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    Acoustic estimates of krill density at South Georgia, December/January 1998/99

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    Document Number:
    WG-EMM-99/20
    Author(s):
    A.S. Brierley and C. Goss (United Kingdom)
    Agenda Item(s)
    Abstract

    Dual frequency (38 and 120 kHz) acoustic data from grid surveys in two boxes to the north-west and north-east of South Georgia during December/January 1998/99 were used to estimate mean krill density there. Densities (east = 11.1 g m-2 , west = 12.0 g m-2) were towards the lower end of the range observed over the past two decades, but not abnonnally low, and comprised almost entirely of large (>50 mm) adult krill.

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