Radiocaesium in Faroese lakes after the Chernobyl accident

Hans Pauli Joensen, Trygvi Vestergaard

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

In order to follow the content and ecological decay of radiocaesium in brown trout, samples of trout were taken in July 1987 – July 1990 in three Faroese lakes, each with a non-migratory stock of brown trout. Stoach contents indicated different diets in the three lakes. Trout from Stóravatn, Toftavatn and Leitisvatn, respectively, had a descending order of trophism, which coincided with a decreasing level of 137Cs contamination. Length vs 1237Cs activity distribution shifted from nondescript pattern in 1987 to correlation in 1989 and 1990. Ecological half lives were comparable in lakes Stóravatn and Leitisvatn with half lives around 430 days. Radiocaesium activity decreased rapidly in lake Toftavatn 1987-88, then much slower 1988-90 with half life of 895 days.
Original languageEnglish
Title of host publicationThe sixth Nordic radio-ecological seminar
Subtitle of host publicationTorshavn, Faroe Islands,14-18 June 1992
Place of PublicationTórshavn
Pages1-4
Number of pages4
Publication statusPublished - 1992

Keywords

  • Trout
  • Radiocaesium
  • Radioactivity
  • Half-lives
  • Chernobyl
  • 137Cs

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