Angela Hansen
Biography
My research focuses on source and cycling of organic carbon in aquatic environments. Much of my current work involves the investigation of organic matter optical properties–as measured by absorbance and fluorescence–to demonstrate the utility of these measurements as proxies for organic compounds (i.e. DBPs, oil/gas, wastewater, Hg, etc.). I also supervise our group’s Organic Matter Research Laboratory.
Science and Products
Date published: June 26, 2020
Status: Active Monitoring Cyanotoxins in California's Sacramento-San Joaquin Delta: Fixed Stations and High-Resolution Mapping Surveys
California’s Sacramento-San Joaquin River Delta (Delta) provides drinking water to about 30 million people and irrigation water to the agriculturally rich Central Valley. The Delta is also home to numerous threatened and endangered native species. The health of the Delta's aquatic ecosystems, and fish in particular, have long been in a state of decline. This is associated with decreasing...
Contacts: Angela Hansen, Tamara Kraus
Attribution: California Water Science Center
Year Published: 2018
An initial comparison of pesticides and amphibian pathogens between natural and created wetlands in the New Jersey Pinelands, 2014–16
A study conducted by the U.S. Geological Survey, in cooperation with the New Jersey Pinelands Commission and Montclair State University, was designed to compare pesticide concentrations and the presence and prevalence of amphibian pathogens between natural ponds and two types of created wetlands, excavated ponds and stormwater basins, throughout...
Smalling, Kelly L.; Bunnell, John F.; Cohl, Jonathan; Romanok, Kristin M.; Hazard, Lisa; Monsen, Kirsten; Akob, Denise M.; Hansen, Angela M.; Hladik, Michelle L.; Abdallah, Nicole; Ahmed, Quratulain; Assan, Araba; De Parsia, Matthew; Griggs, Amaryl; McWayne-Holmes, Megan; Patel, Naisargi; Sanders, Corey; Shrestha, Yesha; Stout, Sean M.; Williams, BriannaAttribution: Florence Bascom Geoscience Center, Region 1: North Atlantic-Appalachian, Southwest Biological Science Center, Ecosystems, , Western Ecological Research Center, Ecosystems, Fort Collins Science Center, Ecosystems, Environmental Health, Great Lakes Science Center, Environmental Health, Toxic Substances Hydrology Program, United States of America, Geosciences and Environmental Change Science Center, Land Change Science Program, Region 7: Upper Colorado Basin, United States of America, Wildland Fire Science, California Water Science Center, Water Resources, Great Lakes Science Center, Ecosystems, Fort Collins Science Center, Ecosystems, Geosciences and Environmental Change Science Center, Land Change Science Program, Region 7: Upper Colorado Basin, United States of America, Mapping, Remote Sensing, and Geospatial Data, Woods Hole Coastal and Marine Science Center, Natural Hazards, Coastal and Marine Hazards and Resources Program, Region 1: North Atlantic-Appalachian, United States of America, Upper Midwest Water Science Center, Water Resources, Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Earthquake Hazards Program, Region 7: Upper Colorado Basin, California, United States of America, Western Ecological Research Center, Ecosystems, Fort Collins Science Center, Ecosystems, Cooperative Research Units, Columbia Environmental Research Center, Ecosystems, Region 4: Mississippi Basin, Mapping, Remote Sensing, and Geospatial Data, , Science and Decisions Center, United States of America, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Cooperative Research Units, New Jersey Water Science Center, Water Resources, Region 1: North Atlantic-Appalachian, Kansas Water Science Center, Water Resources, , Fort Collins Science Center, Ecosystems, Central Energy Resources Science Center, Energy Resources Program, Region 7: Upper Colorado Basin, Washington Water Science Center, Water Resources, St. Petersburg Coastal and Marine Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Water, Ohio-Kentucky-Indiana Water Science Center, Ohio, United States of America, St. Petersburg Coastal and Marine Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), , Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center, Environmental Health, Mineral Resources Program, United States of America, Natural Hazards, , Natural Hazards, Science and Decisions Center, United States of America, Western Ecological Research Center, Ecosystems, , Science and Decisions Center, New Jersey Water Science Center, Water Resources, Region 1: North Atlantic-Appalachian
View Citation
Smalling, K.L., Bunnell, J.F., Cohl, J., Romanok, K.M., Hazard, L., Monsen, K., Akob, D.M., Hansen, A., Hladik, M.L., Abdallah, N., Ahmed, Q., Assan, A., De Parsia, M., Griggs, A., McWayne-Holmes, M., Patel, N., Sanders, C., Shrestha, Y., Stout, S., and Williams, B., 2018, An initial comparison of pesticides and amphibian pathogens between natural and created wetlands in the New Jersey Pinelands, 2014–16: U.S. Geological Survey Open-File Report 2018–1077, 18 p., https://doi.org/10.3133/ofr20181077.
