Résultats de la recherche
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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
recent years. This suggests that fishing at the trigger level would be equivalent to a long-term ... excessive concentration of catch at the subarea scale. Finer-scale management might be necessary to manage ... 1981/82 48.3 256 206 1986/87 312 134 1986/87 48.4 10 1982/83 19 1972/73 Total 619 465 676 303 ... of the regional biomass in recent years. This suggests that fishing at the trigger level would be ... fished stocks. Fished stocks must be maintained at or above the level ‘which ensures the greatest net ... . The ‘ecological relationships between harvested, dependent and related populations’ must be main ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Auteur(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins
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Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
relationships. In the authors’ opinion the model could be used to give a first indication of the absolute ... abundance of P. antarcticum in the Ross Sea. A critical point is the decision rule to be used to ... ), some sizes of P. antarcticum could be confused acoustically with E. crystallorophias, but not with E ... 21 41 8 45 3 20 9 56 93 3 30 11 5 47 13 7 % b y nu m be r 82 .3 % 82 .9 ... could be used to give a first indication of the absolute abundance of P. antarcticum in the Ross Sea. A ... critical point is the decision rule to be used to differentiate P. antarcticum from Euphausia superba and ... - frequency decision criterion described in Azzali et al. (2004), some sizes of P. antarcticum could be ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Auteur(s): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi
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Chapter 7: Organisation and business practices of CCAMLR
of managing the business of the Scientific Committee through an informal executive group be ... Commission Bureau be established involving the Scientific Committee Chair, the chairs of the standing ... living resources) should be primarily developed through mechanisms other than the annual work program of ... Committee be made available to the public, unless a Member requests a paper to have restricted access, or ...
Page : Site Section: The Organisation
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Australian research on Antarctic bird and seal diets
continuing studies will be useful to assess the natural variability of the system. Around the sub-Antarctic ... penguins (by split year). 81/82 82/83 83/84 84/85 85/86 86/87 87/88 Overall weight(g) 450 141 202 114 ... of prey populations is thus very limited, although continuing studies will be useful to assess the ... HeOnYOJIHKOBaHHhle ,l{aHHhle CBe,l{eHhI BOe,l{HHO, B pe3YJIbTaTe "4erO B03HHKaeT P.H,l{ Ba)l(HbIX BOnpOCOB. B ... 3aJIHBe I1pIO,l{C, KOTOPhIH .HBJI.HeTC.H lleHTpOM paHOHa HCCJIe,l{OBaHHH nepBOCTeneHHOH Ba)l(HOCTH ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Auteur(s): Williams, R.
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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
(determined by VPA) and fishing effort is described. The intersect of this regression must be equal to zero if ... estimate of the intercept of the regression is other than zero. A bias in the intercept will be positive if ... . 78 Table 1. Age composition of catches of C. gunnari (n x 1()6). 82/83 83/84 84/85 85/86 86/87 ... ) for C. gunnari in Subarea 48.3 82/83 83/84 84/85 85/86 86/87 87/88 88/89 89/90 1 29.7 35.8 23.4 ... mortality rate of C. gunnari in Subarea 48.3. 82/83 83/84 84/85 85/86 86/87 87/88 88/89 89/90 1 0.036 ... standardised effort. Year Total catch Effort 80/81 29464 14142 81/82 47454 7182 82/83 131576 20420 83/84 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Auteur(s): Gasyukov, P.S. and R.S. Dorovskikh
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
uncertainty, which must be taken into account when it is used. The sources, assumptions and calculations at ... most others, is associated with considerable uncertainty, which must be taken into account when it is ... models must be spatially resolved at least to the scale of SSMUs and must represent krill and predator ... species must also be parameterised. The models must also account for uncertainties associated with the ... from 1 April (winter). However, natural mortality rate estimates tend to be annual rather than ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Auteur(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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SC-CAMLR-SSP/5 – Part II, 1988
1978/79 1979/80 1980/81 1981/82 1982/83 1983/84 1 0,35 24,7 26,3 27,8 38,3 32,8 20,5 31,1 36,5 2 ... : B0312acT 2 90 2 20 2 60 3 60 1980/81 1981/82 1982/83 1983/84 17,02 5,87 25,97 98,63 71,49 159,37 ... /77 1977/78 1978/79 1979/80 1980/81 1981/82 1982/83 1983/84 1 0,35 0,0000 0,0258 0,0002 0,0421 ... /77 1977/78 1978/79 1979/80 1980/81 1981/82 1982/83 1983/84 1 2 3 4 5 6 HToro B03paCT- Ha5I ...
Document : Site Section: Publications
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An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL
appropriate, since SLOF could not be removed to an acceptable degree. The issues concerning the effect of the ... respectively. Model parameters and estimation The parameter set to be estimated by CASAL consisted of B0 pre ... = 1) and, therefore, B0. As a result, the estimate of B0 will be sensitive to shifts in the ... respectively, it can be seen from Tables 3 and 4 that although the estimate of B0 is similar for these two ... data was not considered appropriate, since SLOF could not be removed to an acceptable degree. The ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Auteur(s): Candy, S.G and A.J. Constable
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Australia: An integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2
results 9. MCMC results Model B0 SSB Status Catch limit 2015 Assessment 87 077 (78 500-97 547) 0.64 ... 80 82 76 66 68 70 72 74 78 62 64 80 82 76 Longitude(°E) L a ti tu d e ... to be able to distinguish between signals in biomass and year-class strength (YCS) in the survey ... assuming all fish of stage ≥ 2 are mature (black) and all fish stages ≥ 2 will be mature at their age + 2 ...
Document : Site Section: Meetings
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
JAN 78 FEB 82 MAR 83 NOV 83 MAR 85 MAR 85A MAY 86 MAY 86A NOV 87 NOV 87A JAN 88 FEB 89 DEC ... JAN 78 FEB 81 NOV 83 MAR 85 MAR 85A MAY 1986 NOV 87 NOV 87A FEB 89 DEC 89 JAN 90 FEB 90 ... 1982/83 1980/81 1984/85 Reject HQ Reject H, Reject H. Reject H. Accept H. level has to be ... be verified, as another assumption of the krill yield model is that the statistical distribution of ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Auteur(s): Siegel, V., W. de la Mare and V. Loeb