JoAnn M. Holloway
JoAnn Holloway is a Research Physical Scientist (biogeochemistry) with the Geology, Geophysics, and Geochemistry Science Center.
JoAnn M. Holloway is a biogeochemist with research interests exploring the influence of parent material, geomorphology and hydrologic processes on soil biogeochemistry. These processes are evaluated in the context of how land use, including mining, urbanization, forestry, and agricultural practices can influence soil and water quality. Her background in hydrology, geology, geochemistry, pedology, and soil microbiology provides the basis for interdisciplinary collaborations to evaluate the impact of land use on soil and water quality. Her recent work has focused on how wildfire overprinting historically mined watersheds affect the remobilization of mercury and other trace metals and the implications for ongoing mining remediation operations. She has also worked with hydrothermal processes influencing the speciation of nitrogen and mercury in Yellowstone thermal waters.
Professional Experience
Research Physical Scientist, 2011 - present
U.S. Geological Survey, Geology, Geophysics, and Geochemistry Science Center; Denver, COResearch Geologist, 2005 - 2011
U.S. Geological Survey, Crustal Imaging and Characterization Science Center; Denver, COResearch Geologist (Mendenhall Postdoctoral Fellow), 2003-2005
U.S. Geological Survey, Crustal Imaging and Characterization Team; Denver, COLecturer, Spring Semester 2003
"Environmental Microbiology", Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, COResearch Hydrologist (National Research Council Postdoctoral Fellow) 1999-2001
U.S. Geological Survey, National Research Program; Boulder, CO
Education and Certifications
Ph.D. Hydrologic Sciences, University of California at Davis, 1999
Dissertation: Influence of Bedrock Weathering on Nitrogen Cycling in a Sierra Nevada Watershed
Advisor: Randy DahlgrenM.S. Geology, Western Washington University, 1993
Thesis: Geochemical Interactions in a Subalpine Watershed, Mount Baker National Recreation Area, WashingtonB.S. Geology, University of Utah, 1990
Senior Thesis: Mineralization and Geochemistry of the Escalante Silver Mine, Iron County, Utah
Science and Products
Filter Total Items: 34
Major- and trace-element concentrations in soils from northern California: Results from the Geochemical Landscapes Project pilot study
In 2004, the U.S. Geological Survey (USGS), the Geological Survey of Canada (GSC), and the Mexican Geological Survey (Servicio Geologico Mexicano, or SGM) initiated pilot studies in preparation for a soil geochemical survey of North America called the Geochemical Landscapes Project. The purpose of this project is to provide a better understanding of the variability in chemical...
Authors
Jean Morrison, Martin B. Goldhaber, JoAnn M. Holloway, David R. Smith
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 2003-2005
Water analyses are reported for 157 samples collected from numerous hot springs, their overflow drainages, and Lemonade Creek in Yellowstone National Park (YNP) during 2003–2005. Water samples were collected and analyzed for major and trace constituents from ten areas of YNP including Terrace and Beryl Springs in the Gibbon Canyon area, Norris Geyser Basin, the West Nymph Creek thermal...
Authors
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park Wyoming, 2001-2002
Water analyses are reported for one-hundred-twenty-one samples collected from hot springs and their overflow drainages, the Gibbon River, and one ambient-temperature acid stream in Yellowstone National Park (YNP) during 2001-2002. Twenty-five analyses are reported for samples collected during May 2001, fifty analyses are reported for samples collected during September 2001, eleven...
Authors
R. Blaine McCleskey, James W. Ball, D. Kirk Nordstrom, JoAnn M. Holloway, Howard E. Taylor
Questa baseline and pre-mining ground-water quality investigation. 10. Geologic influences on ground and surface waters in the lower Red River watershed, New Mexico
This report is one in a series that presents results of an interdisciplinary U.S. Geological Survey (USGS) study of ground-water quality in the lower Red River watershed prior to open-pit and underground molybdenite mining at Molycorp’s Questa mine. The stretch of the Red River watershed that extends from just upstream of the town of Red River, N. Mex., to just above the town of Questa...