Year Published: 2018
Procedures for using the Horiba Scientific Aqualog® fluorometer to measure absorbance and fluorescence from dissolved organic matter
Advances in spectroscopic techniques have led to an increase in the use of optical measurements (absorbance and fluorescence) to assess dissolved organic matter composition and infer sources and processing. Although optical measurements are easy to make, they can be affected by many variables rendering them less comparable, including by...
Hansen, Angela M.; Fleck, Jacob; Kraus, Tamara E. C.; Downing, Bryan D.; von Dessonneck, Travis; Bergamaschi, BrianAttribution: Data, Tools, and Technology, Woods Hole Coastal and Marine Science Center, Natural Hazards, Coastal and Marine Hazards and Resources Program, Region 1: North Atlantic-Appalachian, United States of America, , Science and Decisions Center, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Natural Hazards, Woods Hole Coastal and Marine Science Center, Natural Hazards, Coastal and Marine Hazards and Resources Program, Region 1: North Atlantic-Appalachian, United States of America, , Science and Decisions Center, Water, New England Water Science Center, Water Resources, Region 4: Mississippi Basin, Rhode Island, United States of America, Core Science Systems, National Geospatial Program, National Geospatial Technical Operations Center, Biology and Ecosystems, National Wildlife Health Center, Ecosystems, Fish & Wildlife Disease, United States of America, Oregon Water Science Center, Water Resources, California Water Science Center, Water Resources, Western Ecological Research Center, Ecosystems, Cooperative Research Units, Region 1: North Atlantic-Appalachian, New York Water Science Center, Water Resources, Leetown Science Center, Ecosystems, Region 1: North Atlantic-Appalachian, Earth Resources Observation and Science (EROS) Center, Earth Resources Observation and Science Center, United States of America, Wildland Fire Science, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, Mississippi, United States of America, Lower Mississippi-Gulf Water Science Center, Region 4: Mississippi Basin, Water, Central Midwest Water Science Center, Missouri, United States of America, California Water Science Center, Water Resources, Groundwater and Streamflow Information Program, Astrogeology Science Center, Natural Hazards, , , Caribbean-Florida Water Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Earthquake Hazards Program, Region 7: Upper Colorado Basin, United States of America, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, United States of America, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, Washington, United States of America, Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Landslide Hazards Program, Region 7: Upper Colorado Basin, United States of America, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, New Mexico Water Science Center, Water Resources, Region 7: Upper Colorado Basin, Great Lakes Science Center, Ecosystems, United States of America, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, Fort Collins Science Center, Ecosystems, Natural Hazards, Woods Hole Coastal and Marine Science Center, Natural Hazards, Coastal and Marine Hazards and Resources Program, Region 1: North Atlantic-Appalachian, United States of America, California Water Science Center, Water Resources, United States of America, Organic Matter Research Laboratory
View Citation
Hansen, A.M., Fleck, J.A., Kraus, T.E.C., Downing, B.D., von Dessonneck, T., and Bergamaschi, B.A., 2018, Procedures for using the Horiba Scientific Aqualog® fluorometer to measure absorbance and fluorescence from dissolved organic matter: U.S. Geological Survey Open-File Report 2018–1096, 31 p., https://doi.org/10.3133/ofr20181096.
