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
Monitoring and evaluating trends in sediment and water indicators
Development of a mercury speciation, fate, and biotic uptake (BIOTRANSPEC) model: Application to Lahontan Reservoir (Nevada, USA)
Whole-ecosystem study shows rapid fish-mercury response to changes in mercury deposition
Local and regional factors affecting atmospheric mercury speciation at a remote location
Evasion of added isotopic mercury from a northern temperate lake
Sources of speciated atmospheric mercury at a residential neighborhood impacted by industrial sources
Preface to the Madison declaration and critical synthesis papers on mercury pollution
An Assessment of the Potential Effects of Aquifer Storage and Recovery on Mercury Cycling in South Florida
Mercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA
Investigation of mercury exchange between forest canopy vegetation and the atmosphere using a new dynamic chamber
Atmospheric mercury speciation in Yellowstone National Park
Analysis of mercury wet-deposition data collected with a newly designed sampler, Boston, Massachusetts metropolitan area, 2002-04
Science and Products
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Filter Total Items: 194
Monitoring and evaluating trends in sediment and water indicators
No abstract available.AuthorsDavid P. Krabbenhoft, D.R. Engstrom, C. Gilmour, R. Harris, J.P. Hurley, R.P. MasonDevelopment of a mercury speciation, fate, and biotic uptake (BIOTRANSPEC) model: Application to Lahontan Reservoir (Nevada, USA)
A mathematically linked mercury transport, speciation, kinetic, and simple biotic uptake (BIOTRANSPEC) model has been developed. An extension of the metal transport and speciation (TRANSPEC) model, BIOTRANSPEC estimates the fate and biotic uptake of inorganic (Hg(II)), elemental (Hg(0)) and organic (MeHg) forms of mercury and their species in the dissolved, colloidal (e.g., dissolved organic matteAuthorsN. Gandhi, S.P. Bhavsar, M.L. Diamond, James S. Kuwabara, Mark C. Marvin-DePasquale, David P. KrabbenhoftWhole-ecosystem study shows rapid fish-mercury response to changes in mercury deposition
Methylmercury contamination of fisheries from centuries of industrial atmospheric emissions negatively impacts humans and wild-life worldwide. The response of fish methylmercury concentrations to changes in mercury deposition has been difficult to establish because sediments/soils contain large pools of historical contamination, and many factors in addition to deposition affect fish mercury. To teAuthorsR.C. Harris, J.W.M. Rudd, M. Amyot, Christopher L. Babiarz, K.G. Beaty, P.J. Blanchfield, R.A. Bodaly, B.A. Branfireun, C.C. Gilmour, J.A. Graydon, A. Heyes, H. Hintelmann, J.P. Hurley, C.A. Kelly, David P. Krabbenhoft, S.E. Lindberg, R.P. Mason, M.J. Paterson, C.L. Podemski, A. Robinson, K.A. Sandilands, G.R. Southworthn, V.L. St. Louis, Michael T. TateLocal and regional factors affecting atmospheric mercury speciation at a remote location
Atmospheric concentrations of elemental (Hg0), reactive gaseous (RGM), and particulate (PHg) mercury were measured at two remote sites in the midwestern United States. Concurrent measurements of Hg0, PHg, and RGM obtained at Devil's Lake and Mt. Horeb, located approximately 65 km apart, showed that Hg0 and PHg concentrations were affected by regional, as well as local sources, while RGM was mainlyAuthorsH. Manolopoulos, J.J. Schauer, M.D. Purcell, T.M. Rudolph, Mark L. Olson, B. Rodger, David P. KrabbenhoftEvasion of added isotopic mercury from a northern temperate lake
Isotopically enriched Hg (90% 202Hg) was added to a small lake in Ontario, Canada, at a rate equivalent to approximately threefold the annual direct atmospheric deposition rate that is typical of the northeastern United States. The Hg spike was thoroughly mixed into the epilimnion in nine separate events at two-week intervals throughout the summer growing season for three consecutive years. We meaAuthorsG. Southworth, S. Lindberg, H. Hintelmann, M. Amyot, A. Poulain, M. Bogle, M. Peterson, J. Rudd, R. Harris, K. Sandilands, David P. Krabbenhoft, Mark L. OlsenSources of speciated atmospheric mercury at a residential neighborhood impacted by industrial sources
Speciated measurements of atmospheric mercury plumes were obtained at an industrially impacted residential area of East St. Louis, IL. These plumes were found to result in extremely high mercury concentrations at ground level that were composed of a wide distribution of mercury species. Ground level concentrations as high as 235 ng m-3 for elemental mercury (Hg 0) and 38 300 pg m-3 for reactive meAuthorsH. Manolopoulos, D.C. Snyder, James J Schauer, J.S. Hill, J.R. Turner, Mark L. Olson, David P. KrabbenhoftPreface to the Madison declaration and critical synthesis papers on mercury pollution
No abstract available.AuthorsJames P. Hurley, David P. Krabbenhoft, James G. Wiener, Christopher L. BabiarzAn Assessment of the Potential Effects of Aquifer Storage and Recovery on Mercury Cycling in South Florida
Mercury contamination in the environment is a global concern, especially in areas with abundant wetlands, such as south Florida. As the causal factors of this concern improve, scientists find that many factors that do not necessarily affect mercury concentrations, such as flooding and drying cycles, or changes to carbon and sulfate loading, can profoundly affect net mercury toxicity. Especially imAuthorsDavid P. Krabbenhoft, George R. Aiken, Mary P. AndersonMercury in water and biomass of microbial communities in hot springs of Yellowstone National Park, USA
Ultra-clean sampling methods and approaches typically used in pristine environments were applied to quantify concentrations of Hg species in water and microbial biomass from hot springs of Yellowstone National Park, features that are geologically enriched with Hg. Microbial populations of chemically-diverse hot springs were also characterized using modern methods in molecular biology as the initiaAuthorsS.A. King, S. Behnke, K. Slack, D. P. Krabbenhoft, D. Kirk Nordstrom, M.D. Burr, Robert G. StrieglInvestigation of mercury exchange between forest canopy vegetation and the atmosphere using a new dynamic chamber
This paper presents the design of a dynamic chamber system that allows full transmission of PAR and UV radiation and permits enclosed intact foliage to maintain normal physiological function while Hg(0) flux rates are quantified in the field. Black spruce and jack pine foliage both emitted and absorbed Hg(0), exhibiting compensation points near atmospheric Hg(0) concentrations of ∼2−3 ng m-3. UsinAuthorsJ.A. Graydon, V.L. St. Louis, S.E. Lindberg, H. Hintelmann, D. P. KrabbenhoftAtmospheric mercury speciation in Yellowstone National Park
Atmospheric concentrations of elemental mercury (Hg0), reactive gaseous Hg (RGM), and particulate Hg (pHg) concentrations were measured in Yellowstone National Park (YNP), U.S.A. using high resolution, real time atmospheric mercury analyzers (Tekran 2537A, 1130, and 1135). A survey of Hg0 concentrations at various locations within YNP showed that concentrations generally reflect global backgroundAuthorsB.D. Hall, M.L. Olson, A.P. Rutter, R.R. Frontiera, D. P. Krabbenhoft, D.S. Gross, M. Yuen, T.M. Rudolph, J.J. SchauerAnalysis of mercury wet-deposition data collected with a newly designed sampler, Boston, Massachusetts metropolitan area, 2002-04
No abstract available.AuthorsAnn Chalmers, Mark A. Nilles, David P. Krabbenhoft, Eric Prestbo - Web Tools
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