Environmental Health

Filter Total Items: 353
Date published: December 29, 2106
Status: Completed

Sources of Microbial Contamination at Public Beaches, Santa Barbara

The focus of this study is on analysis of existing hydrologic, chemical, and microbiological data; collection of surface-water and shallow ground-water hydrologic, chemical, and microbiological data; and characterization of dissolved organic carbon composition.

Contacts: John Izbicki
Date published: March 20, 2019
Status: Active

Immune System Changes and Susceptibility to Disease in Birds Exposed to Environmental Contaminants

Disease dynamics in wildlife are commonly related to changes or increases in environmental stressors that are placed upon an animal. Environmental pollutants are known to affect the immune system of wildlife, resulting in impaired resistance to infection and potential increases in disease outbreaks.

In collaboration with: Jill Jenkins, Ph.D USGS Wetland and Aquatic Research Center;...

Date published: March 11, 2019
Status: Active

Establishing Molecular Methods to Quantitatively Profile Stomach Diet Items of Fish—Application to the Invasive Blue Catfish (Ictalurus furcatus)

The USGS Leetown Science Center (USGS LSC) scientists are collaborating with the Maryland Department of Natural Resources (MDDNR) to develop and evaluate a genetic assay for blue catfish fish diets that will allow us to design a cost-effective monitoring program for determining the diet of wild fish. We will test the utility of this method and, once fully developed, these methods could be...

Date published: March 6, 2019
Status: Active

Determining carcass scavenging rates on major rivers for oil spill response and NRDAR

The Challenge: Oil spills on rivers often result in bird mortalities and to assess the magnitude of injury to birds following an oil spill, searches are usually conducted for debilitated and dead birds. However these searches underestimate the total number of affected birds because dead or oiled birds can be overlooked by searchers and they can also be missed by searchers...

Date published: March 2, 2019
Status: Active

Acid Rain

The USGS has been at the forefront of studying the impacts of acid rain for decades. How does acid rain form? What does it do to the landscape? Can it burn you like battery acid? Keep reading to find out more...

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

Arsenic and Drinking Water

Arsenic is a naturally occurring element, but long-term exposure can cause cancer in people. There has been a substantial amount of research done to address arsenic in groundwater and drinking-water supplies around the country. The USGS studies local and national sources of arsenic to help health officials better manage our water resources.

Attribution: Water Resources
Date published: March 1, 2019
Status: Active

Environmental Management of Vector-borne Diseases

Effective management programs for vector-borne pathogens, such as West Nile Virus and the Lyme disease spirochete, are necessary to protect public health.  However, some vector control methods, such as landscape manipulations and pesticide applications, can also adversely affect nontarget species and environmentally sensitive natural systems.  Efficient targeting and integration of vector...

Date published: March 1, 2019
Status: Active

Coal-Tar-Based Pavement Sealcoat, PAHs, and Environmental Health

Sealcoat is the black, viscous liquid applied to many asphalt parking lots, driveways, and playgrounds in North America to protect and enhance the appearance of the underlying asphalt. Coal-tar-based pavement sealcoat is a potent source of polycyclic aromatic hydrocarbon (PAH) contamination in urban and suburban areas and a potential concern for human health and aquatic life.

Contacts: Barbara Mahler
Attribution: Water Resources
Date published: February 26, 2019
Status: Active

An Evaluation of the Toxicity of Potassium Chloride, Active Compound in the Molluscicide Potash, on Salmonid Fish and Their Forage Base

An Evaluation of the Toxicity of Potassium Chloride, Active Compound in the Molluscicide Potash, on Salmonid Fish and Their Forage Base

Date published: February 25, 2019
Status: Active

Hazard, Risk and Physiologically-based Pharmacokinetic Model for Anticoagulant Rodenticides in Kestrels and Owls

Rodents can consume and spoil crops, serve as disease vectors, and can devastate remote island ecosystems when introduced by anthropogenic activities.  Starting in to 20th century, rodenticides were developed and introduced for the control of these commensal species.  Regrettably, some rodenticides pose a significant hazard to target wildlife.

Date published: February 25, 2019
Status: Completed

Roadmap to Understanding Factors Influencing Mercury Exposure and Adverse Health Effects

In a comprehensive overview, scientists explain that human and wildlife exposure and toxicological responses to mercury are dependent on factors that operate across global, individual, and molecular scales. They provide a roadmap for unified research to facilitate a better understanding of human and wildlife health risks from mercury exposure.

Date published: February 25, 2019
Status: Completed

Pilot Study Provides Information on Contaminant Exposure from Tap Water at Residential and Workplace Sites in the United States

The U.S. Geological Survey (USGS), in collaboration with National Institutes of Health, U.S. Environmental Protection Agency, and academia, completed a pilot study to provide information on contaminant exposure from tap water at 26 locations including public and private supplies. Public-supply tap water generally met enforceable standards for those compounds with standards. Samples consisted...