Year Published: 2018
Wetlands receiving water treated with coagulants improve water quality by removing dissolved organic carbon and disinfection byproduct precursors
Constructed wetlands are used worldwide to improve water quality while also providing critical wetland habitat. However, wetlands have the potential to negatively impact drinking water quality by exporting dissolved organic carbon (DOC) that upon disinfection can form disinfection byproducts (DBPs) like trihalomethanes (...
Hansen, Angela M.; Kraus, Tamara E. C.; Bachand, Sandra M.; Horwath, William R.; Bachand, Philip A.M.Attribution: Geosciences and Environmental Change Science Center, Region 7: Upper Colorado Basin, United States of America, Wildland Fire Science, Alaska Science Center, Ecosystems, Region 11: Alaska, Cooperative Research Units, Pacific Coastal and Marine Science Center, Coastal and Marine Hazards and Resources Program, United States of America, Geosciences and Environmental Change Science Center, Region 7: Upper Colorado Basin, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Great Lakes Science Center, Ecosystems, Earth Resources Observation and Science (EROS) Center, Earth Resources Observation and Science Center, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, , Biology and Ecosystems, National Wildlife Health Center, Ecosystems, Fish & Wildlife Disease, United States of America, Fort Collins Science Center, Ecosystems, Land Change Science Program, United States of America, Wildland Fire Science, Water Resources, Texas Water Science Center, Water Resources, Region 6: Arkansas-Rio Grande-Texas-Gulf, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, , Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Energy & Wildlife, , United States of America, Western Ecological Research Center, Ecosystems, Pacific Coastal and Marine Science Center, Coastal and Marine Hazards and Resources Program, United States of America, Fort Collins Science Center, Ecosystems, Alaska Science Center, Ecosystems, Region 11: Alaska, Geology, Geophysics, and Geochemistry Science Center, Region 7: Upper Colorado Basin, Fort Collins Science Center, Ecosystems, United States of America, Wildland Fire Science, St. Petersburg Coastal and Marine Science Center, Land Change Science Program, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), United States of America, Northern Prairie Wildlife Research Center, Ecosystems, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, United States of America, Forest and Rangeland Ecosystem Science Center (FRESC), Environmental Health, Contaminant Biology Program, United States of America, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, United States of America, Gulf of Mexico, Central Energy Resources Science Center, Energy Resources Program, Region 7: Upper Colorado Basin, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Wetland and Aquatic Research Center, Ecosystems, Environments Program, Region 4: Mississippi Basin, United States of America, Gulf of Mexico, Geology, Geophysics, and Geochemistry Science Center, Region 7: Upper Colorado Basin, Western Geographic Science Center, United States of America, Wildland Fire Science, Cooperative Research Units, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, United States of America, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, United States of America, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Energy & Wildlife, United States of America, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, California Water Science Center, Water Resources, Cooperative Research Units, Cooperative Research Units, , Energy and Minerals, Science and Decisions Center, Alaska Science Center, Ecosystems, Region 11: Alaska, United States of America, Molecular Ecology Laboratory, Central Energy Resources Science Center, Energy Resources Program, Region 7: Upper Colorado Basin, Water Resources, , Eastern Geographic Science Center, Region 1: North Atlantic-Appalachian, Pacific Coastal and Marine Science Center, Coastal and Marine Hazards and Resources Program, United States of America, California Water Science Center, Water Resources, Upper Midwest Environmental Sciences Center, Ecosystems, Environments Program, United States of America, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Environments Program, , United States of America, Upper Midwest Environmental Sciences Center, Ecosystems, Upper Midwest Environmental Sciences