Authors
Steve D. Ludington, Geoff Plumlee, Jonathan Caine, Dana J. Bove, JoAnn M. Holloway, Keith E. Livo
Nitrogen and carbon flow from rock to water: Regulation through soil biogeochemical processes, Mokelumne River watershed, California, and Grand Valley, Colorado
Soil denitrification is an ecologically important nitrogen removal mechanism that releases to the atmosphere the greenhouse gas N2O, an intermediate product from the reduction of NO3- to N 2. In this study we evaluate the relationship between soil carbon and denitrification potential in watersheds with bedrock acting as a nonpoint source of nitrogen, testing the hypothesis that nitrate...
Authors
JoAnn M. Holloway, R. S. U. Smith
Nitrogen transformations in hot spring runoff, Yellowstone National Park, WY
No abstract available.
Authors
JoAnn M. Holloway, D. Kirk Nordstrom, R. S. U. Smith
Nitrogen in rock: Occurrences and biogeochemical implications
There is a growing interest in the role of bedrock in global nitrogen cycling and potential for increased ecosystem sensitivity to human impacts in terrains with elevated background nitrogen concentrations. Nitrogen-bearing rocks are globally distributed and comprise a potentially large pool of nitrogen in nutrient cycling that is frequently neglected because of a lack of routine...
Authors
JoAnn M. Holloway, R.A. Dahlgren
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 1999-2000
Sixty-seven water analyses are reported for samples collected from 44 hot springs and their overflow drainages and two ambient-temperature acid streams in Yellowstone National Park (YNP) during 1990-2000. Thirty-seven analyses are reported for 1999, 18 for June of 2000, and 12 for September of 2000. These water samples were collected and analyzed as part of research investigations in YNP...
Authors
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway, Philip L. Verplanck, Sabin A. Sturtevant
Seasonal and event-scale variations in solute chemistry for four Sierra Nevada catchments
Hydrobiogeochemical processes controlling stream water chemistry were examined in four small (
Authors
JoAnn M. Holloway, R.A. Dahlgren
Nitrogen release from rock and soil under simulated field conditions
A laboratory study was performed to simulate field weathering and nitrogen release from bedrock in a setting where geologic nitrogen has been suspected to be a large local source of nitrate. Two rock types containing nitrogen, slate (1370 mg N kg-1) and greenstone (480 mg N kg-1), were used along with saprolite and BC horizon sand from soils derived from these rock types. The fresh rock...
Authors
JoAnn M. Holloway, R.A. Dahlgren, W.H. Casey
Non-USGS Publications**
Holloway, J. M., Dahlgren, R. A., Hansen, B. & Casey, W. H., 1998, Contribution of bedrock nitrogen to high nitrate concentrations in stream water: Nature 395, 785-788, https://doi.org/10.1038/27410.
Holloway, J. M. & Dahlgren, R. A., 1999, Geologic nitrogen in biogeochemical cycling: Geology 27, 567-570, https://doi.org/10.1130/0091-7613(1999)027%3C0567:GNITBC%3E2.3.CO;2.
Holloway, J.M. & Petersen, E.U., 1991 Mineralization and geochemistry of the Escalante silver mine, Iron County, Utah: (ed., Allison, M. Lee et al.) Utah Geological Association Publication 18, p 83-95.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 34
Major- and trace-element concentrations in soils from northern California: Results from the Geochemical Landscapes Project pilot study
In 2004, the U.S. Geological Survey (USGS), the Geological Survey of Canada (GSC), and the Mexican Geological Survey (Servicio Geologico Mexicano, or SGM) initiated pilot studies in preparation for a soil geochemical survey of North America called the Geochemical Landscapes Project. The purpose of this project is to provide a better understanding of the variability in chemical...
Authors
Jean Morrison, Martin B. Goldhaber, JoAnn M. Holloway, David R. Smith
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 2003-2005
Water analyses are reported for 157 samples collected from numerous hot springs, their overflow drainages, and Lemonade Creek in Yellowstone National Park (YNP) during 2003–2005. Water samples were collected and analyzed for major and trace constituents from ten areas of YNP including Terrace and Beryl Springs in the Gibbon Canyon area, Norris Geyser Basin, the West Nymph Creek thermal...
