JoAnn Holloway
JoAnn Holloway is a Research Physical Scientist (biogeochemistry) with the Geology, Geophysics, and Geochemistry Science Center.
Soil is the basis for terrestrial ecosystems, influencing vegetation patterns and water quality. JoAnn 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 historic 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 interdiscipline collaborations to evaluate the impact of land use and natural disasters (e.g., hurricane surge, wildfires) on soil and water quality.
Professional Experience
Research Geologist, 2005 - present
U.S. Geological Survey, Geology, Geophysics, and Geochemistry 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
Using stable isotopes to understand hydrochemical processes in and around a Prairie Pothole wetland in the Northern Great Plains, USA
Shoreline surveys of oil-impacted marsh in southern Louisiana, July to August 2010
Carbon and nitrogen biogeochemistry of a Prairie Pothole Wetland, Stutsman County, North Dakota, USA
Ammonium in thermal waters of Yellowstone National Park: Processes affecting speciation and isotope fractionation
U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative-2009 Annual Report
Source and fate of inorganic solutes in the Gibbon River, Yellowstone National Park, Wyoming, USA: I. Low-flow discharge and major solute chemistry
Development of assessment methodologies in support of USGS integrated science-Wyoming Landscape Conservation Initiative
Combined ecological and geologic perspectives in ecosystem studies
A regional soil and sediment geochemical study in northern California
A regional-scale study of chromium and nickel in soils of northern California, USA
Geomorphic controls on mercury accumulation in soils from a historically mined watershed, Central California Coast Range, USA
Spatial and seasonal variations in mercury methylation and microbial community structure in a historic mercury mining area, Yolo County, California
Non-USGS Publications**
**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
Using stable isotopes to understand hydrochemical processes in and around a Prairie Pothole wetland in the Northern Great Plains, USA
Shoreline surveys of oil-impacted marsh in southern Louisiana, July to August 2010
Carbon and nitrogen biogeochemistry of a Prairie Pothole Wetland, Stutsman County, North Dakota, USA
Ammonium in thermal waters of Yellowstone National Park: Processes affecting speciation and isotope fractionation
U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative-2009 Annual Report
Source and fate of inorganic solutes in the Gibbon River, Yellowstone National Park, Wyoming, USA: I. Low-flow discharge and major solute chemistry
Development of assessment methodologies in support of USGS integrated science-Wyoming Landscape Conservation Initiative
Combined ecological and geologic perspectives in ecosystem studies
A regional soil and sediment geochemical study in northern California
A regional-scale study of chromium and nickel in soils of northern California, USA
Geomorphic controls on mercury accumulation in soils from a historically mined watershed, Central California Coast Range, USA
Spatial and seasonal variations in mercury methylation and microbial community structure in a historic mercury mining area, Yolo County, California
Non-USGS Publications**
**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.