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Vol. 14, No. 2 – 2017
USGS scientist collecting water-quality samples from the Enoree River, SC

Study Highlights the Complexity of Chemical Mixtures in United States Streams

A new study highlights the complexity of chemical mixtures in streams and advances the understanding of wildlife and human exposure to complex chemical mixtures. ...

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A water tank

Understanding Chemical and Microbial Contaminants in Public Drinking Water

Collaborative joint agency study provides nationally consistent and rigorously quality-assured datasets on a wide range of chemical and microbial contaminants present in source and treated public drinking water supplies. Tap water was not analyzed in this study. ...

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USGS scientist collecting groundwater samples

Poly- and Perfluoroalkyl Substances From Firefighting and Domestic Wastewater Remain in Groundwater for Decades

New study explores the persistence and transport of poly- and perfluoroalkyl substances (PFASs) that originated from both firefighting and domestic wastewater sources. Although the fire training area and wastewater facility were decommissioned over 20 years ago, both sites continue to be sources of PFASs to groundwater. ...

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Golden eagle chick in nest with ground squirrel and raptor carcasses

New Method Improves Measurement of Bullet Fragments in Culled Varmints

A creative combination of radiography and techniques borrowed from meat processing and gold prospecting led to a better method for determining the lead content in ground squirrels shot by hunters to evaluate potential exposure risk to avian scavengers such as golden eagles (Aquila chrysaetos). ...

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larval mussels

Assessing Contaminant Hazards Without a Critter—Advancements in Alternatives to Animal Toxicity Testing

During the past two decades, great strides have been made toward the development and use of ecotoxicity testing methods that reduce animal use or replace animals altogether with in vitro tests or in silico models. ...

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Screen shot of the USGS avian influenza interactive web application

Frequent Fliers—Web-Based Tool Aids in Understanding the Role of Wild Birds in Transmission of Avian Influenza

This visualization tool helps researchers and public health officials see how relations between poultry density and waterfowl migration routes affect the threat of avian influenza to people and the poultry industry. ...

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USGS scientist are collecting water samples on the wastewater disposal facility

Examining Shifts in Stream Microbial Communities Exposed to Oil and Gas Wastewaters

Shifts in the overall microbial community structure were present in stream sediments that contained chemicals associated with unconventional oil and gas wastewaters. This work is part of a long-term study designed to understand persistence of chemicals from oil and gas wastewaters in sediments and water and how those factors might be related to exposures and adverse health effects, if any, on organisms. ...

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USGS scientist measuring dissolved oxygen

Trace Levels of Organic Chemicals Limited to Local Reaches of a Stream near an Oil and Gas Wastewater Disposal Facility

Organic contaminants that were present in Wolf Creek near a wastewater disposal facility were not evident farther downstream where Wolf Creek enters the New River. Wolf Creek and the New River are used for drinking water and recreational purposes. ...

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USGS scientist collecting a groundwater sample

Nitrate Addition Enhances Arsenic Immobilization in Groundwater

The addition of nitrate in a low oxygen groundwater resulted in the immobilization of naturally occurring dissolved arsenic and the conversion of nitrate to innocuous nitrogen gas. ...

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USGS scientists recording inforamtion on water-quality samples and field water-quality parameters

Scientists Start at the Base of the Food Chain to Understand Contaminant Affects on Energy Cycling in Streams

Study examines the potential adverse effects of fungicides on leaf decomposition by microbes and aquatic invertebrates. ...

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Tree swallow nestlings (Tachycineta bicolor) in a nesting box

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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Iron precipitates in a stream - Woman standing on gravel bar

Fish Diets Switch From Aquatic to Terrestrial Insects in Streams Affected By Metal Contamination

A riparian zone rich in terrestrial insects can provide an alternate food source for fish in metal-impacted watersheds. ...

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An artistic illustration depicting virus transport pathways in the environment

Human and Bovine Virus Prevalence in Some Great Lakes Tributaries Influenced by Watershed-Specific and Seasonal Characteristics

Human enteric and bovine-specific viruses were detected in eight Great Lakes tributaries. ...

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Dr. Diann J. Prosser examining a ruddy shelduck

Presidential Early Career Award Given to Environmental Health Researcher Diann Prosser

Dr. Diann J. Prosser was awarded the Presidential Early Career Awards for Scientists and Engineers (PECASE). The PECASE is the highest honor bestowed by the United States Government on science and engineering professionals in the early stages of their independent research careers. ...

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Dr. Keith A. Loftin in a laboratory

USGS Scientist Receives Award for Assistance with National Wetlands Assessment

USGS scientist Dr. Keith A. Loftin received the U.S. Environmental Protection Agency (EPA) Office of Water's Achievement in Science and Technology Award for his contributions to the National Wetlands Condition Assessment. ...

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Michael J. Focazio, Editor
Kathy E. Lee, Managing Editor
Timothy J. Reilly, Managing Editor
David W. Morganwalp, Coordinating Editor
Stephanee R. Walker, Copy Editor

05/09/2017

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Page Last Modified: 09-May-2017 @ 10:42:31 AM EDT