTON RECORDER DATA THROUGH THE SOUTHERN OCEAN USING BOOSTED REGRESSION TREES
multivariate space defined by all environmental data layers together. The multivariate statistic was used to ...
Meeting Document : WG-SAM-08/12 : Автор(ы): M.H. Pinkerton, A.N.H. Smith (New Zealand), B. Raymond, G. Hosie (Australia) and B. Sharp (New Zealand)
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An ecosystem-based management procedure for krill fisheries: a method for determining spatially-structured catch limits to manage risk of significant localised fisheries impacts on predators
krill fisheries which draws together past experience in CCAMLR. It provides an empirical ecosystem ...
Meeting Document : WG-EMM-15/36 : Автор(ы): A. Constable and S. Candy (Australia)
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