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Effects of predicted climatic changes on distribution of organic contaminants in brackish water mesocosms
Umeå University, Faculty of Science and Technology, Department of Chemistry. (Effects of predicted climatic changes on distribution of organic contaminants in brackish water mesocosms)
Umeå University, Faculty of Science and Technology, Department of Chemistry. (Effects of predicted climatic changes on distribution of organic contaminants in brackish water mesocosms)
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. (Effects of predicted climatic changes on distribution of organic contaminants in brackish water mesocosms)
Umeå University, Faculty of Science and Technology, Umeå Marine Sciences Centre (UMF). (UMFpub)
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2015 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 517, no 1 June 2015, 10-21 p.Article in journal (Refereed) Published
Abstract [en]

Predicted consequences of future climate change in the northern Baltic Sea include increases in sea surface temperatures and terrestrial dissolved organic carbon (DOC) runoff. These changes are expected to alter environmental distribution of anthropogenic organic contaminants (OCs). To assess likely shifts in their distributions, outdoor mesocosms were employed to mimic pelagic ecosystems at two temperatures and two DOC concentrations, current: 15 degrees C and 4 mg DOC L-1 and, within ranges of predicted increases, 18 degrees C and 6 mg DOC L-1, respectively. Selected organic contaminants were added to the mesocosms to monitor changes in their distribution induced by the treatments. OC partitioning to particulate matter and sedimentation were enhanced at the higher DOC concentration, at both temperatures, while higher losses and lower partitioning of OCs to DOC were observed at the higher temperature. No combined effects of higher temperature and DOC on partitioning were observed, possibly because of the balancing nature of these processes. Therefore, changes in OCs' fates may largely depend on whether they are most sensitive to temperature or DOC concentration rises. Bromoanilines, phenanthrene, biphenyl and naphthalene were sensitive to the rise in DOC concentration, whereas organophosphates, chlorobenzenes (PCBz) and polychlorinated biphenyls (POs) were more sensitive to temperature. Mitotane and diflufenican were sensitive to both temperature and DOC concentration rises individually, but not in combination. (C) 2015 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 517, no 1 June 2015, 10-21 p.
Keyword [en]
Climate change, Temperature, Dissolved organic carbon, Organic contaminants, Environmental distribution, Mesocosms
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-103124DOI: 10.1016/j.scitotenv.2015.02.051ISI: 000352663800002PubMedID: 25710621OAI: oai:DiVA.org:umu-103124DiVA: diva2:814084
Available from: 2015-05-26 Created: 2015-05-18 Last updated: 2017-10-24Bibliographically approved

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Ripszám, MátyásGallampois, ChristineBerglund, ÅsaLarsson, HenrikAndersson, AgnetaTysklind, MatsHaglund, Peter
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Department of ChemistryDepartment of Ecology and Environmental SciencesUmeå Marine Sciences Centre (UMF)
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