Fluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment cores

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dc.contributor.authorLockhart, W.L.
dc.contributor.authorWilkinson, P.
dc.contributor.authorBilleck, B.N
dc.contributor.authorDanell, R.A.
dc.contributor.authorHunt, R.V.
dc.contributor.authorBrunskill, G.J.
dc.contributor.authorDelaronde, J.
dc.contributor.authorSt.Louis, V.
dc.date.accessioned2019-06-05T16:12:09Z
dc.date.available2019-06-05T16:12:09Z
dc.date.issued1998
dc.date.submitted2019-06-05T16:12:09Zen
dc.description.abstractSediment cores were collected from lakes in central and northern Canada and from Hudson Bay to compare current and historic net depositions of mercury. Cores from most locations were enriched in mercury in the upper layers deposited recently relative to deeper, historic layers. The lakes with the greatest enrichments in mercury were located in central/southern Canada. This enrichment was interpreted as being of anthropogenic origin. Mercury inputs at the Experimental Lakes Area (ELA) in northwestern Ontario inferred from a core profile agreed well with inputs calculated independently from precipitation and runoff data. Anthropogenic inputs of mercury to northwestern Ontario were calculated to be about 9 ug m-2 y-1. Considering all the locations over the geographic range, the core profiles infer that fluxes of mercury have increased on average by about 2 fold over the past half century. This is consistent with results from other sites in North America and Europe.en_US
dc.identifier.doihttps://doi.org/10.1023/A:1005923123637
dc.identifier.issn1573-515X
dc.identifier.urihttp://hdl.handle.net/1993/33952
dc.language.isoengen_US
dc.publisherKluwer Academic Publishersen_US
dc.rightsopen accessen_US
dc.subjectArcticen_US
dc.subjectChronologyen_US
dc.subjectCoreen_US
dc.subjectDepositionen_US
dc.subjectMercuryen_US
dc.subjectSedimenten_US
dc.subjectFluxesen_US
dc.subjectCanadaen_US
dc.subjectLakeen_US
dc.titleFluxes of mercury to lake sediments in central and northern Canada inferred from dated sediment coresen_US
dc.typeTechnical Reporten_US
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