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dc.contributor.authorRuus, Anders
dc.contributor.authorØverjordet, Ida Beathe
dc.contributor.authorBraaten, Hans Fredrik Veiteberg
dc.contributor.authorEvenset, Anita
dc.contributor.authorChristensen, Guttorm N.
dc.contributor.authorHeimstad, Eldbjørg Sofie
dc.contributor.authorGabrielsen, Geir W.
dc.contributor.authorBorgå, Katrine
dc.date.accessioned2018-10-12T13:02:12Z
dc.date.available2018-10-12T13:02:12Z
dc.date.issued2015-08-14
dc.description.abstractMercury (Hg) is a toxic element that enters the biosphere from natural and anthropogenic sources, and emitted gaseous Hg enters the Arctic from lower latitudes by long-range transport. In aquatic systems, anoxic conditions favor the bacterial transformation of inorganic Hg to methylmercury (MeHg), which has a greater potential for bioaccumulation than inorganic Hg and is the most toxic form of Hg. The main objective of the present study was to quantify the biomagnification of MeHg in a marine pelagic food web, comprising species of zooplankton, fish, and seabirds, from the Kongsfjorden system (Svalbard, Norway), by use of trophic magnification factors. As expected, tissue concentrations of MeHg increased with increasing trophic level in the food web, though at greater rates than observed in several earlier studies, especially at lower latitudes. There was strong correlation between MeHg and total Hg concentrations through the food web as a whole. The concentration of MeHg in kittiwake decreased from May to October, contributing to seasonal differences in trophic magnification factors. The ecology and physiology of the species comprising the food web in question may have a large influence on the magnitude of the biomagnification. A significant linear relationship was also observed between concentrations of selenium and total Hg in birds but not in zooplankton, suggesting the importance of selenium in Hg detoxification for individuals with high Hg concentrations. <i>Environ Toxicol Chem</i> 2015;34:2636–2643. © 2015 SETACen_US
dc.description.sponsorshipFram Centreen_US
dc.descriptionThis is the peer reviewed version of the following article: Ruus, A,, Øverjordet, I.B., Braaten, H.F.V., Evenset, A., Christensen, G.N., Heimstad, E.S., ... Borgå, K. (2015). Methylmercury biomagnification in an Arctic pelagic food web. <i>Environmental Toxicology and Chemistry</i>, 34(11), 2636-2643. https://doi.org/10.1002/etc.3143, which has been published in final form at <a href=https://doi.org/10.1002/etc.3143> https://doi.org/10.1002/etc.3143</a>. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.en_US
dc.identifier.citationRuus, A,, Øverjordet, I.B., Braaten, H.F.V., Evenset, A., Christensen, G.N., Heimstad, E.S., ... Borgå, K. (2015). Methylmercury biomagnification in an Arctic pelagic food web. Environmental Toxicology and Chemistry, 34(11), 2636-2643. https://doi.org/10.1002/etc.3143en_US
dc.identifier.cristinIDFRIDAID 1303989
dc.identifier.doi10.1002/etc.3143
dc.identifier.issn0730-7268
dc.identifier.issn1552-8618
dc.identifier.urihttps://hdl.handle.net/10037/13958
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalEnvironmental Toxicology and Chemistry
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/MARINFORSK/234388/Norway/Effects of changes in discharges, climate and other factors on coastal contaminants and their biological consequences/COCO/en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/IPY/176073/Norway/Contaminants in Polar Regions -Dynamic range of contaminants in polar marine ecosystems//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Chemistry: 440en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Kjemi: 440en_US
dc.subjectMethylmercuryen_US
dc.subjectTrophic magnificationen_US
dc.subjectBioaccumulationen_US
dc.subjectFood weben_US
dc.subjectArcticen_US
dc.titleMethylmercury biomagnification in an Arctic pelagic food weben_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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