Stock indentification of S. marinus L. and S. mentella Travin in the Northeast-Atlantic based on measurements of Cs-137 content in the fish: (ICES Paper CM 1992/G:28)

Jákup Reinert, Bogi Hansen, Hans Pauli Joensen

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Abstract

The paper presents results of a pilot study aimed at analyzing the Cs-137 content in redfish from Norwegian, Faroese and Icelandic waters in order to elucidate the stock distribution of S. marinus L. and S. mentella Travin in the Northeast Atlantic. Due to the advection of Cs-137 from the Sellafield reprocessing plant sea water from these three areas varies in Cs-137 activity by more than an order of magnitude and the results of the pilot study indicate that the variations in sea water activity are reflected in the activities in redfish from Iceland and Norway to a large extent. Although the data set is too small to evaluate statistical significance the preliminary analysis also indicates that redfish (especially S. marinus) at the Faroes is more related to the Norwegian than to the Icelandic redfish, which is in contradiction to the traditional view of the redfish stock distribution in the Northeast Atlantic.
Original languageEnglish
PublisherICES
Number of pages8
Publication statusPublished - 1992

Publication series

NameICES Paper CM
No.28
VolumeG

Keywords

  • Radioactivity
  • Cesium
  • Norwegian waters
  • Icelandic waters
  • Faroese waters
  • Northeast Atlantic
  • Fish stock
  • Redfish
  • Seawater

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