Center, Ecosystems, Arizona Water Science Center, Water Resources, , Colorado Water Science Center, Water Resources, Region 7: Upper Colorado Basin, Cooperative Research Units, Nevada Water Science Center, Water Resources, Southwest Biological Science Center, Ecosystems, , Western Ecological Research Center, Ecosystems, Wyoming-Montana Water Science Center, Water Resources, United States of America, Natural Hazards, Woods Hole Coastal and Marine Science Center, Natural Hazards, Coastal and Marine Hazards and Resources Program, Region 1: North Atlantic-Appalachian, United States of America, Geology, Alaska Science Center, Region 11: Alaska, United States of America, Central Energy Resources Science Center, Energy Resources Program, Region 7: Upper Colorado Basin, Astrogeology Science Center, Natural Hazards, , , Upper Midwest Environmental Sciences Center, Ecosystems, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, , Cooperative Research Units, Energy & Wildlife, United States of America, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, California Water Science Center, Water Resources, California Water Science Center, Water Resources, Idaho Water Science Center, Water Resources, Cooperative Research Units, United States of America, Wildland Fire Science, Minerals, Eastern Mineral and Environmental Resources Science Center, Mineral Resources Program, Region 1: North Atlantic-Appalachian, United States of America, Cooperative Research Units, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Land Change Science Program, United States of America, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, United States of America, Great Lakes Science Center, Ecosystems, Oregon Water Science Center, Water Resources, Washington Water Science Center, Water Resources, Cooperative Research Units, Great Lakes Science Center, Ecosystems, Core Science Systems, Eastern Energy Resources Science Center, Energy Resources Program, , United States of America, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Cooperative Research Units, Groundwater and Streamflow Information Program, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Water, Colorado Water Science Center, Water Resources, Region 7: Upper Colorado Basin, Colorado, United States of America, Oregon Water Science Center, Water Resources, Pacific Coastal and Marine Science Center, Coastal and Marine Hazards and Resources Program, United States of America, Biology and Ecosystems, Leetown Science Center, Ecosystems, Energy & Wildlife, Region 1: North Atlantic-Appalachian, United States of America, Upper Midwest Environmental Sciences Center, Ecosystems, Science Analytics and Synthesis (SAS), Western Ecological Research Center, Ecosystems, Water Resources, , Science Analytics and Synthesis (SAS), Advanced Research Computing (ARC), Geosciences and Environmental Change Science Center, Land Change Science Program, Region 7: Upper Colorado Basin, United States of America, Natural Hazards, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, United States of America, Water Resources, , Water Resources, Toxic Substances Hydrology Program, United States of America, Alaska Climate Adaptation Science Center, Land Resources, Region 11: Alaska, Wetland and Aquatic Research Center, Ecosystems, Land Change Science Program, Region 4: Mississippi Basin, United States of America, St. Petersburg Coastal and Marine Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Cooperative Research Units, Water, New England Water Science Center, Water Resources, Region 4: Mississippi Basin, Rhode Island, United States of America, Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Earthquake Hazards Program, Region 7: Upper Colorado Basin, United States of America, , Water Resources, Region 4: Mississippi Basin, Environmental Health, Leetown Science Center, Environmental Health, Contaminant Biology Program, Region 1: North Atlantic-Appalachian, United States of America, Arizona Water Science Center, Water Resources, , Biology and Ecosystems, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Wildlife Program, Washington, United States of America, Washington Water Science Center, Water Resources, , Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Biology and Ecosystems, Ecosystems, Wildlife Program, United States of America, Western Ecological Research Center, Ecosystems, Earth Resources Observation and Science (EROS) Center, Earth Resources Observation and Science Center, Geosciences