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Toxic Substances Hydrology Featured Science Activities

Our science is summarized in a series of feature articles that highlight recent U.S. Geological Survey (USGS) environmental health science activities. They are short summaries of peer-reviewed journal articles and USGS reports co-authored by our specialized teams of scientists.
 

Filter Total Items: 213

Damage Assessment and Restoration Tracking System (DARTS)—A new tool to support the Department of Interior's Natural Resource Damage Assessment and Restoration Program

A new, web-based interactive tool has been developed to increase access to the Department of Interior (DOI) Natural Resource Damage Assessment and Restoration (NRDAR) Program information.
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Damage Assessment and Restoration Tracking System (DARTS)—A new tool to support the Department of Interior's Natural Resource Damage Assessment and Restoration Program

A new, web-based interactive tool has been developed to increase access to the Department of Interior (DOI) Natural Resource Damage Assessment and Restoration (NRDAR) Program information.
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Organic Contaminant Levels and the Reproductive Success of Ospreys in Chesapeake Bay

Changes in the regulation and use of some organic chemicals have caused environmental concentrations to stabilize or decline during the past 35 years coincident with a rebound in the osprey (Pandion haliaetus) population of the Chesapeake Bay.
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Organic Contaminant Levels and the Reproductive Success of Ospreys in Chesapeake Bay

Changes in the regulation and use of some organic chemicals have caused environmental concentrations to stabilize or decline during the past 35 years coincident with a rebound in the osprey (Pandion haliaetus) population of the Chesapeake Bay.
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Synthesis of Mercury Distribution and Bioaccumulation Across Western North America

The unique combination of natural processes and human activities present in western North America can strongly affect the exposure of fish and birds to methylmercury, the most toxic form of mercury (Hg).
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Synthesis of Mercury Distribution and Bioaccumulation Across Western North America

The unique combination of natural processes and human activities present in western North America can strongly affect the exposure of fish and birds to methylmercury, the most toxic form of mercury (Hg).
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Swine Manure Application as a Source of Hepatitis E Virus and other Livestock-Related Pathogens

The presence of indicator bacteria, hepatitis E virus (HEV), and numerous bacterial pathogen genes increased following precipitation-induced runoff events in streams draining adjacent land surfaces in Iowa where swine manure was recently applied.
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Swine Manure Application as a Source of Hepatitis E Virus and other Livestock-Related Pathogens

The presence of indicator bacteria, hepatitis E virus (HEV), and numerous bacterial pathogen genes increased following precipitation-induced runoff events in streams draining adjacent land surfaces in Iowa where swine manure was recently applied.
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Recovery of Stream and Adjacent Groundwater After Wastewater Treatment Facility Closure

The hydrology and chemistry of a wastewater-impacted stream and adjacent groundwater responded rapidly (had fewer chemicals at lower concentrations) following wastewater treatment facility shutdown. However, the adjacent shallow groundwater remained a continuing source of some wastewater-derived contaminants to the stream at least 1 year post-shutdown.
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Recovery of Stream and Adjacent Groundwater After Wastewater Treatment Facility Closure

The hydrology and chemistry of a wastewater-impacted stream and adjacent groundwater responded rapidly (had fewer chemicals at lower concentrations) following wastewater treatment facility shutdown. However, the adjacent shallow groundwater remained a continuing source of some wastewater-derived contaminants to the stream at least 1 year post-shutdown.
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Study Reveals Processes that Control Uranium Bioavailability in a Freshwater Snail—Relevance to Aquatic Biota in the Grand Canyon Area

Scientists refined an existing speciation model to identify key biogeochemical processes controlling dissolved uranium bioavailability to a freshwater snail. This information is important to advance current understanding and prediction of the ecological risk posed by uranium mining to freshwater ecosystems, including federally managed lands such as in the Grand Canyon area.
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Study Reveals Processes that Control Uranium Bioavailability in a Freshwater Snail—Relevance to Aquatic Biota in the Grand Canyon Area

Scientists refined an existing speciation model to identify key biogeochemical processes controlling dissolved uranium bioavailability to a freshwater snail. This information is important to advance current understanding and prediction of the ecological risk posed by uranium mining to freshwater ecosystems, including federally managed lands such as in the Grand Canyon area.
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New Guide to Help Identify Harmful Algal Blooms

To assist Native American and Alaska Native communities, U.S. Geological Survey (USGS) scientists developed a guide to evaluate algal blooms for the presence of cyanobacteria that are known to produce a variety of toxins.
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New Guide to Help Identify Harmful Algal Blooms

To assist Native American and Alaska Native communities, U.S. Geological Survey (USGS) scientists developed a guide to evaluate algal blooms for the presence of cyanobacteria that are known to produce a variety of toxins.
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Nutrients in Dust from the Sahara Desert cause Microbial Blooms on the East Coast of the United States

Saharan dust nutrients, particularly iron, deposited episodically in tropical marine waters stimulate marine microbial bloom growth and change microbial community structure.
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Nutrients in Dust from the Sahara Desert cause Microbial Blooms on the East Coast of the United States

Saharan dust nutrients, particularly iron, deposited episodically in tropical marine waters stimulate marine microbial bloom growth and change microbial community structure.
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DOI Distinguished Service Award Given to Two Program Scientists

Two U.S. Geological Survey (USGS) Toxic Substances Hydrology Program (TSHP) scientists, Denis R. LeBlanc and Dr. Michael T. Meyer, received the Department of Interior's (DOI) highest honor—the Distinguished Service Award. The award is given to recognize outstanding contribution to science, outstanding skill or ability in the performance of duty, outstanding contribution made during an eminent...
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DOI Distinguished Service Award Given to Two Program Scientists

Two U.S. Geological Survey (USGS) Toxic Substances Hydrology Program (TSHP) scientists, Denis R. LeBlanc and Dr. Michael T. Meyer, received the Department of Interior's (DOI) highest honor—the Distinguished Service Award. The award is given to recognize outstanding contribution to science, outstanding skill or ability in the performance of duty, outstanding contribution made during an eminent...
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New Hepatitis B Virus Discovered in White Sucker (Catostomus commersonii)

The first known hepatitis B virus to infect fish (white sucker; Catostomus commersonii) has been discovered by U.S. Geological Survey (USGS) scientists.
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New Hepatitis B Virus Discovered in White Sucker (Catostomus commersonii)

The first known hepatitis B virus to infect fish (white sucker; Catostomus commersonii) has been discovered by U.S. Geological Survey (USGS) scientists.
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USGS Scientists Measure New Bacterial Nitrogen Removal Process in Groundwater

For the first time, U.S. Geological Survey (USGS), Virginia Institute of Marine Science, and the University of Connecticut scientists have detected active anammox bacteria in groundwater.
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USGS Scientists Measure New Bacterial Nitrogen Removal Process in Groundwater

For the first time, U.S. Geological Survey (USGS), Virginia Institute of Marine Science, and the University of Connecticut scientists have detected active anammox bacteria in groundwater.
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Bacterial Pathogen Genes in Streams related to Animal Type and Hydrologic Conditions

A U.S. Geological Survey (USGS) study elucidates the influence of animal type and environmental variables on bacterial pathogen occurrence in streams under typical watershed conditions.
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Bacterial Pathogen Genes in Streams related to Animal Type and Hydrologic Conditions

A U.S. Geological Survey (USGS) study elucidates the influence of animal type and environmental variables on bacterial pathogen occurrence in streams under typical watershed conditions.
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