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1. Phytoplankton standing stocks in relation to krill in Antarctic waters

   Abstract:  Investigations on krill trawl operations in the southern ocean were accompanied by the ... waters with temperature ranging from 0 to 3° C and high nutrient content. Phytoplankton cell counts in ... fluctuations in phytoplankton and zooplankton standing stocks followed a similar trend. Marked drop in ... phytoplankton and zooplankton in the region of krill swarm however showed active feeding by the latter on these ...

   Meeting Document : WG-EMM-98/34 : Автор(ы): X.N. Verlecar, R. Vijayakumar, F. Saldhana and L. Martins (India)

2. VARIATION IN DEMERSAL FISH SPECIES RICHNESS IN THE OCEANS SURROUNDING NEW ZEALAND: AN ANALYSIS USING BOOSTED REGRESSION TREES

   ‘stochastic gradient boosting’). Depth was the single most important environmental predictor of variation in ... moderately high richness between 400 and 1100 m. Richness was higher both in waters with high surface ... concentrations of chlorophyll a and in zones of mixing of water bodies of contrasting origins. Local variation in ... temperature was also important, with lower richness occurring in waters that were cooler than expected given ...

   Meeting Document : WS-VME-09/P04 : Автор(ы): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.

3. Optimization of the sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins

   Abstract:  Based on preliminary results of prey size in Adélie penguins, sampling designs intended ... for detection of interannual variations in prey mean sizes and penguin size related selectivity are ... analysed for the optimal allocation of observations at each level in nested designs. Recommended numbers ... x date interaction equal to the variance component for penguin in dates obtained from a previous ...

   Meeting Document : WG-CEMP-90/09 : Автор(ы): E. Marschoff and B. Gonzalez (Argentina)

4. Proposal for a longline survey on toothfish in Statistical Subarea 48.6 in 2017/18

   Abstract:  Norway proposes a plan to investigate the toothfish populations in the Statistical ... Subarea 48.6 in 2017/18 using standardised longline gear, established tagging techniques, and pop-up tags ... mapping, and the study will adhere to principles and guidance expressed in CM 41-01. In future years the ... that in 2018 a new Norwegian vessel will be available, equipped with advanced technology for sampling ...

   Meeting Document : WG-SAM-17/06 : Автор(ы): Delegation of Norway

5. A development of catch per unit effort (CPUE) trends that may be useful in stock assessment for Dissostichus mawsoni in Subarea 48.6

   these data to extract annual time series trends that may be of use in the fitting of stock assessment ... models for Dissostichus mawsoni (D. mawsoni) in the area.  The entire fishing area in 48.6 which is ... subarea. The trends from these models reflect stable to a slight increase in CPUE since 2013 which might ... be reflection better management since research block were introduced in 2012/2013 fishing season ...

   Meeting Document : WG-SAM-2019/37 : Автор(ы): S. Somhlaba, K. Leach, M. Bergh, T. Okuda, T, IIchi, R. Sarralde and T. Namba

6. Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2019

   ) around Heard Island and McDonald Islands (HIMI) was conducted in CCAMLR Division 58.5.2, with the ... selected station points. However, only 5 of 18 stations were sampled in Gunnari Ridge since the catch limit ... for Champsocephalus gunnari (mackerel icefish) in Division 58.5.2 was reached prior to the completion ... higher than last year’s catch even though less than a third of the stations were completed in Gunnari ...

   Meeting Document : WG-FSA-2019/03 : Автор(ы): G.B. Nowara, T.D. Lamb and P. Ziegler

7. Results of krill fishery in Subarea 48.2 in the 2009 season based on data of the Russian vessel Maxim Starostin

   Abstract:  Results of Russian krill fishery in the area 48.2 in the season of 2009 (March ... – beginning of June) on the cruise data of trawler “ Maxim Starostin ” are discussed in the paper. The vessel ... hydrometeorological and ice conditions are given in the paper. Author(s):  S.Yu. Gulyugin, V.E. Polonskiy and S.M ... . Kasatkina (Russia) Title:  Results of krill fishery in Subarea 48.2 in the 2009 season based on data of the ...

   Meeting Document : WG-EMM-10/08 : Автор(ы): S.Yu. Gulyugin, V.E. Polonskiy and S.M. Kasatkina (Russia)

8. Analysis of longline fleet operation on the Patagonian toothfish (Dissostichus eleginoides) in the subarea of the South Georgia Island (48.3) in 1989–2003

   . Taken the intensity of fleet operation as an example in the sub-area, it was confirmed a decrease in ... decrease in catch per unit value and necessity of the more attentive approach to the assessment of the ... state of the toothfish population in this area of traditional fishing and more precautionary approach to ... operation on the Patagonian toothfish (Dissostichus eleginoides) in the subarea of the South Georgia Island ...

   Meeting Document : WG-FSA-03/98 : Автор(ы): N.V. Kokorin and A.F. Petrov (Russia)

9. Note on maturity of krill in relation to interannual fluctuations of food environment in the seas around the South Shetland Islands

   Islands is discussed. Data during 91/92 austral summer shows that when chlorophyll concentration in ... fraction larger than 2um was high, feeding activity of krill was also high in the natural environment. 5 ... fluctuations of maturity populations are governed by the food environment, the phytoplankton stock in the size ... fraction larger 1 in krill namely by than 2um. Author(s):  M. Naganobu and S. Kawaguchi (Japan) Title ...

   Meeting Document : WG-KRILL-93/27 : Автор(ы): M. Naganobu and S. Kawaguchi (Japan)

10. Results of scientific observation in Antarctic krill fishery in 2010/11: II. analysis of variability of krill size and fish by-catch

    ) incorporated in a state-space model that separates biological process error from fishery process error and ... observation error. The parameters of the model were estimated by the Markov chain Monte Carlo (MCMC) method in ... krill length model, some parameters did not converge well in the bycatch fish model. The interaction ... is no clear difference among cruises within a vessel. The uncertainty in parameter estimation is ...

    Meeting Document : WG-EMM-12/67 : Автор(ы): T. Okuda and M. Kiyota (Japan)

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