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Couples Biogeochemical Cycles of Macronutrients and Trace Metals in Soil: JoAnn M. Holloway


Project Title: Coupled Biogeochemical Cycles of Macronutrients and Trace Metals in Soil
Mendenhall Fellow: JoAnn M. Holloway, (303) 236-2449, jholloway@usgs.gov
Duty Station:Denver, CO
Start Date: October 1, 2003
Education: Ph.D. (Hydrologic Sciences), University of California - Davis, 1999
Research Advisor: Martin Goldhaber, (303) 236-1521, mgold@usgs.gov

Project Description: Soils are the reactive interface between rock and water that control the release of major cations and trace metals through weathering. The extent to which trace metals associated with bedrock are leached into solution is controlled largely by soil chemistry (e.g., sorption and desorption to mineral surfaces, hydrolysis) and soil microbiology (e.g., oxidation to soluble species; reduction, methylation). Thus, it is vital to understand the role of soil biogeochemical cycles in the mobilization and/or sequestration of trace metals. This study has two goals:

This work is being conducted in the California Coast Range at the UC Davis McLaughlin Reserve, in part because of the wealth of background information on soils, geology and plant ecology. The reserve includes historic mines that supplied mercury used during the Mother Lode gold mining period along the Sierra Nevada foothills.

Collaborators:

Davis Creek Reservoir, UC Davis McLaughlin Natural Reserve   Davis Creek Reservoir, UC Davis McLaughlin Natural Reserve

 


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Last modified: 16:08:28 Thu 13 Dec 2012