and Environmental Change Science Center, Groundwater and Streamflow Information Program, Region 7: Upper Colorado Basin, Fort Collins Science Center, Ecosystems, Water, Colorado Water Science Center, Water Resources, Region 7: Upper Colorado Basin, United States of America, Geology, Geophysics, and Geochemistry Science Center, Region 7: Upper Colorado Basin, Upper Midwest Water Science Center, Water Resources, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Water, Pennsylvania Water Science Center, Water Resources, Region 1: North Atlantic-Appalachian, Pennsylvania, United States of America, Mapping, Remote Sensing, and Geospatial Data, Geology, Geophysics, and Geochemistry Science Center, Region 7: Upper Colorado Basin, United States of America, Cooperative Research Units, Cooperative Research Units, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Alaska Science Center, Ecosystems, Region 11: Alaska, Alaska Science Center, Ecosystems, Region 11: Alaska, Pacific Coastal and Marine Science Center, Coastal and Marine Hazards and Resources Program, United States of America, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Energy & Wildlife, United States of America, Alaska Science Center, Region 11: Alaska, South Atlantic Water Science Center (SAWSC), Water Resources, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Landslide Hazards Program, Region 7: Upper Colorado Basin, United States of America, Cooperative Research Units, Western Ecological Research Center, Ecosystems, Energy & Wildlife, United States of America, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Southwest Biological Science Center, Ecosystems, , , Energy and Minerals, Science and Decisions Center, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Florence Bascom Geoscience Center, Region 1: North Atlantic-Appalachian, Cooperative Research Units, Alaska Science Center, Ecosystems, Region 11: Alaska, Cooperative Research Units, Columbia Environmental Research Center, Environmental Health, Contaminant Biology Program, Region 4: Mississippi Basin, United States of America, Arizona Water Science Center, Water Resources, , Alaska Science Center, Ecosystems, Region 11: Alaska, United States of America, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Upper Midwest Water Science Center, Water Resources, New York Water Science Center, Water Resources, Alaska Science Center, Ecosystems, Region 11: Alaska, United States of America, Molecular Ecology Laboratory, Upper Midwest Water Science Center, Water Resources, Upper Midwest Water Science Center, Water Resources, Great Lakes Science Center, Ecosystems, United States of America, Alaska Science Center, Ecosystems, Energy & Wildlife, Region 11: Alaska, United States of America, Environmental Health, Northern Rocky Mountain Science Center (NOROCK), Environmental Health, Wildlife Program, , United States of America, Volcano Hazards Program Office, Cooperative Research Units, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, California, United States of America, Idaho Water Science Center, Water Resources, Environmental Health, Wyoming-Montana Water Science Center, Ecosystems, Science Analytics and Synthesis (SAS), Region 7: Upper Colorado Basin, United States of America, Upper Midwest Environmental Sciences Center, Ecosystems, Water, Ohio-Kentucky-Indiana Water Science Center, Indiana, United States of America, Earth Resources Observation and Science (EROS) Center, Earth Resources Observation and Science Center, Geosciences and Environmental Change Science Center, Land Change Science Program, Region 7: Upper Colorado Basin, United States of America, Northern Prairie Wildlife Research Center, Ecosystems, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Wyoming-Montana Water Science Center, Water Resources, , Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Earthquake Hazards Program, Region 7: Upper Colorado Basin, Idaho, United States of America, Pacific Island Ecosystems Research Center, Ecosystems, Northwest - Pacific Islands, , Volcano Hazards Program Office, Ecosystems, Idaho Water Science Center, Water Resources, , Volcano Hazards Program Office, Water Resources, Environmental Health, Alaska Science Center, Environmental Health, Contaminant Biology Program, Region 11: Alaska, United States of America, Western Ecological Research Center, Ecosystems, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, Cooperative Research Units, Cooperative Research