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dc.contributor.authorDrevnick, Paul E.
dc.contributor.authorShinneman, Avery L. C.
dc.contributor.authorLamborg, Carl H.
dc.contributor.authorEngstrom, Daniel R.
dc.contributor.authorBothner, Michael H.
dc.contributor.authorOris, James T.
dc.date.accessioned2010-09-30T13:50:59Z
dc.date.available2010-11-04T08:21:51Z
dc.date.issued2009-08-12
dc.identifier.urihttp://hdl.handle.net/1912/3923
dc.descriptionAuthor Posting. © The Author(s), 2009. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Water, Air, & Soil Pollution 210 (2010): 399-407, doi:10.1007/s11270-009-0262-y.en_US
dc.description.abstractWe report estimates of mercury (Hg) flux to the sediments of Lake Tahoe, California-Nevada: 2 and 15-20 µg/m2/yr in preindustrial and modern sediments, respectively. These values result in a modern to preindustrial flux ratio of 7.5-10, which is similar to flux ratios recently reported for other alpine lakes in California, and greater than the value of 3 typically seen worldwide. We offer plausible hypotheses to explain the high flux ratios, including (1) proportionally less photoreduction and evasion of Hg with the onset of cultural eutrophication and (2) a combination of enhanced regional oxidation of gaseous elemental Hg and transport of the resulting reactive gaseous Hg to the surface with nightly downslope flows of air. If either of these mechanisms is correct, it could lead to local/regional solutions to lessen the impact of globally increasing anthropogenic emissions of Hg on Lake Tahoe and other alpine ecosystems.en_US
dc.description.sponsorshipFunding was provided by Miami University, EPA-STAR, the Postdoctoral Scholar Program at Woods Hole Oceanographic Institution, and the USGS.en_US
dc.format.mimetypeapplication/pdf
dc.format.mimetypeimage/jpeg
dc.language.isoen_USen_US
dc.relation.urihttp://dx.doi.org/10.1007/s11270-009-0262-y
dc.subjectMercuryen_US
dc.subjectSedimenten_US
dc.subjectLake Tahoeen_US
dc.subjectAlpineen_US
dc.titleMercury flux to sediments of Lake Tahoe, California-Nevadaen_US
dc.typePreprinten_US


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