Résultats de la recherche

1. Phytoplankton distribution in the mixed layer: implication to krill abundance

   now stands, is highly complex with many degrees of freedom. The basic concept underlying our ... favorably with observations. Since the Eulerian models inherently deal with averaged spatial distributions ... incorporate these complex trajectories into our experimental designs; and we need to cooperate with physical ... knowing c, for our case from the Ekman layer model, u can be evaluated with I. The energy ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 331–356 : Auteur(s): Yamazaki, H. and T.R. Osborn

2. Statistical problems in krill stock hydroacoustic assessments

   by adjusting the estimate by the ratio of the old and new target strengths. Surveys are conducted ... be in conflict with optimum distribution of effort for statistical sampling methods. Zooplankton ... and nekton populations are seldom, if ever, random in their distribution with respect to the sampling ... behave as one large patch with variable discontinuities within some definable boundary. These large ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Auteur(s): Macaulay, M.C.

3. Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass

   transects with the direction of the transect perpendicular to the long-axis of the island. Nine major ... taken during the survey period is shown in Figure 2. Most of the krill were small, with a mean length ... krill distribution can be considered random with respect to the transects. The equations can be ... is found offshore and is associated with the colder water regions to the east. 3.2 Kriging Analysis ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Auteur(s): Murphy, E., I. Everson and A. Murray

4. A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty

   the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... from the model are compared with existing analyses from the krill yield model. The model can include a ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... fishing mortality. Results from the model are compared with existing analyses from the krill yield model ... considered that a fishing mortality consistent with an escapement of 50% of the spawning stock biomass was ... associated with these objectives provide the foundation for incorporating uncertainties regarding ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Auteur(s): Constable, A. and W.K. de la Mare

5. Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).

   distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... the management of krill fisher- ies. This includes locating areas with high and low krill spawning ... association with particular water masses indicated that age 2+ krill dominated in cold Weddell Sea waters in ... 2009 (Figure 1). Krill were caught using com- mercial trawls with 14–24 mm mesh size at depths ranging ... deck), pumping the catch out of the codend with the net lifted to the surface near the vessel and the ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Auteur(s): Sologub, D.O. and A.V. Remeslo

6. Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons

   000 legal-sized male crabs/n mile 2, and there was a lot of uncertainty associated with these ... associated with these estimates. In general, t l ~ e experimental harvest regime was successful. The regime ... fond marin en fonction de la profondeur; les extrapolations doivent tenir compte de l'emplacement. Les ... covered with 8.9 cm (stretch measure) mesh, but the two entrance tunnels were covered with 7.6 cm mesh ... with frozen herring and the carcasses of various fishes caught as by-catch. Haul-specific soak times ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Auteur(s): Watters, G

7. Some comments on the procedure for testing estimators of krill abundance which utilise survey data

   computer generation of krill distribution patterns, which are compatible with existing information on the ... computer generation of krill distribution patterns, which are compatible with existing information on the ... variations, with effort allocated so as to minimise the anticipated variance. Further, within any stratum ... procedure proposed, to obtain an abundance estimate; and (iv) comparing that abundance estimate with the ... spatial correlation patterns exhibited by actual krill distributions are compatible with a simple two ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 191–205 : Auteur(s): Butterworth, D.S., D.L. Borchers and D.G.M. Miller

8. Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl

   the krill distribution field with high biomass of aggregations was observed in the western part of the ... the krill distribution field with high biomass of aggregations was observed in the western part of ... 48.3. The data on krill distribution were collected simultaneously with complex oceanographic data ... eastern Scotia Sea and around South Georgia. In addition, a zone with krill biomass of 100-1 000 g / l ... biomass in Subarea 48.3 was rather significant and reached two orders of magnitude, with a minimum (0.6 ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Auteur(s): Sushin, V.A. and K.E. Shulgovsky

9. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data

   (Euphausia superba) associated with the daylight phase over the diurnal cycle (i.e. brightness categories ... vertical migration and aggregation of Antarctic krill (Euphausia superba) associated with the daylight ... and swarming associated with variations in daylight levels. In this study, average seasonal ... variation in diurnal vertical migration and aggregation of Antarctic krill associated with the daylight ... an unbroken sequence. For krill harvesting, midwater trawl nets with a mouth opening of 235.5–1 ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 163–172 : Auteur(s): Taki, K., T. Hayashi and M. Naganobu

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

    weighting were investigated using haul-level estimated effective sample sizes with, additionally ... data. A key uncertainty is the number of ages fully selected by the main survey series. With all the ... weighting were investigated using haul-level estimated effective sample sizes with, additionally ... tag data. A key uncertainty is the number of ages fully selected by the main survey series. With all ... ). Assessments of fish stocks using all avail- able data are becoming common-place with the advent of maximum ... projections across uncertainty in parameter values uses sample sets of parameters that are consistent with ...

    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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