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Managing Swedish forestry's impact on mercury in fish: Defining the impact and mitigation measures
Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Box 7050, S-75007 Uppsala, Sweden..
Univ Orebro, Environm Sociol Sect, S-70182 Orebro, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences. Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Box 7050, S-75007 Uppsala, Sweden..
2016 (English)In: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 45, no Suppl. 2, S163-S174 p.Article in journal (Refereed) Published
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Text
Abstract [en]

Inputs of anthropogenic mercury (Hg) to the environment have led to accumulation of Hg in terrestrial and aquatic ecosystems, contributing to fish Hg concentrations well above the European Union standards in large parts of Fennoscandia. Forestry operations have been reported to increase the concentrations and loads of Hg to surface waters by mobilizing Hg from the soil. This summary of available forestry effect studies reveals considerable variation in treatment effects on total Hg (THg) and methylmercury (MeHg) at different sites, varying from no effect up to manifold concentration increases, especially for the bioavailable MeHg fraction. Since Hg biomagnification depends on trophic structures, forestry impacts on nutrient flows will also influence the Hg in fish. From this, we conclude that recommendations for best management practices in Swedish forestry operations are appropriate from the perspective of mercury contamination. However, the complexity of defining effective policies needs to be recognized.

Place, publisher, year, edition, pages
2016. Vol. 45, no Suppl. 2, S163-S174 p.
Keyword [en]
Bioaccumulation, Boreal forest, Forestry effects, Methylation, Methylmercury, Risk governance
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-288624DOI: 10.1007/s13280-015-0752-7ISI: 000372300000009PubMedID: 26744051OAI: oai:DiVA.org:uu-288624DiVA: diva2:927116
Funder
Mistra - The Swedish Foundation for Strategic Environmental Research
Available from: 2016-05-11 Created: 2016-04-28 Last updated: 2017-11-30Bibliographically approved

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