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dc.contributor.authorJardine, Timothyen_US
dc.contributor.authorA. Halliday, Ianen_US
dc.contributor.authorHowley, Christinaen_US
dc.contributor.authorSinnamon, Vivianen_US
dc.contributor.authorBunn, Stuarten_US
dc.date.accessioned2017-05-03T11:34:25Z
dc.date.available2017-05-03T11:34:25Z
dc.date.issued2012en_US
dc.date.modified2013-05-30T05:06:19Z
dc.identifier.issn00489697en_US
dc.identifier.doi10.1016/j.scitotenv.2011.11.022en_US
dc.identifier.urihttp://hdl.handle.net/10072/46950
dc.description.abstractLittle is known about the threat of mercury (Hg) to consumers in food webs of Australia's wet-dry tropics. This is despite high concentrations in similar biomes elsewhere and a recent history of gold mining that could lead to a high degree of exposure for biota. We analysed Hg in water, sediments, invertebrates and fishes in rivers and estuaries of north Queensland, Australia to determine its availability and biomagnification in food webs. Concentrations in water and sediments were low relative to other regions of Hg concern, with only four of 138 water samples and five of 60 sediment samples above detection limits of 0.1 姠L- 1 and 0.1 姠g- 1, respectively. Concentrations of Hg in fishes and invertebrates from riverine and wetland food webs were well below international consumption guidelines, including those in piscivorous fishes, likely due to low baseline concentrations and limited rates of biomagnification (average slope of log Hg vs. d15N = 0.08). A large fish species of recreational, commercial, and cultural importance (the barramundi, Lates calcarifer), had low concentrations that were below consumption guidelines. Observed variation in Hg concentrations in this species was primarily explained by age and foraging location (floodplain vs. coastal), with floodplain feeders having higher Hg concentrations than those foraging at sea. These analyses suggest that there is a limited threat of Hg exposure for fish-eating consumers in this region.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent248718 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherElsevieren_US
dc.publisher.placeNetherlandsen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom385en_US
dc.relation.ispartofpageto393en_US
dc.relation.ispartofjournalScience of the Total Environmenten_US
dc.relation.ispartofvolume416en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchEnvironmental Monitoringen_US
dc.subject.fieldofresearchcode050206en_US
dc.titleLarge scale surveys suggest limited mercury availability in tropical north Queensland (Australia)en_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.rights.copyrightCopyright 2012 Elsevier B.V.. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_US
gro.date.issued2012
gro.hasfulltextFull Text


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