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Contaminant Transport and Effects

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Small Mammal Bioaccumulation of Contaminants and Radioactivity near a Mixed Low-level Radioactive and Hazardous Chemical Waste Site—Science to Understand Wildlife Exposure to Environmental Contaminants

Pilot-study results document the presence, concentrations, and distribution of polyfluoroalkyl substances (PFASs), polychlorinated biphenyls (PCBs), and tritium in small mammals, insects, plants, and soils adjacent to a mixed low-level radioactive and hazardous chemical waste site near Beatty, Nevada, and provide a better understanding of potential exposure pathways.
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Small Mammal Bioaccumulation of Contaminants and Radioactivity near a Mixed Low-level Radioactive and Hazardous Chemical Waste Site—Science to Understand Wildlife Exposure to Environmental Contaminants

Pilot-study results document the presence, concentrations, and distribution of polyfluoroalkyl substances (PFASs), polychlorinated biphenyls (PCBs), and tritium in small mammals, insects, plants, and soils adjacent to a mixed low-level radioactive and hazardous chemical waste site near Beatty, Nevada, and provide a better understanding of potential exposure pathways.
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Framework for Examining Stream Ecosystem Health in Areas of Shale Gas Development—A Multi-Parameter Watershed-Based Case Study in Pennsylvania

In a case study of 25 headwater streams in Pennsylvania, no statistically significant associations were determined between shale gas development and geochemical tracers of produced waters or measures of microbial and macroinvertebrate community composition. Although the results are specific to the region studied, the integrated biological and geochemical framework provides a tool for examining...
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Framework for Examining Stream Ecosystem Health in Areas of Shale Gas Development—A Multi-Parameter Watershed-Based Case Study in Pennsylvania

In a case study of 25 headwater streams in Pennsylvania, no statistically significant associations were determined between shale gas development and geochemical tracers of produced waters or measures of microbial and macroinvertebrate community composition. Although the results are specific to the region studied, the integrated biological and geochemical framework provides a tool for examining...
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Are Tumors in Wild Fish Harvested in the Great Lakes Region Related to Contaminants in Water Resources?

Our specialized teams of scientists are working in our laboratories and at field sites around the Great Lakes in collaboration with other federal and state resource agencies to document the prevalence of skin and liver tumors in fish. Tumor prevalence in white suckers (Catostomus commersonii), a fish harvested as a food source by local communities, is related to the degree of urbanization in the...
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Are Tumors in Wild Fish Harvested in the Great Lakes Region Related to Contaminants in Water Resources?

Our specialized teams of scientists are working in our laboratories and at field sites around the Great Lakes in collaboration with other federal and state resource agencies to document the prevalence of skin and liver tumors in fish. Tumor prevalence in white suckers (Catostomus commersonii), a fish harvested as a food source by local communities, is related to the degree of urbanization in the...
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Bioactive Chemicals Research Laboratory

The Bioactive Chemicals Research Laboratory applies a collaborative transdisciplinary approach to conduct research to minimize the risk to human and aquatic organism health from exposure to contaminants in water supplies.
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Bioactive Chemicals Research Laboratory

The Bioactive Chemicals Research Laboratory applies a collaborative transdisciplinary approach to conduct research to minimize the risk to human and aquatic organism health from exposure to contaminants in water supplies.
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Michigan Bacteriological Research Laboratory

Microbiologists at the Michigan Bacteriological Research Laboratory (MI-BaRL) use a wide array of traditional and modern molecular approaches to evaluate microbial pathogens and antimicrobial resistance pathways in the environment.
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Michigan Bacteriological Research Laboratory

Microbiologists at the Michigan Bacteriological Research Laboratory (MI-BaRL) use a wide array of traditional and modern molecular approaches to evaluate microbial pathogens and antimicrobial resistance pathways in the environment.
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Exploring the Suitability of a Modeling Approach to Estimate Contaminant Occurrence in Drinking Water Sources

Scientists explored the suitability of the DeFacto Reuse in our Nation's Consumable Supply (DRINCS) model to estimate the likelihood of contaminants from upstream wastewater discharges to enter drinking water facility intakes.
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Exploring the Suitability of a Modeling Approach to Estimate Contaminant Occurrence in Drinking Water Sources

