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    PROPERTIES OF WATER DYNAMICS AND KRILL DISTRIBUTION IN THE SOUTH SANDWICH ISLANDS SUBAREA

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    Document Number:
    WG-EMM-09/44 Rev. 1
    Author(s):
    S.M. Kasatkina and V.N. Shnar (Russia)
    Agenda Item(s)
    Abstract

    of mean krill density in Subarea 48.4 there are premises for formation of the zones with increased density. These zones are located within the near-shore shelf-based SSMU and associated 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 total biomass was concentrated here, the mean krill density was 65 g/m2, and on local grounds – greater than 150 g/m2.. Properties of the zones with increased density: these zones are associated with meanders and eddies favorable for krill concentration; observed quasistationary character of these eddies and meanders, caused by water dynamics; location of significant biomass that is formed by swarms fields, distributed in a rather narrow depth range, - obviously may promote above said zones, firstly, southern part of near-shore shelf based SSMU as an interesting to krill fishery in some seasons.

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