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dc.contributor.authorBustnes, Jan Ove
dc.contributor.authorBårdsen, Bård-Jørgen
dc.contributor.authorHerzke, Dorte
dc.contributor.authorBangjord, Georg
dc.contributor.authorBollinger, Eric
dc.contributor.authorBourgeon, Sophie
dc.contributor.authorSchulz, Ralf
dc.contributor.authorFritsch, Clémentine
dc.contributor.authorEulaers, Igor
dc.date.accessioned2022-11-08T14:39:34Z
dc.date.available2022-11-08T14:39:34Z
dc.date.issued2022-07-27
dc.description.abstractTo assess how climate-sensitive factors may affect the exposure to organochlorines (OCs) and perfluoroalkyl substances (PFASs), we monitored concentrations in eggs of the common goldeneye (<i>Bucephala clangula</i>) over two decades (1999–2019) in central Norway. The goldeneye alternates between marine and freshwater habitats and is sensitive to climate variation, especially due to alterations in ice conditions which may affect feeding conditions. We assessed how biological factors such as diet (stable isotopes δ<sup>13</sup>C and δ<sup>15</sup>N), the onset of egg laying, and physical characteristics such as winter climate (North Atlantic Oscillation: NAO<sub>w</sub>) influenced exposure. We predicted compounds to show different temporal trends depending on whether they were still in production (<i>i.e.</i> some PFASs) or have been banned (<i>i.e</i>. legacy OCs and some PFASs). Therefore, we controlled for potential temporal trends in all analyses. There were declining trends for α- and γ-hexachlorocyclohexane (HCH), oxychlordane, cis-chlordane, cis-nonachlor, p,p′-dichlorodiphenyltrichloroethane (p.p′-DDT) and less persistent polychlorinated biphenyl (PCB) congeners (e.g. PCB101). In contrast, the dominant compounds, such as p,p′-dichlorodiphenyldichloroethylene (p,p′-DDE) and persistent PCB congeners, were stable, whereas hexachlorobenzene (HCB) increased over time. Most OCs were positively related to δ<sup>15</sup>N, suggesting higher exposure in birds feeding at upper trophic levels. Chlordanes and HCB were positively associated with δ<sup>13</sup>C, indicating traces of marine input for these compounds, whereas the relationships to most PCBs were negative. Among PFASs, perfluorooctanesulfonamide (PFOSA) and perfluorohexane sulfonic acid (PFHxS) declined. Most PFASs were positively associated with δ<sup>13</sup>C, whereas there were no associations with δ<sup>15</sup>N. Egg laying date was positively associated to perfluoroheptanesulfonic acid (PFHpS), perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA), suggesting that some of the PFAS load originated from the wintering locations. Although NAOw had little impact on the exposure to organohalogenated contaminants, factors sensitive to climate change, especially diet, were associated with the exposure to OHCs in goldeneyes.en_US
dc.identifier.citationBustnes JO, Bårdsen BJ, Herzke D, Bangjord G, Bollinger, Bourgeon S, Schulz R, Fritsch C, Eulaers I. The impact of climate sensitive factors on the exposure to organohalogenated contaminants in an aquatic bird exploiting both marine and freshwater habitats. Science of the Total Environment. 2022;850(157667)en_US
dc.identifier.cristinIDFRIDAID 2042896
dc.identifier.doi10.1016/j.scitotenv.2022.157667
dc.identifier.issn0048-9697
dc.identifier.issn1879-1026
dc.identifier.urihttps://hdl.handle.net/10037/27301
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalScience of the Total Environment
dc.relation.projectIDNILU - Norsk institutt for luftforskning: 117068en_US
dc.relation.projectIDNorges forskningsråd: 287114en_US
dc.relation.projectIDNorges forskningsråd: 268482en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleThe impact of climate sensitive factors on the exposure to organohalogenated contaminants in an aquatic bird exploiting both marine and freshwater habitatsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)