Åkerblom, Staffan
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Research article2012Peer reviewed
Temporal change estimation of mercury concentrations in northern pike (Esox lucius L.) in Swedish lakes
Åkerblom, Staffan; Nilsson, Mats; Yu, Jun; Johansson, Kjell; Ranneby, Bo
Abstract
Adequate temporal trend analysis of mercury (Hg) in freshwater ecosystems is critical to evaluate if actions from the human society have affected Hg concentrations ([Hg]) in fresh water biota. This study examined temporal change in [Hg] in Northern pike (Esox lucius L.) in Swedish freshwater lakes between 1994 and 2006. To achieve this were lake-specific, multiple-linear-regression models used to estimate pike [Hg], including indicator variables representing time and fish weight and their interactions. This approach permitted estimation of the direction and magnitude of temporal changes in 25 lakes selected from the Swedish national database on Hg in freshwater biota. A significant increase was found in 36% of the studied lakes with an average increase in pike [Hg] of 3.7 ± 6.7% per year that was found to be positively correlated with total organic carbon. For lakes with a significant temporal change the dataset was based on a mean of 30 fish, while for lakes with no temporal change it was based on a mean of 13 fish
Published in
Chemosphere
2012, volume: 86, number: 5, pages: 439-445
SLU Authors
Nilsson, Mats
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
Yu, Jun
- Department of Forest Economics, Swedish University of Agricultural Sciences
- Department of Forest Economics, Swedish University of Agricultural Sciences
Johansson, Kjell
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences
Ranneby, Bo
- Department of Forest Economics, Swedish University of Agricultural Sciences
- Department of Forest Economics, Swedish University of Agricultural Sciences
Global goals (SDG)
SDG3 Good health and well-being
SDG6 Clean water and sanitation
UKÄ Subject classification
Fish and Aquacultural Science
Probability Theory and Statistics
Environmental Sciences related to Agriculture and Land-use
Publication identifier
- DOI: https://doi.org/10.1016/j.chemosphere.2011.09.037
Permanent link to this page (URI)
https://res.slu.se/id/publ/42668