Scientists explored the suitability of the DeFacto Reuse in our Nation's Consumable Supply (DRINCS) model to estimate the likelihood of contaminants from upstream wastewater discharges to enter drinking water facility intakes.
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Systematic Approach to Understanding Tree Swallow Health in the Great Lakes Region—Science to Inform Restoration

Four papers by U.S. Geological Survey (USGS) scientists document tree swallow (Tachycineta bicolor) chemical exposure, physiological responses, and reproductive success in the Great Lakes region. These studies were designed to understand if there are health threats to swallows from contaminant exposure, and to provide resource managers with information about the actual as opposed to the perceived...
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Systematic Approach to Understanding Tree Swallow Health in the Great Lakes Region—Science to Inform Restoration

Four papers by U.S. Geological Survey (USGS) scientists document tree swallow (Tachycineta bicolor) chemical exposure, physiological responses, and reproductive success in the Great Lakes region. These studies were designed to understand if there are health threats to swallows from contaminant exposure, and to provide resource managers with information about the actual as opposed to the perceived...
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Scientists Identify Processes that Affect Fish Mercury Concentrations in Estuarine Wetlands

In a study designed to help resource managers when considering mercury exposure risk, scientists determined that sulfur cycling—a process closely related to mercury methylation rates—and ecological conditions that influence exposure are important factors affecting fish mercury concentrations in estuarine wetlands.
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Scientists Identify Processes that Affect Fish Mercury Concentrations in Estuarine Wetlands

In a study designed to help resource managers when considering mercury exposure risk, scientists determined that sulfur cycling—a process closely related to mercury methylation rates—and ecological conditions that influence exposure are important factors affecting fish mercury concentrations in estuarine wetlands.
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Selected Pharmaceuticals Not Likely to Persist in Wild Fish: Results of Uptake and Elimination Testing

Laboratory study shows that both uptake and elimination of selected pharmaceuticals within bluegill tissues is rapid indicating that persistence in bluegills in the environment is likely to be low except in those fish that reside downstream from a consistent, substantial, contaminant source.
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Selected Pharmaceuticals Not Likely to Persist in Wild Fish: Results of Uptake and Elimination Testing

Laboratory study shows that both uptake and elimination of selected pharmaceuticals within bluegill tissues is rapid indicating that persistence in bluegills in the environment is likely to be low except in those fish that reside downstream from a consistent, substantial, contaminant source.
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Endocrine Active Chemical Screening Tests Optimized to Improve Precision, Accuracy, and Timeliness

Scientists optimized existing endocrine active chemical screening tests to improve their precision, accuracy, and ability to screen more samples in a shorter time-frame. The optimization was done to more rapidly obtain results from the bioassays so that research on the risks of endocrine active chemical exposure can proceed more rapidly.
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Endocrine Active Chemical Screening Tests Optimized to Improve Precision, Accuracy, and Timeliness

Scientists optimized existing endocrine active chemical screening tests to improve their precision, accuracy, and ability to screen more samples in a shorter time-frame. The optimization was done to more rapidly obtain results from the bioassays so that research on the risks of endocrine active chemical exposure can proceed more rapidly.
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Program Scientist Receives Meritorious Service Award

Dr. Isabelle M. Cozzarelli received the U.S. Department of Interior's second highest honorary award—the Meritorious Service Award—for her numerous contributions to understanding the biogeochemical controls of contaminant degradation in groundwater and near-surface environments.
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Program Scientist Receives Meritorious Service Award

Dr. Isabelle M. Cozzarelli received the U.S. Department of Interior's second highest honorary award—the Meritorious Service Award—for her numerous contributions to understanding the biogeochemical controls of contaminant degradation in groundwater and near-surface environments.
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Low Levels of Contaminants Found in Great Lakes Tree Swallow Nestlings

Tree swallow nestlings at most study sites in the Great Lakes basin were minimally exposed to organic contaminants.
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Low Levels of Contaminants Found in Great Lakes Tree Swallow Nestlings

Tree swallow nestlings at most study sites in the Great Lakes basin were minimally exposed to organic contaminants.
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