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1. A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia

   (mean length 43 mm), while two other hauls (E177 and E257; densities of 135 and 60 krill ... m-2 respectively) contained small and large krill (mean length 27.5 and 49.2 mm respectively). All other net ... weighted by the mean acoustic density. Second, within each region the nets are weighted to a certain ... Peninsula and Weddell Sea areas. These values used four year classes with the mean size of l + krill ... substantial differences, due in part to bias arising from a large number of krill in just one of the station ... %), while between 1994 and 1998 the number of 1+ krill found in the population increased with a very ... Paper Title:  A composite recruitment index to describe interannual changes in the population ... net hauls. Therefore, when the number of station net hauls is limited, bias is likely to be reduced if ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Author(s): Watkins, J.L

2. Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea 48.3)

   (F) different adjustments were used. Long-term mean of F, Gamma method, Pope and Shepherd method, using ... season the recruitment in the first age group was not less than long-term mean (5947 million specimens ... : a) Fishing intensity (F) in the predicted period is equal to the mean value of fishing mortality for the main ... adjustments were used. Long-term mean of F, Gamma method, Pope and Shepherd method, using F regression ...

   Meeting Document : WG-FSA-88/33 : Author(s): R. Borodin and K. Shust (USSR)

3. A review of models of Southern Ocean ecosystems: krill, ecosystems and the impacts of harvesting

   is enshrined in the principles of the Commission for the Conservation of Antarctic Marine Living Resources ... in the principles of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR ...

   Meeting Document : WG-EMM-04/67 : Author(s): S.L. Hill, E.J. Murphy, K. Reid, P.N. Trathan (United Kingdom), A. Constable (Australia)

4. Results on by-catch of fish during Ukrainian, Polish and Japanese krill fishery in the South Orkney Islands, South Georgia and Shetland Islands areas

   and Japanese by-catch samples, and its estimated value of an arithmetic mean was 11541 ind./t krill and 34588 ... to Champsocephalus gunnari and L. larseni, and its arithmetic mean was 78523076 ind./t krill and 60352790 ind ... this area, juvenile L. larseni was the most abundant and its arithmetic mean was 10247 ind./t krill. In all ... and Japanese by-catch samples, and its estimated value of an arithmetic mean was 11541 ind./t krill and 34588 ...

   Meeting Document : WG-FSA-96/19 : Author(s): Cielniaszek, Z., Pakhomov, E.A., Iwami, T.

5. Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)

   with hi fest mean density (1977/78) with the remainder, e inning with the year with lowest density, Tb ... ). Net haul abundance estimates will be re-calculated by replacing the stratified mean method ... of Elephant Island, along the permanent pack-ice zone. The mean length of these juvenile krill is 6 to 10 mm ... a dynamic flow pattern with eddies and meanders. It may be that the mean retention time for krill is much ... Paper Title:  Long-term monitoring of krill recruitment and abundance indices in the Elephant ... for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... were re-calculated applying the delta distribution approach introduced by de la Mare (1994a). The high ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Author(s): Siegel, V., W. de la Mare and V. Loeb

6. Glider-based estimates of Antarctic krill in Bransfield Strait, and the West shelf off Livingston Island, Antarctica

   -December 2018 and mid-March 2019. We compare mean biomass density (g m-2) estimates derived from gliders ... from 350 glider profiles was 25.0 g m-2, compared with the mean biomass density of 28 g m-2 collected ... estimated from two repeat glider surveys were 61.04 and 104.1 g m-2. Mean biomass density estimates from ... surveys conducted between 1997 and 2011. The mean biomass density of krill derived from restricting from ...

   Meeting Document : WG-EMM-2019/13 : Author(s): C. Reiss, A. Cossio, G. Cutter, J. Walsh and G. Watters

7. Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic

   , mean catch rates of up to 5 tonnes/hour have been reported by Otero et al. (1982) during spring ... "S, in the Malvinas/Falklands current, though reported mean catch rates are less than 0.3 tonnes/hour (Otero et al ... ', 30 mm gap) spaced at 1 m Table 1: Study details: vessels used, date, coordinates, mean depth ... , and a mean length of 52 cm TL (Cordo, 1995). In zone SG1 (<300 m deep), data from the South Georgia shelf ... principal fish species in the diet of D. eleginoides on the Argentinian continental shelf were nototheniids ... ). It was also found that the diet of D. eleginoides varied in relation to its size and water depth in ... Paper Title:  Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in ... the southwestern Atlantic Abstract / Description:  The diet of Patagonian toothfish (Dissostichus ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Author(s): García de la Rosa, S.B., F. Sánchez and D. Figueroa

8. Interannual variability of polynya extent in the Antarctic Ocean

   and converted into the yearly mean. The time series of the yearly mean in the whole Antarctic Ocean are trending ... series of polynyas extent per a day were calculated from 1978 to 1998 and converted into the yearly mean ... . The time series of the yearly mean in the whole Antarctic Ocean are trending upper after the latter half ...

   Meeting Document : WG-EMM-01/34 : Author(s): M. Naganobu and K. Segawa (Japan)

9. Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region

   1). Depth of capture was taken to be the mean of the depth recorded on the fishing vessel at the start ... and Fournier, 1981), and mean coefficient of variation (CV) (Chang, 1982), were calculated and bias plots ... for this to be meaningful. To assess the adequacy of the stomach samples for statistical analysis of diet variations ... individuals (Table 7; Figure 9). The low number of specimens available, especially for male fish, means ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... CCAMLR Subareas 88.1 and 88.2. There was a small but significant increase in the proportion of M ... , Macrouridae) in the Ross Sea region Abstract / Description:  Samples collected in 2008 led to the ... as M. whitsoni. The first comparison of the distribution and ecology of the two species of Macrourus ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Author(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown

10. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region

    , by stepwise optimization, certain variables of single components of the distribution mixture (means, standard ... % led to four geographical coherent clusters which were interpreted to be biologically meaningful ... unweighted mean length frequency distribution calculated from the above relative distribution would bias ... were established in each cluster. The stratified mean (Saville, 1977) was then determined for each ... Paper Title:  Estimation of krill (Euphausia superba) mortality and production rate in the ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ... ratio of 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within ... biomass (including production) of 4.3 and 5.0 x 10 6 tonnes passing through the survey area during the ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.

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