Spatial and temporal trends of mercury in freshwater fish in Fennoscandia (1965-2015)
2017
Braaten, Hans Fredrik Veiteberg | Åkerblom, Staffan | de Wit, Heleen | Skotte, Gunnar | Rask, Martti | Vuorenmaa, Jussi | Kahilainen, Kimmo Kalevi | Malinen, Tommi | Rognerud, Sigurd | Lydersen, Espen | Amundsen, Per-Arne | Kashulin, Nicholas | Kashulina, Tatiana | Terentyev, Petr | Christensen, Guttorm | Jackson-Blake, Leah Amber | Lund, Espen | Rosseland, Bjørn Olav
Mercury (Hg) emissions to the atmosphere cause elevated Hg levels in fish, even in many remote regions of the world. Here we present an extensive database of more than 50 000 measurements of Hg in fish, including 2 775 individual water bodies in Fennoscandia (Norway, Sweden, Finland, Russian part of Kola Peninsula) sampled between 1965 and 2015. The data have been analysed for spatial patterns and temporal trends, on raw and weight-adjusted data. The database presents a useful reference for assessment of impacts of environmental policy on Hg in freshwater fish (i.e. Convention on Long-Range Transboundary Air Pollution and The Minamata Convention on Mercury).
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