Résultats de la recherche
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Avoidance of incidental mortality of seabirds and the implementation of Conservation Measure 169/XVII in Statistical Subarea 88.1 in the 1998/99 season
Dissostichus spp. in Sub-area 88.1. Daylight setting was allowed south of 65°S in Sub-area 88.1 under special ... provisions in Conservation Measure 169/XVII. The provisions included strictly applied line-weighting regimes ... and rigorous monitoring of line sink rates. In the trials, two autoline vessels set weighted longlines ... in Statistical Sub-area 88.1 between 30th December 1998 and 27th February 1999. Time depth recorders ...
Meeting Document : WG-FSA-99/35 : Auteur(s): J. Molloy and N. Smith (New Zealand)
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Assessment of yield and status of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean: implications for managing by-catch in CCAMLR fisheries
data were taken from a trawl survey conducted at Macquarie Island in 1999. Where parameters were not ... elsewhere in the world. The trawl survey data was used to calculate estimates of biomass and density for the ... catch rates of M. carinatus in longline fisheries targeting Dissostichus eleginoides. Applying the ... critical y to the mean density observed in the survey results gives a catch rate of 5.81 kg/km2 which ...
Meeting Document : WG-FSA-99/69 : Auteur(s): E.M. van Wijk, A.J. Constable, R. Williams and T. Lamb (Australia)
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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 : Auteur(s): X.N. Verlecar, R. Vijayakumar, F. Saldhana and L. Martins (India)
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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 : Auteur(s): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.
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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 : Auteur(s): E. Marschoff and B. Gonzalez (Argentina)
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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 : Auteur(s): S.Yu. Gulyugin, V.E. Polonskiy and S.M. Kasatkina (Russia)
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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 : Auteur(s): Delegation of Norway
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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 : Auteur(s): S. Somhlaba, K. Leach, M. Bergh, T. Okuda, T, IIchi, R. Sarralde and T. Namba
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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 : Auteur(s): N.V. Kokorin and A.F. Petrov (Russia)
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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 : Auteur(s): M. Naganobu and S. Kawaguchi (Japan)