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| H13: | Quickflow and Quicksilver – Export of Mercury from the Terrestrial Landscape |
| Sponsor: |
Hydrology
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| CoSponsor: |
Biogeosciences |
| Convener: |
James B Shanley US Geological Survey P.O. Box 628 Montpelier, VT, USA 802-828-4466 jshanley@usgs.gov Sarah J Nelson University of Maine Senator George J. Mitchell Center for Environmental and Watershed Research 102 Norman Smith Hall Orono, ME, USA (207) 581-3454 Sarah_Nelson@umit.maine.edu |
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0461 3322 1806 0426 0497 .
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| Description: | The terrestrial landscape is the point of entry for most continental atmospheric mercury deposition, and is the source of the mercury and some of the methylmercury available for biological uptake in downgradient aquatic ecosystems. Recent research has focused on processes that sequester and release mercury in vegetation and soils, in the context of assessing the fate and landscape residence time of historic and current mercury deposition. This session will highlight mercury cycling in the terrestrial sphere, with a special focus on hydrologic and biogeochemical processes leading to stream mercury export. We solicit papers on diverse aspects of terrestrial mercury cycling, including: atmospheric deposition (and emission); interaction with vegetation, soils, and wetlands; methylation processes; movement along hydrologic flow paths; and chronic and episodic mercury and methylmercury export in streamwater. |