David P Krabbenhoft
David Krabbenhoft is a Scientist Emeritus with the Upper Midwest Water Science Center.
David Krabbenhoft received his Ph.D. from the University of Wisconsin-Madison in 1988 and has been a research scientist with the U.S. Geological Survey since. He has general research interests are in biogeochemistry and hydrogeology of aquatic ecosystems. Dave began working on environmental mercury cycling, transformations, and fluxes in aquatic ecosystems with the Mercury in Temperate Lakes project in 1988; since then, the topic has consumed his professional life. In 1994, Dave established the USGS’s Mercury Research Laboratory, which includes a team of multi-disciplinary mercury investigators and a state-of-the-art analytical facility strictly dedicated to low-level speciation analysis of mercury. In 1995 he initiated the multi-agency Aquatic Cycling of Mercury in the Everglades (ACME) project, which is still ongoing. More recently, Dave has been a Primary Investigator on the internationally conducted Mercury Experiment To Assess Atmospheric Loadings in Canada and the US (METAALICUS) project, which is a novel effort to examine the ecosystem-level response to loading an entire watershed with mercury. Currently, Dave’s research team is active on projects that span environments as far ranging as the Pacific Ocean to freshwater systems in Alaska to Florida, and from California to New England. In recent years, the Mercury Research Team entered into the realm of atmospheric research by constructing and deployed the USGS Mobile Atmospheric Mercury Lab, which has the capability for rapid deployment and advanced study of mercury in the atmosphere. Since 1990, he has authored or coauthored over 100 papers on mercury in the environment. In August 2006, Dave served as the Co-Chair for the 8th International Conference on Mercury as a Global Pollutant.
Professional Experience
Research Hydrologist/Geochemist, U.S. Geological Survey, Wisconsin Water Science Center, 8505 Research Way, Middleton, Wisconsin, July 1988 to present.
Adjunct, University of Wisconsin-Madison, 2001 to present.
USGS Mercury Research Lab, Team Leader, 1994 to present.
Education and Certifications
Ph.D. 1988, University of Wisconsin-Madsion, Department of Geology and Geophysics; research emphasis isotope geochemistry, limnology, and hydrogeology
M.S. 1984, University of Wisconsin-Madsion, Department of Geology and Geophysics; research emphasis geochemistry and hydrogeology
B.S. 1982, North Dakota St. University, Major: Geology, Minor: Chemistry
Honors and Awards
Shoemaker Lifetime Achievement Award for Excellence in Science Communications (October 2013)
USGS performance awards (received on 24 occasions from 1988-2013)
Department of the Interior, U.S. Geological Survey, In Recognition for Meritorious Service (2003)
Department of the Interior, U.S. Geological Survey, In Recognition for Superior Service (1997)
Exxon Research Scholarship, University of Wisconsin-Madison (1982)
Summa Cum Laude, North Dakota State University (19
Science and Products
Assessing the potential for re-emission of mercury deposited in precipitation from arid soils using a stable isotope
Mercury transport in a high-elevation watershed in Rocky Mountain National Park, Colorado
Speciation and transport of newly deposited mercury in a boreal forest wetland: A stable mercury isotope approach
Pacific volcanoes, mercury contaminated fish, and polynesian taboos
Mercury concentrations in water from an unconfined aquifer system, New Jersey coastal plain
Sediment remobilization of Mercury in South San Francisco Bay, California
Methylmercury contamination of aquatic ecosystems: A widespread problem with many challenges for the chemical sciences
Atmospheric deposition of nutrients, pesticides, and mercury in Rocky Mountain National Park, Colorado, 2002
Mercury accumulation in snow on the Idaho National Engineering and Environmental Laboratory and surrounding region, southeast Idaho, USA
Changes in the chemistry of lakes and precipitation in high-elevation national parks in the western United States, 1985–1999
Variability of isotope and major ion chemistry in the Allequash Basin, Wisconsin
Ecotoxicology of mercury
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Assessing the potential for re-emission of mercury deposited in precipitation from arid soils using a stable isotope
A solution containing 198Hg in the form of HgCl2 was added to a 4 m2 area of desert soils in Nevada, and soil Hg fluxes were measured using three dynamic flux chambers. There was an immediate release of 198Hg after it was applied, and then emissions decreased exponentially. Within the first 6 h after the isotope was added to the soil, ∼12 ng m-2 of 198Hg was emitted to the atmosphere, followed byAuthorsJ.A. Ericksen, M.S. Gustin, S.E. Lindberg, S.D. Olund, D. P. KrabbenhoftMercury transport in a high-elevation watershed in Rocky Mountain National Park, Colorado
