Contaminant Biology

Multidisciplinary Science

Filter Total Items: 11
Date published: April 7, 2021
Status: Completed

Flood Redistributes Mercury in Grand Canyon Aquatic Food Webs

Scientists coupled the concepts of energy flow through food webs with measurements of mercury in organic matter and animals to estimate mercury fluxes and fate during an experimental flood in the Colorado River. The flood redistributed mercury in simple, upstream food webs but not in more complex, downstream food webs. 

Date published: May 7, 2019
Status: Active

Sublethal Effects of Contaminants in Aquatic Food Webs—Research Challenges and Considerations for Future Studies

U.S. Geological Survey (USGS) and academic scientists partnered to identify challenges and provide considerations for future scientific study designs to advance our understanding of the often subtle sublethal effects of contaminants on individuals, populations, communities, and entire aquatic food webs. 

Contacts: Kelly Smalling
Date published: September 26, 2018
Status: Active

Is Uranium in Water Resources near the Grand Canyon a Health Hazard?

The public is concerned that uranium in natural geologic formations, mine tailings, dusts, water, and other geologic materials can pose a health hazard to humans and wildlife.

Our specialized teams of hydrologists, chemists, and geologists working together at a field site in the Grand Canyon region of the United States have shown:

Elevated uranium concentrations (above the...

Date published: September 26, 2018
Status: Active

Can There be Unintended Benefits when Wastewater Treatment Infrastructure is Upgraded?

Science from the U.S. Geological Survey (USGS) and other entities has shown that a mixture of natural and synthetic estrogens and other similar chemicals are discharged from wastewater treatment plants (WWTPs) to streams and rivers.

USGS and University of Colorado hydrologists, chemists, geologists, and biologists studied the chemistry and biology of Boulder Creek downstream of Boulder ...

Date published: September 11, 2018
Status: Active

Food Resources Science Team

The team studies the movement of toxicants and pathogens associated with food production through watersheds and aquifers, to water resources where exposure can occur. That information is used to understand if there are adverse effects upon exposure and to develop decision tools to protect health.

Date published: September 11, 2018
Status: Active

Water and Wastewater Infrastructure Science Team

The team studies toxicants and pathogens in water resources from their sources, through watersheds, aquifers, and infrastructure to human and wildlife exposures. That information is used to develop decision tools that protect human and wildlife health.

Date published: September 11, 2018
Status: Active

Toxins and Harmful Algal Blooms Science Team

The team develops advanced methods to study factors driving algal toxin production, how and where wildlife or humans are exposed to toxins, and ecotoxicology.  That information is used to develop decision tools to understand if toxin exposure leads to adverse health effects in order to protect human and wildlife health....

Date published: September 11, 2018
Status: Active

Disaster Science

Natural (coastal storms, wildfires, floods) and human-induced (structural failures, building collapse, oil, and/or chemical spills) disasters occur every year in the United States. Minimizing loss of human life and damages to personal property and infrastructure is the focus of most disaster response and preparedness activities by federal, state, and local communities. However, the potential...

Contacts: Mathew Struckhoff
Date published: August 23, 2018
Status: Active

Fishing and Hunting Science Team

The Fishing and Hunting integrated science team focuses on contaminant and pathogen exposures in the environment that could impact the presence and vitality of fish and wildlife populations that drive commercial, recreational and subsistence activities such as hunting and fishing. If actual risks are identified this project will inform how to economically and effectively minimize...

Date published: July 12, 2018
Status: Active

Ecologically-Driven Exposure Pathways Science Team

The Ecologically-Driven Exposure pathways team identifies internal and external pathways and processes that can alter exposure and toxicity of contaminants and pathogens to wildlife the environment. That information is used to distinguish actual health risks to fish and wildlife. If actual risks are identified this project will inform how to economically and effectively minimize risk...

Date published: April 18, 2018
Status: Active

Energy Integrated Science Team

 

The Energy Integrated Science Team focuses on the potential for contaminant exposures in the environment that might originate from energy resource activities including, transportation, storage, extraction, waste management and restoration. Perceived health risks to humans and other organisms will be distinguished from actual risks, if any.  If actual risks are identified...