Units, Alaska Science Center, Ecosystems, Region 11: Alaska, , Water Resources, Science and Decisions Center, United States of America, , Energy and Minerals, Science and Decisions Center, Water Resources, , Cooperative Research Units, Caribbean-Florida Water Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), , Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Cooperative Research Units, Fort Collins Science Center, Ecosystems, United States of America, Wildland Fire Science, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Energy & Wildlife, , United States of America, Central Energy Resources Science Center, Energy Resources Program, Region 7: Upper Colorado Basin, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, California Water Science Center, Water Resources, National Wildlife Health Center, Ecosystems, Central Energy Resources Science Center, Energy Resources Program, Region 7: Upper Colorado Basin, Geology, Geophysics, and Geochemistry Science Center, Region 7: Upper Colorado Basin, Pacific Island Ecosystems Research Center, Ecosystems, Northwest - Pacific Islands, Water, South Atlantic Water Science Center (SAWSC), Water Resources, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), United States of America, Cooperative Research Units, Cooperative Research Units, Geosciences and Environmental Change Science Center, Region 7: Upper Colorado Basin, Southwest Biological Science Center, Ecosystems, , Southwest Biological Science Center, Ecosystems, , Cooperative Research Units, Natural Hazards, Geosciences and Environmental Change Science Center, Region 7: Upper Colorado Basin, United States of America, Wildland Fire Science, Cooperative Research Units, Cooperative Research Units, St. Petersburg Coastal and Marine Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), New York Water Science Center, Water Resources, Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Geomagnetism Program, Region 7: Upper Colorado Basin, United States of America, , Volcano Hazards Program Office, Natural Hazards, Pacific Coastal and Marine Science Center, Natural Hazards, Coastal and Marine Hazards and Resources Program, California, United States of America, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Land Change Science Program, United States of America, Wildland Fire Science, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, Great Lakes Science Center, Ecosystems, United States of America, Pacific Coastal and Marine Science Center, Western Fisheries Research Center, Ecosystems, Fisheries Program, California Water Science Center, Water Resources, United States of America, Organic Matter Research Laboratory
View Citation
Hansen AM, Kraus TEC, Bachand SM, Horwath WR, Bachand PAM. Wetlands receiving water treated with coagulants improve water quality by removing dissolved organic carbon and disinfection byproduct precursors. Science of The Total Environment 2018; 622–623: 603-613.
Year Published: 2016
Optical properties of dissolved organic matter (DOM): Effects of biological and photolytic degradation
Advances in spectroscopic techniques have led to an increase in the use of optical properties (absorbance and fluorescence) to assess dissolved organic matter (DOM) composition and infer sources and processing. However, little information is available to assess the impact of biological and photolytic processing on the optical properties of...
Hansen, Angela; Kraus, Tamara E. C.; Pellerin, Brian; Fleck, Jacob; Downing, Bryan D.; Bergamaschi, BrianAttribution: Texas Water Science Center, Water Resources, Region 6: Arkansas-Rio Grande-Texas-Gulf, Southwest Biological Science Center, Ecosystems, , Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Cooperative Research Units, , Water Resources, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Great Lakes Science Center, Ecosystems, Alaska Science Center, Ecosystems, Region 11: Alaska, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, Cooperative Research Units, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, , Drought, Western Ecological Research Center, Ecosystems, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Florida, United States of America, New Jersey Water Science Center, Environmental Health, Toxic Substances Hydrology Program, Region 1: North Atlantic-Appalachian, Hurricane Sandy, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, Water Resources, , San Francisco Bay and Sacramento-San Joaquin Delta Estuary, Upper