Authors
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park Wyoming, 2001-2002
Water analyses are reported for one-hundred-twenty-one samples collected from hot springs and their overflow drainages, the Gibbon River, and one ambient-temperature acid stream in Yellowstone National Park (YNP) during 2001-2002. Twenty-five analyses are reported for samples collected during May 2001, fifty analyses are reported for samples collected during September 2001, eleven...
Authors
R. Blaine McCleskey, James W. Ball, D. Kirk Nordstrom, JoAnn M. Holloway, Howard E. Taylor
Questa baseline and pre-mining ground-water quality investigation. 10. Geologic influences on ground and surface waters in the lower Red River watershed, New Mexico
This report is one in a series that presents results of an interdisciplinary U.S. Geological Survey (USGS) study of ground-water quality in the lower Red River watershed prior to open-pit and underground molybdenite mining at Molycorp’s Questa mine. The stretch of the Red River watershed that extends from just upstream of the town of Red River, N. Mex., to just above the town of Questa...
Authors
Steve D. Ludington, Geoff Plumlee, Jonathan Caine, Dana J. Bove, JoAnn M. Holloway, Keith E. Livo
Nitrogen and carbon flow from rock to water: Regulation through soil biogeochemical processes, Mokelumne River watershed, California, and Grand Valley, Colorado
Soil denitrification is an ecologically important nitrogen removal mechanism that releases to the atmosphere the greenhouse gas N2O, an intermediate product from the reduction of NO3- to N 2. In this study we evaluate the relationship between soil carbon and denitrification potential in watersheds with bedrock acting as a nonpoint source of nitrogen, testing the hypothesis that nitrate...
Authors
JoAnn M. Holloway, R. S. U. Smith
Nitrogen transformations in hot spring runoff, Yellowstone National Park, WY
No abstract available.
Authors
JoAnn M. Holloway, D. Kirk Nordstrom, R. S. U. Smith
Nitrogen in rock: Occurrences and biogeochemical implications
There is a growing interest in the role of bedrock in global nitrogen cycling and potential for increased ecosystem sensitivity to human impacts in terrains with elevated background nitrogen concentrations. Nitrogen-bearing rocks are globally distributed and comprise a potentially large pool of nitrogen in nutrient cycling that is frequently neglected because of a lack of routine...
Authors
JoAnn M. Holloway, R.A. Dahlgren
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 1999-2000
Sixty-seven water analyses are reported for samples collected from 44 hot springs and their overflow drainages and two ambient-temperature acid streams in Yellowstone National Park (YNP) during 1990-2000. Thirty-seven analyses are reported for 1999, 18 for June of 2000, and 12 for September of 2000. These water samples were collected and analyzed as part of research investigations in YNP...
Authors
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway, Philip L. Verplanck, Sabin A. Sturtevant
Seasonal and event-scale variations in solute chemistry for four Sierra Nevada catchments
Hydrobiogeochemical processes controlling stream water chemistry were examined in four small (
Authors
JoAnn M. Holloway, R.A. Dahlgren
Nitrogen release from rock and soil under simulated field conditions
A laboratory study was performed to simulate field weathering and nitrogen release from bedrock in a setting where geologic nitrogen has been suspected to be a large local source of nitrate. Two rock types containing nitrogen, slate (1370 mg N kg-1) and greenstone (480 mg N kg-1), were used along with saprolite and BC horizon sand from soils derived from these rock types. The fresh rock...
Authors
JoAnn M. Holloway, R.A. Dahlgren, W.H. Casey
Non-USGS Publications**
Holloway, J. M., Dahlgren, R. A., Hansen, B. & Casey, W. H., 1998, Contribution of bedrock nitrogen to high nitrate concentrations in stream water: Nature 395, 785-788, https://doi.org/10.1038/27410.
Holloway, J. M. & Dahlgren, R. A., 1999, Geologic nitrogen in biogeochemical cycling: Geology 27, 567-570, https://doi.org/10.1130/0091-7613(1999)027%3C0567:GNITBC%3E2.3.CO;2.
Holloway, J.M. & Petersen, E.U., 1991 Mineralization and geochemistry of the Escalante silver mine, Iron County, Utah: (ed., Allison, M. Lee et al.) Utah Geological Association Publication 18, p 83-95.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.