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Methylmercury production in and export from agricultural wetlands in California, USA: the need to account for physical transport processes into and out of the root zone

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Bachand, P.A.M., S.M. Bachand, J.A. Fleck, C.N. Alpers, M. Stephenson and L. Windham-Myers. (2014) Methylmercury production in and export from agricultural wetlands in California, USA: The need to account for physical transport processes into and out of the root zone. Science of the Total Environment.

Summary

Concentration and mass balance analyses were used to quantify methylmercury (MeHg) loads from conventional (white) rice, wild rice, and fallowed fields in northern California's Yolo Bypass. These analyses were standardized against chloride to distinguish transport pathways and net ecosystem production (NEP). During summer, chloride loads were both exported with surface water and moved into the root zone at a 2:1 ratio. MeHg and dissolved organic carbon (DOC) behaved similarly with surface water and root zone exports at ~ 3:1 ratio. These trends reversed in winter with DOC, MeHg, and chloride moving from the root zone to surface waters at rates opposite and exceeding summertime root zone fluxes. These trends suggest that summer transpiration [...]

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Harvested on Thu Feb 12 15:40:59 MST 2015 from MODS XML Service

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Type Scheme Key
local-index unknown 70138505
local-pk unknown 70138505
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1016/j.scitotenv.2013.11.086
series unknown Science of the Total Environment

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citationTypeArticle
journalScience of the Total Environment
languageEnglish
parts
typevolume
value472

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