Midwest Water Science Center, Water Resources, Southwest Biological Science Center, Ecosystems, , Alaska Science Center, Ecosystems, Region 11: Alaska, Central Midwest Water Science Center, Water Resources, Region 4: Mississippi Basin, , Volcano Hazards Program Office, Texas Water Science Center, Water Resources, Region 6: Arkansas-Rio Grande-Texas-Gulf, Cooperative Research Units, Minerals, Alaska Science Center, Energy and Minerals, Mineral Resources Program, Region 7: Upper Colorado Basin, Alaska, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, Alaska Science Center, Ecosystems, Region 11: Alaska, Water Resources, Alaska Science Center, Ecosystems, Region 11: Alaska, Cooperative Research Units, Alaska Climate Adaptation Science Center, Land Resources, Region 11: Alaska, Southwest Biological Science Center, Ecosystems, , Southwest Biological Science Center, Ecosystems, , , John Wesley Powell Center for Analysis and Synthesis, Environmental Health, Toxic Substances Hydrology Program, John Wesley Powell Center for Analysis and Synthesis, Texas Water Science Center, Water Resources, Region 6: Arkansas-Rio Grande-Texas-Gulf, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Energy & Wildlife, , United States of America, Western Geographic Science Center, Florence Bascom Geoscience Center, Region 1: North Atlantic-Appalachian, Pacific Coastal and Marine Science Center, Cooperative Research Units, Central Midwest Water Science Center, Water Resources, Region 4: Mississippi Basin, United States of America, , Energy and Minerals, Science and Decisions Center, Minerals, , Energy and Minerals, Mineral Resources Program, Region 7: Upper Colorado Basin, Colorado, Kansas Water Science Center, Water Resources, , Kansas Water Science Center, Water Resources, , Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Minerals, National Minerals Information Center, Mineral Resources Program, Region 1: North Atlantic-Appalachian, United States of America, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, California, United States of America, San Francisco Bay and Sacramento-San Joaquin Delta Estuary, Minerals, , Energy and Minerals, Science and Decisions Center, Nevada, United States of America, Western Geographic Science Center, Upper Midwest Water Science Center, Environmental Health, Toxic Substances Hydrology Program, Western Ecological Research Center, Ecosystems, Upper Midwest Water Science Center, Water Resources, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, United States of America, Geosciences and Environmental Change Science Center, Groundwater and Streamflow Information Program, Region 7: Upper Colorado Basin, Cooperative Research Units, Dakota Water Science Center, Water Resources, United States of America, Water Resources, Groundwater and Streamflow Information Program, United States of America, Minerals, , Energy and Minerals, Science and Decisions Center, Wyoming, Alaska Science Center, Region 11: Alaska, Upper Midwest Water Science Center, Water Resources, Cooperative Research Units, Leetown Science Center, Ecosystems, Region 1: North Atlantic-Appalachian, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Western Ecological Research Center, Ecosystems, Land Change Science Program, United States of America, Cooperative Research Units, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, Louisiana, St. Petersburg Coastal and Marine Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), St. Petersburg Coastal and Marine Science Center, Region 2: South Atlantic-Gulf (Includes Puerto Rico and the U.S. Virgin Islands), Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, Alaska Science Center, Ecosystems, Region 11: Alaska, Patuxent Wildlife Research Center, Ecosystems, Region 1: North Atlantic-Appalachian, , Energy and Minerals, Science and Decisions Center, Woods Hole Coastal and Marine Science Center, Region 1: North Atlantic-Appalachian, Cooperative Research Units, Water Resources, , National Wildlife Health Center, Ecosystems, Region 11: Alaska, Wetland and Aquatic Research Center, Ecosystems, Region 4: Mississippi Basin, U.S. Virgin Islands, United States of America, Water Resources, Toxic Substances Hydrology Program, United States of America, Reston Microbiology Laboratory, Water Resources, Toxic Substances Hydrology Program, United States of America, Reston Microbiology Laboratory, National Wildlife Health Center, Ecosystems, Cooperative Research Units, Natural Hazards, Geologic