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
Mercury in stream ecosystems -- New studies initiated by the U.S. Geological Survey
Application of ultrafiltration and stable isotopic amendments to field studies of mercury partitioning to filterable carbon in lake water and overland runoff
Mercury and methylmercury contents in mine-waste calcine, water, and sediment collected from the Palawan Quicksilver mine, Philippines
Mercury in soil near a long-term air emission source in southeastern Idaho
Sediment-water interactions affecting dissolved-mercury distributions in Camp Far West Reservoir, California
Chemistry of selected high-elevation lakes in seven national parks in the western United States
Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2001
Mercury loading and methylmercury production and cycling in high-altitude lakes from the Western United States
Atmospheric mercury deposition during the last 270 years: A glacial ice core record of natural and anthropogenic sources
Glacial ice cores reveal a record of natural and anthropogenic atmospheric mercury deposition for the last 270 years
Flux of dissolved forms of mercury across the sediment-water interface in Lahontan Reservoir, Nevada
Reactivity and mobility of new and old mercury deposition in a boreal forest ecosystem during the first year of the METAALICUS study
Science and Products
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Mercury in stream ecosystems -- New studies initiated by the U.S. Geological Survey
Mercury can adversely affect humans and wildlife through consumption of contaminated fish, particularly by sensitive individuals, such as children and women of childbearing age. Mercury is currently the leading cause of impairment in the Nation’s estuaries and lakes and was cited in nearly 80 percent of fish-consumption advisories (2,242 of 2,838) reported by states in 2000. The geographic extentAuthorsMark E. Brigham, David P. Krabbenhoft, Pixie A. HamiltonApplication of ultrafiltration and stable isotopic amendments to field studies of mercury partitioning to filterable carbon in lake water and overland runoff
Results from pilot studies on colloidal phase transport of newly deposited mercury in lake water and overland runoff demonstrate that the combination of ultrafiltration, and stable isotope amendment techniques is a viable tool for the study of mercury partitioning to filterable carbon. Ultrafiltration mass balance calculations were generally excellent, averaging 97.3, 96.1 and 99.8% for dissolvedAuthorsChristopher L. Babiarz, J.P. Hurley, D. P. Krabbenhoft, C. Gilmour, B.A. BranfireunMercury and methylmercury contents in mine-waste calcine, water, and sediment collected from the Palawan Quicksilver mine, Philippines
The Palawan Quicksilver mine, Philippines, produced about 2,900 t of mercury during mining of cinnabar ore from 1953 to 1976. More than 2,000,000 t of mine-waste calcines (retorted ore) were produced during mining, much of which were used to construct a jetty in nearby Honda Bay. Since 1995, high Hg contents have been found in several people living near the mine, and 21 of these people were treateAuthorsJ. E. Gray, I.A. Greaves, D.M. Bustos, D. P. KrabbenhoftMercury in soil near a long-term air emission source in southeastern Idaho
At the Idaho National Engineering and Environmental Laboratory in southeastern Idaho, a 500 °C fluidized bed calciner was intermittently operated for 37 years, with measured Hg emission rates of 9–11 g/h. Surface soil was sampled at 57 locations around the facility to determine the spatial distribution of Hg fallout and surface Hg variability, and to predict the total residual Hg mass in the soilAuthorsM.L. Abbott, D. D. Susong, M. Olson, D. P. KrabbenhoftSediment-water interactions affecting dissolved-mercury distributions in Camp Far West Reservoir, California
No abstract available.AuthorsJames S. Kuwabara, Charles N. Alpers, Mark Marvin-DiPasquale, Brent R. Topping, James L. Carter, A. Robin Stewart, Steven V. Fend, Francis Parcheso, Gerald E. Moon, David P. KrabbenhoftChemistry of selected high-elevation lakes in seven national parks in the western United States
A chemical survey of 69 high-altitude lakes in seven national parks in the western United States was conducted during the fallof 1999; the lakes were previously sampled during the fall of 1985, as part of the Western Lake Survey. Lakes in parks in the Sierra/southern Cascades (Lassen Volcanic, Yosemite, Sequoia/Kings Canyon National Parks) and in the southern RockyMountains (Rocky Mountain NationaAuthorsDavid W. Clow, Robert G. Striegl, Leora Nanus, Alisa Mast, Donald H. Campbell, David P. KrabbenhoftYellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2001
The contents of this Annual Report summarize results of monitoring and research from the 2001 field season. The report also contains a summary of nuisance grizzly bear (Ursus arctos horribilis) management actions. In addition to our normal monitoring, we completed an array of studies addressing the potential impacts of winter recreation on denning grizzly bears. This research was in response to aMercury loading and methylmercury production and cycling in high-altitude lakes from the Western United States
Studies worldwide have shown that mercury (Hg) is a ubiquitous contaminant, reaching even the most remote environments such as high-altitude lakes via atmospheric pathways. However, very few studies have been conducted to assess Hg contamination levels of these systems. We sampled 90 mid-latitude, high-altitude lakes from seven national parks in the western United States during a four-week periodAuthorsDavid P. Krabbenhoft, Mark L. Olson, John F. DeWild, David W. Clow, Robert G. Striegl, Mark M. Dornblaser, Peter C. Van MetreAtmospheric mercury deposition during the last 270 years: A glacial ice core record of natural and anthropogenic sources
Mercury (Hg) contamination of aquatic ecosystems and subsequent methylmercury bioaccumulation are significant environmental problems of global extent. At regional to global scales, the primary mechanism of Hg contamination is atmospheric Hg transport. Thus, a better understanding of the long-term history of atmospheric Hg cycling and quantification of the sources is critical for assessing the regiAuthorsPaul F. Schuster, David P. Krabbenhoft, David L. Naftz, L. DeWayne Cecil, Mark L. Olson, John F. DeWild, David D. Susong, Jaromy R. Green, Michael L. AbbottGlacial ice cores reveal a record of natural and anthropogenic atmospheric mercury deposition for the last 270 years
No abstract available.AuthorsDavid P. Krabbenhoft, Paul F. SchusterFlux of dissolved forms of mercury across the sediment-water interface in Lahontan Reservoir, Nevada
No abstract available.AuthorsJames S. Kuwabara, Mark Marvin-DiPasquale, Wayne Praskins, Earl Byron, Brent R. Topping, James L. Carter, Steven V. Fend, Francis Parcheso, David P. Krabbenhoft, Mae S. GustinReactivity and mobility of new and old mercury deposition in a boreal forest ecosystem during the first year of the METAALICUS study
The METAALICUS (Mercury Experiment To Assess Atmospheric Loading In Canada and the US) project is a whole ecosystem experiment designed to study the activity, mobility, and availability of atmospherically deposited mercury. To investigate the dynamics of mercury newly deposited onto a terrestrial ecosystem, an enriched stable isotope of mercury (202Hg) was sprayed onto a Boreal forest subcatchmentAuthorsH. Hintelmann, R. Harris, A. Heyes, J.P. Hurley, C.A. Kelly, D. P. Krabbenhoft, S. Lindberg, J.W.M. Rudd, K.J. Scott, V.L. St. Louis - Web Tools
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