Résultats de la recherche

1. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   ) with 0% as a target level or 30–40% where no upper size limit exists. The proportional length-based ... recruitment declines linearly 0.2 Fishery parameters Season 1 Dec–30 Nov Catch levels for the constant ... such as the vari- ation in fishing mortality and recruitment, the form of the fishing selectivity ... were known exactly. The form of the selectivity functions determines directly the range of fish ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Auteur(s): Ziegler, P.E., D.C. Welsford and A.J. Constable

2. A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia

   parasitised crabs of either sex do not form part of the spawning stock, and that post- parasitised crabs do ... crabs are sterile and do not form part of the spawning stock. Parasitised crabs suffer a slightly ... do not form part of the spawning stock. The point is that given a non-zero level of infection, the ... spawning stock is already below its maximum level, even without any harvesting. 0 0 10 20 30 40 50 60 ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Auteur(s): Basson, M

3. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   usual GLM form which must be a function only of μ (i.e. including the simplest case of V(μ) = μ0 = 1 ... are obtained using an estimate of the variance of the sum of linear predictor terms used to form the ... - sible model of catch distribution, conditional on fi xed and random effects, to be used in the form of ... 20 30 40 50 -0 .6 -0 .4 -0 .2 0. 0 0. 2 0. 4 0. 6 Ship index R an do n ef fe ct e st ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Auteur(s): Candy, S.G

4. Performance and geometry of the FP-120 trawl used during UK fish stock assessment surveys around South Georgia, Subarea 48.3

   seabed. shows track of headline height a t station 30, The captain was not aware of the information In ... Pilling and Parkes 30 T I 3.5 4 4.5 Average Head Height (m) Figure 8: Regression of average head ... d'evaluation des stocks de poissons autour de la Georgie du Sud menee en 1993/94 a bord du navire marchand ... (17, 20 and 21) were logged every 30 seconds and the fourth (22) every 20 seconds. The hydrophone ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 51–69 : Auteur(s): Pilling, G. and G. Parkes

5. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL

   – trawling and longlining. The annual cycle was split into three seasons: (s1) 1 December–30 April, 5 ... Integrated stock assessment for Dissostichus eleginoides using CASAL (s2) 1 May–30 September, and (s3) 1 ... October– 30 November. These seasons were structured to accommodate the main longline fishery occurring ... 120 and 160 hauls, each of which were of approxi- mately 30 min duration, that were randomly located ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Auteur(s): Candy, S.G and A.J. Constable

6. Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

   ., 2007). As a rule, the net was generally towed at about 3–3.5 knots for 30 min on the bot- tom during ... was considered to form an annulus. The count path showing the most unambiguous annulation pattern ... dominated by a strong peak at 26 cm TL, with two other well-defined modes at 20 and 30 cm TL (Figure 3b ... 18 20 2 27 12 1 9 6 28 5 8 7 1 29 7 4 4 7 30 8 6 1 2 1 31 7 9 8 1 ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Auteur(s): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock

7. Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys

   Sampled Processed 7 7 54 37 6 5 43 32 7 6 30 27 7 7 3 6 31 Minimum and maximum sample sizes ... frozen at -30°C and later examined at the Instituto Antiirtico Argentino. For the aim of this study ... between 25 and 30 cm was also evident. At SR, the range of predominant sizes was narrower. It should be ... empty stomachs predominated in the north-western region of the SG shelf (around 54"05'S, 38"30'W in ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Auteur(s): Barrera-Oro, E., R. Casaux and E. Marschoff

8. The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys

   particular, in the southern coastal waters of the area (south of 65°30'S). Until 1988 krill biomass was ... opening and a Samyshev-Yevdokomov scientific trawl with a 30 sq. m opening. Trawling speed was 2.5 to 3.0 ... ). Dense but unstable concentrations of krill in the form of shoals and aggregations of about 0.5 miles in ... length were observed over the continental slope between 61 ° and 62°30'E. Daily catches by scientific ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Auteur(s): Bibik, V.A. and V.N. Yakovlev

9. The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters

   KalleCTBe HJIJIIOCTpaU;HH Pa3JIHlIHbIX n0.llX0.ll0B K TaKOMY aHaJIH3Y. BbIJIa BbI5IBJIeHa Ba)l{Ha5I ... -.............. _ .... " ................ " .... " .... " .......... " .... " .......... " ......... -......... " ................ " .... " ............... " .... " ................... " .... -........... " .... ~ .... -........... --............ " ..................... " .......... " ......... . . -.-.•• ~ ..••.••.•...••.• H._ ••..••• ~ ••••..•.•• a ...... ~.~ ••.... 30 1 ... -.. "'" .' .'"."."." " ....... "--.... '" .. " .. " ............ " . --. " .. ""." .......... " ... "." ..... " .... -.. " .. --." .. --............... ' ... " ---......... " ............. " ..... -.. " .. ,,' ...... . .._ ...... o IL-______________ L-______________ ~ ______________ J-______________ ~ o 10 20 30 40 dec 13 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Auteur(s): Marschoff, E. and B. González

10. Spatial distribution of management measures, Antarctic krill catch and Southern Ocean bioregions: implications for conservation planning

    management area does not provide long-term pro- tection equivalent to that of an MPA, or imply any form of ... biore- gion defined on the basis of long-term (up to 30 years) averages of time series (Grant et al ... . 2002. Rigor and Representativeness in Marine Protected Area Design. Coastal Man- agement, 30 (3): 237 ... (Figure 1a). Proposed in original form in FAO (1976); further subdivision proposed in Everson (1977 ...

    Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 1–19 : Auteur(s): Grant, S.M., S.L. Hill and P.T. Fretwell

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