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CONVERSION FACTORS AND GREEN WEIGHT CALCULATION IN THE ANTARCTIC KRILL FISHERY

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Document Number:
TASO-09/06
Author(s):
Moir Clark, J., Peatman, T.
Abstract
  • Information was taken from CCAMLR observer reports and interviews with fishing masters;
  • The variation in reported conversion factors for similar reported products can be attributed to a number of reasons:.;
    o Differences in the method of processing the same products
    o Seasonal variation o Spatial variation
    o Krill water content
    o Reporting errors (recording percentage recovered instead of conversion factor)
  • Uncertainty in reported Conversion Factors does not necessarily lead to uncertainty in total catch estimates as the majority of vessels interviewed made direct estimates of green weight catches; and,
  • A need for closer monitoring of processing methods, calculation of green weight catches, and conversion factors where appropriate, this could be enhanced by greater observer coverage.