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Commission pour la conservation de la faune et la flore marines de l'Antarctique

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  1. Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea

    S an dw ic h Is la nd s (1 3) (1 4) (1 5) (1 ) (4 ) (1 2) (9 ) (2 ) (7 ) (6 ) (5 ... 930 Antarctic Peninsula East (APE) 61.6 37.7 25 South Orkney Pelagic Area (SOPA) 808.8 24.5 6 248 ... it s (S SM U s) in S ub ar ea s 48 .1 , 4 8. 2 an d 4 .3 . T he 1 0 00 m is ... a (A PP A ); (2 ) A nt ar ct ic P en in su la W es t (A PW ); (3 ) D ra ke P ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Auteur(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins

  2. Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.

    ). For selec- tivity function (19) the parameter ranges were λ (6, 12) and σL (3, 12). Note that the a0 ... values (i.e. ‘Fix non_M’). Figures 3 to 6 show results of estimation for one run of the base-line ... the likelihood that compares actual and estimated catch-at-age numbers. 3 Estimation of M for D ... (see Branch, 2009a, 2009b): ( )1, 1 , exp+ + = - -t a t a a tN N S F M (3) ( ){ }, , 1 exp= - - -+ a ...

    Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Auteur(s): Candy, S.G.

  3. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

    , Casilla 8-V, Valparafso, Chile 2 Universidad Austral de Chile, Casilla 567, Valdivia, Chile 3 paC1 ... survey. (1) (2) (3) (4) (5) 5 So as to reduce the number of parameters, the specific ... exploitation pattern at age, ri, can be estimated by ia exp (- b· i) r· = J max(ia exp (- b· i)) (6 ... representing patterns of partial recruitment for the very old fish characteristic of longline fishing. 3 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Auteur(s): Zuleta, A.V. and C.A. Moreno

  4. Diurnal variations in biological characteristics of krill, Euphausia superba Dana, to the west of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by a biologist-observer

    . Stations I, IV and V overlapped, as did Stations III and VI. Station H was located further south. 3 ... composition of males were much stronger than for females over periods from 0 to 2,2 to 4 and 6 to 8 hrs (the ... of males (proportion of males was 32.0, 38.3 and 33.3% respectively) over periods from 6 to 8, 12 ... average size was influenced by variations in the average size of females (see Figure 6). The last curve ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 201–222 : Auteur(s): Vagin, A.V., R.R. Makarov and L.L. Menshenina

  5. Determination of Antarctic krill acoustic back-scattering cross-section

    independence of random values, where ao -4 - G ·ao (3) mean acoustic back-scattering section for the ... angle Q.n G4 min -!(7T~)2 em by substituting (6) into (5) we obtain -1 <;4 = G4min Q.n G4 ... . m~n (5) (6) (7) - 145 - This method was used in determining the acoustic section of ... measurements, the following parameters of the echo sounder were determined : p = 49 103 Palm, = 3.1 10-3 v ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 141-152 : Auteur(s): Protaschuk, V.A. and T.A. Lukashova

  6. Consideration of major issues in ecosystem monitoring and management

    ) Macaroni 0.44±0.15 5 6 78 83 84 17 16 Chinstrap ~1 (0.016–1.83) (3?) ? 68 32 Adélie ~1 (0.68 ... –1.89) 5 6 81–97 76 78 24 22 Gentoo 0.85 3 75–85 70 30 Table 3: A comparison of the ... % Age at first maturity 5–6 years 2–3 years Survivorship from juvenile to maturity ~75% ~70% (assuming ... II of the Con- vention, which is partly reproduced below: Article II, paragraph 3: Any harvesting ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Auteur(s): Everson, I

  7. The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)

    es (C L/ C W ) 64 /6 8 67 .3 /7 3. 4 Si ze -a t-m at ur ity (m m ) – fe m ... 5 13 .5 ± 5 .6   Ta bl e 3: R eg re ss io n pa ra m et er s fo r th e ... w ei gh t t o lo g le ng th a b R – sq n N or m al ♂ –8 .6 6 3. 36 ... /07 (3 days) Argos Georgia (GBR) P. spinosissima and P. formosa 0.3 August–October 2010 Tamango (RUS ...

    Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Auteur(s): Belchier, M., T. Peatman and J. Brown

  8. Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands

    Tabla 1: Figura 1: Figura 2: Figura 3: Figura4: Figura 5: Figura 6: Figura 7: 140 ... curtain drogue (4 m x 1 m) deployed at 30 m depth in order to study flow patterns at this depth. 3 ... . RESULTS 3.1 Physical Oceanography Figure 3 shows the horizontal distribution of salinity at 30 m depth ... each distance between stations along the cruise track (Figures 5 and 6). In Leg I krill tended to form ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu

  9. Estimating optimal observer coverage in the Antarctic krill fishery

    -3 2002-4 2002-5 2002-6 2002-7 2002-8 Years included in model V ar ia nc e ra tio b et w ee ... 05 46 3 22 4 13 7 61 56 30 41 12 Fe ol en t 20 05 43 1 43 6 32 6 ... , it was treated to a Box- Cox power transform of the form ij ijy z (3) with transformation ... of λ values, with the log- likelihood recorded for each fit. The value λ = 3 was chosen as that ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Auteur(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

  10. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

    (harvested species) B1,0= 6 500 B2,0= 6 500 Initial biomass (predators) P1,0 = 45 P2,0 = 45 Biomass ... k k k r P P B r P P B ζ ζ γ γ é ùé ù-ê úê ú ê úë û ê úé ùê ú-ê úê úë û ¢ ¢ ûë (3) where ...  . (4) The sequences of random variables (Equa- tions 2 and 4) are autocorrelated (Figure 3). This was ... / 1iui k i K i iKK σ α α- - , 1,2; 1,2,i k= = ¼ (6) where parameters α0, α1 and α2 specify the band ...

    Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Auteur(s): Hill, S.L. and M. Cannon

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