Hazards Science Center, Natural Hazards, Earthquake Hazards Program, Region 7: Upper Colorado Basin, United States of America, Columbia Environmental Research Center, Ecosystems, Region 4: Mississippi Basin, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Geosciences and Environmental Change Science Center, Groundwater and Streamflow Information Program, Region 7: Upper Colorado Basin, , Water Resources, Great Lakes Science Center, Ecosystems, Geology, Geophysics, and Geochemistry Science Center, Region 7: Upper Colorado Basin, Cooperative Research Units, Cooperative Research Units, Lower Mississippi-Gulf Water Science Center, Region 4: Mississippi Basin, Alaska Science Center, Ecosystems, Region 11: Alaska, Pacific Coastal and Marine Science Center, Water Resources, , Cooperative Research Units, Western Ecological Research Center, Ecosystems, Northern Prairie Wildlife Research Center, Ecosystems, Biology and Ecosystems, Western Ecological Research Center, Ecosystems, Energy & Wildlife, United States of America, Western Ecological Research Center, Ecosystems, Earthquake Science Center, Natural Hazards, Earthquake Hazards Program, San Francisco Bay and Sacramento-San Joaquin Delta Estuary, Biology and Ecosystems, Western Fisheries Research Center, Ecosystems, Fisheries Program, United States of America, Cooperative Research Units, Lower Mississippi-Gulf Water Science Center, Water Resources, Region 6: Arkansas-Rio Grande-Texas-Gulf, Columbia Environmental Research Center, Ecosystems, Region 4: Mississippi Basin, Florence Bascom Geoscience Center, Region 1: North Atlantic-Appalachian, Oceans, Pacific Coastal and Marine Science Center, Natural Hazards, Coastal and Marine Hazards and Resources Program, California, United States of America, Cooperative Research Units, Pacific Coastal and Marine Science Center, Cooperative Research Units, Forest and Rangeland Ecosystem Science Center (FRESC), Ecosystems, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, Water, Pennsylvania Water Science Center, Water Resources, Region 1: North Atlantic-Appalachian, Pennsylvania, United States of America, Pennsylvania Water Science Center, Water Resources, Region 1: North Atlantic-Appalachian, Northern Rocky Mountain Science Center (NOROCK), Ecosystems, Cooperative Research Units, Geosciences and Environmental Change Science Center, Groundwater and Streamflow Information Program, Region 7: Upper Colorado Basin, Cooperative Research Units, Central Energy Resources Science Center, Energy Resources Program, Region 7: Upper Colorado Basin, Cooperative Research Units, Cooperative Research Units, Cooperative Research Units, St. Petersburg Coastal and Marine Science Center, 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Year Published: 2015
Mercury, monomethyl mercury, and dissolved organic carbon concentrations in surface water entering and exiting constructed wetlands treated with metal-based coagulants, Twitchell Island, California
Coagulation with metal-based salts is a practice commonly employed by drinking-water utilities to decrease particle and dissolved organic carbon concentrations in water. In addition to decreasing dissolved organic carbon concentrations, the effectiveness of iron- and aluminum-based coagulants for decreasing dissolved concentrations both of...
Stumpner, Elizabeth B.; Kraus, Tamara E.C.; Fleck, Jacob A.; Hansen, Angela M.; Bachand, Sandra M.; Horwath, William R.; DeWild, John F.; Krabbenhoft, David P.; Bachand, Philip A.M.Attribution: Water, California Water Science Center, , Water Resources, United States of America, Organic Matter Research Laboratory
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Stumpner, E.B., Kraus, T.E.C., Fleck, J.A., Hansen, A.M., Bachand, S.M., Horwath, W.R., DeWild, J.F., Krabbenhoft, D.P., and Bachand, P.A.M., 2015, Mercury, monomethyl mercury, and dissolved organic carbon concentrations in surface water entering and exiting constructed wetlands treated with metal-based coagulants, Twitchell Island, California: U.S. Geological Survey Data Series 950, 26 p., http://dx.doi.org/10.3133/ds950.
Date published: July 7, 2020
Scientists Launch Two-Pronged Approach to Map Cyanotoxins in Bay-Delta
Over the last few decades the Sacramento-San Joaquin River Delta has experienced declines in phytoplankton productivity and a shift in species composition resulting in observed increases in harmful algal blooms (HABs).
Attribution: California Water Science Center