Mercury (Hg) was measured in stream water and precipitation in the Loch Vale watershed in Rocky Mountain National Park, Colorado, during 2001–2002 to investigate processes controlling Hg transport in high-elevation ecosystems. Total Hg concentrations in precipitation ranged from 2.6 to 36.2 ng/L and showed a strong seasonal pattern with concentrations that were 3 to 4 times higher during summer moAuthorsM.A. Mast, K. Campbell, D. P. Krabbenhoft, Howard E. TaylorSpeciation and transport of newly deposited mercury in a boreal forest wetland: A stable mercury isotope approach
As part of the Mercury Experiment to Assess Atmospheric Loadings in Canada and the United States (METAALICUS) the fate and transport of contemporary mercury (Hg) deposition in a boreal wetland was investigated using an experimentally applied stable mercury isotope. We applied high purity (99.2% ± 0.1) 202Hg(II) to a wetland plot to determine if (1) the 202Hg was detectable above the pool of nativeAuthorsB.A. Branfireun, D. P. Krabbenhoft, H. Hintelmann, R. J. Hunt, J.P. Hurley, J.W.M. RuddPacific volcanoes, mercury contaminated fish, and polynesian taboos
No abstract available.AuthorsJohn Dellinger, Jean Hudson, David Krabbenhoft, M.E. Hinano MurphyMercury concentrations in water from an unconfined aquifer system, New Jersey coastal plain
Concentrations of total mercury (Hg) from 2 μg/L (the USEPA maximum contaminant level) to 72 μg/L in water from about 600 domestic wells in residential parts of eight counties in southern New Jersey have been reported by State and county agencies. The wells draw water from the areally extensive (7770 km2) unconfined Kirkwood–Cohansey aquifer system, in which background concentrations of Hg are aboAuthorsJ. L. Barringer, Zoltan Szabo, L. J. Kauffman, T. H. Barringer, P. E. Stackelberg, T. Ivahnenko, S. Rajagopalan, D. P. KrabbenhoftSediment remobilization of Mercury in South San Francisco Bay, California
No abstract available.AuthorsBrent R. Topping, James S. Kuwabara, Mark C. Marvin-DisPasquale, Jennifer L. Agee, Le H. Kieu, John R. Flanders, Francis Parcheso, Stephen W. Hager, Cary B. Lopez, David P. KrabbenhoftMethylmercury contamination of aquatic ecosystems: A widespread problem with many challenges for the chemical sciences
No abstract available.AuthorsDavid P. KrabbenhoftAtmospheric deposition of nutrients, pesticides, and mercury in Rocky Mountain National Park, Colorado, 2002
Nutrients, current-use pesticides, and mercury were measured in atmospheric deposition during summer in Rocky Mountain National Park in Colorado to improve understanding of the type and magnitude of atmospheric contaminants being deposited in the park. Two deposition sites were established on the east side of the park: one at an elevation of 2,902 meters near Bear Lake for nutrients and pesticidesAuthorsAlisa Mast, Donald H. Campbell, George P. Ingersoll, William T. Foreman, David P. KrabbenhoftMercury accumulation in snow on the Idaho National Engineering and Environmental Laboratory and surrounding region, southeast Idaho, USA
Snow was sampled and analyzed for total mercury (THg) on the Idaho National Engineering and Environmental Laboratory (INEEL) and surrounding region prior to the start-up of a large (9-11 g/h) gaseous mercury emission source. The objective was to determine the effects of the source on local and regional atmospheric deposition of mercury. Snow samples collected from 48 points on a polar grid near thAuthorsD. D. Susong, M.L. Abbott, D. P. KrabbenhoftChanges in the chemistry of lakes and precipitation in high-elevation national parks in the western United States, 1985–1999
High-elevation lakes in the western United States are sensitive to atmospheric deposition of sulfur and nitrogen due to fast hydrologic flushing rates, short growing seasons, an abundance of exposed bedrock, and a lack of well-developed soils. This sensitivity is reflected in the dilute chemistry of the lakes, which was documented in the U.S. Environmental Protection Agency's Western Lake Survey oAuthorsDavid W. Clow, James O. Sickman, Robert G. Striegl, David P. Krabbenhoft, John G. Elliott, Mark M. Dornblaser, David A. Roth, Donald H. CampbellVariability of isotope and major ion chemistry in the Allequash Basin, Wisconsin
As part of ongoing research conducted at one of the U.S. Geological Survey's Water, Energy, and Biogeochem-ical Budgets sites, work was undertaken to describe the spatial and temporal variability of stream and ground water isotopic composition and cation chemistry in the Trout Lake watershed, to relate the variability to the watershed flow system, and to identify the linkages of geochemical evolutAuthorsJohn F. Walker, Randall J. Hunt, Thomas D. Bullen, David P. Krabbenhoft, Carol KendallEcotoxicology of mercury
No abstract available.AuthorsJames G. Wiener, David P. Krabbenhoft, Gary H. Heinz, Anton M. Scheuhammer - Web Tools
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