Résultats de la recherche
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Descriptive analysis of acoustic data collected during the 2003 exploratory fishery for toothfish in the Ross Sea
Abstract: This report presents results from a pilot study to determine the feasibility of ... . These analyses focused on the subset of acoustic data collected when setting longlines so acoustic ... recordings could be compared with longline catches. Data quality was generally good. Of the 84 line ... issues with data quality were interference from another echosounder, and the occurrence of a double ...
Meeting Document : WG-FSA-03/28 : Auteur(s): R.L. O’Driscoll and G.J. Macaulay (New Zealand)
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An assessment of temporal variability and interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island
Abstract: We examined temporal variability in a series of CEMP parameters collected over the ... the correlation of each parameter with breeding success. Breeding success was measured in terms of 1 ... ) the absolute number of chicks on the island which fully crèche and 2) the number of chicks crèched per ... nest with eggs. We found a low degree of correlation between incubating and brooding nest counts which ...
Meeting Document : WG-EMM-02/46 : Auteur(s): L.M. Emmerson, J. Clarke, K. Kerry and C. Southwell (Australia)
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Fishing intensity of Russian fleet krill fishery in Subarea 48.2 and 48.3
Abstract: The purpose of this paper was estimating commercial fleet impact on krill population in ... and 48.3 amounted to at least 95% of total catch. The calculations were based on the Soviet fleet haul ... -by-haul data using a model of probabilistic-statistical theory of fishery systems developed in the ... AtlantNIRO. Intensity of commercial fleet impact on krill population, on biomass and density of krill ...
Meeting Document : WG-EMM-02/62 : Auteur(s): S.M. Kasatkina and V.F. Ivanova (Russia)
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An updated assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity and extension taking commercial catch-at-length data into account
Abstract: The CPUE-based Age-Structured Production Model (ASPM) assessment of this resource by ... Brandão et al. (2001) is updated to take account of further catch and effort data that have become ... available over the past year. This leads to an improved picture of resource status compared to a year ... previously, but a spawning biomass nevertheless still estimated to be heavily depleted and at a level of only ...
Meeting Document : WG-FSA-02/76 : Auteur(s): A. Brandão, D.S. Butterworth, B.P. Watkins and L. Staverees (South Africa)
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Variability of krill biomass estimates in repeated mesoscale surveys in relation to CCAMLR-2000 Survey
Abstract: One of the important problems in interpreting CCAMLR-2000 results is how they reflect ... the krill biomass status, is it high, medium or low at the present time. The comparative analysis of ... krill biomasses derived from trawl catches was carried out; retrospective data of three Soviet surveys ... , covering the main part of the CCAMLR-2000 area, were used: RV “Argus” (27.01.84-16.03.84) and RV “Evrika ...
Meeting Document : WG-EMM-01/28 : Auteur(s): V.A. Sushin, F.F. Litvinov (Russia) and V. Siegel (Germany)
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A circumpolar pelagic regionalisation of the Southern Ocean
Abstract: This short note describes a circumpolar, pelagic regionalisation of the Southern Ocean ... south of 40°S, based on sea surface temperature, depth, and sea ice information. The results show a ... series of latitudinal bands in open ocean areas, consistent with the oceanic fronts. Around islands and ... continents, the spatial scale of the patterns is finer, and is driven by variations in depth and sea ice. The ...
Meeting Document : WS-MPA-11/06 : Auteur(s): B. Raymond (Australia)
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PROPERTIES OF WATER DYNAMICS AND KRILL DISTRIBUTION IN THE SOUTH SANDWICH ISLANDS SUBAREA
Abstract: of mean krill density in Subarea 48.4 there are premises for formation of the zones ... with meanders and eddy favorable for krill concentration. Here, in the cold water of the Weddell Sea ... , the main part of biomass of Subarea 48.4, are concentrated. In January-February, 2000, almost 60% of ... than 150 g/m2.. Properties of the zones with increased density: these zones are associated with ...
Meeting Document : WG-EMM-09/44 Rev. 1 : Auteur(s): S.M. Kasatkina and V.N. Shnar (Russia)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1992 winter and 1992/93 pup-rearing season
Abstract: Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ... winter an unprecedented number of 97 entangled seals were seen, a ten-fold increase on the previous two ... males, the main element of the population seen ashore at Bird Island at this time of year. In the summer ... usual. Otherwise, the nature of the entangling debris (50% packaging bands, 25% fishing net), the ...
Meeting Document : SC-CAMLR-XII/BG/06 : Auteur(s): Delegation of United Kingdom
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Length composition, sex ratio, and pre-spawning migration of Dissostichus eleginoides in Subarea 48.3 during 1995
in 1994/95 took place in two major fishing grounds, West of Shag Rocks (Wshag) and North-West of ... South Georgia (NWSG). In March there was a high proportion of large females at Wshag (72%) but a nearly ... equal proportion of males and females at NWSG. It is suggested that a strong influx of small fish at ... Wshag in April reduced the mean length in the catch and increased CPUE (numbers of fish per hook ...
Meeting Document : WG-FSA-95/27 Rev. 1 : Auteur(s): Agnew, D.J.
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09
Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... biological data has been collected on toothfish and the associated bycatch. The purpose of this report is to ... fishery which may be indicative of localised stock depletion. We considered here the catch limit, changes ... in depth/location of fishing, and length and age structure of the population. The catch limit was ...
Meeting Document : WG-FSA-09/36 : Auteur(s): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)