Contaminants
Contaminants
Environmental contaminants come from many human activities, including industry, energy production, agriculture, transportation, recreation, wastewater treatment, and urban horticulture. WARC researchers conduct risk assessments of contaminants, like heavy metals, methyl mercury, copper, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and organochlorine pesticides (such as DDT and DDE). Other contaminants of interest due to their impacts on wetland and aquatic ecosystems and species health include fragrances/musks, flame retardants, triclosan, personal-care products, and pharmaceuticals. WARC looks at the effects of these potentially damaging contaminants on wetland and aquatic plants and animals.
Filter Total Items: 16
Natural Resource Damage and Assessment (NRDA) Program-Louisiana’s Monitoring and Adaptive Management
The USGS is participating in the Louisiana-Trustee Implementation Group Monitoring and Adaptive Management work group to assess the injuries caused by the Deepwater Horizon oil spill and to select the appropriate restoration measures to compensate the public for the injury to coastal and marine resources.
Outlining Potential Health Effects of Exposure to Critical Elements: From Chemical Structure to Adverse Outcome Pathways
The Federal Government was charged with ensuring a reliable supply of critical minerals from within the U.S., and to further this policy in a safe and environmentally responsible manner by identifying new sources of critical elements. The objective of this research is to delineate anticipated adverse outcome pathways for the critical elements.
Detecting Sublethal Effects of Harmful Algal Blooms in Mammalian and Avian Cells
USGS Researchers are collaborating to study avian and mammalian cells to detect sublethal toxin effects following exposure to harmful algal blooms.
Interaction of Environmental Stressors and Batrachochytrium dendrobatidis (Bd) Pathogen Loads on Survival of Green Frogs (Lithobates clamitans)
The U.S. Geological Survey Amphibian Research Monitoring Initiative (ARMI) is using a combination of swabbing, non-lethal tissue sampling, soil and water sampling, and collection of a variety of other environmental variables to determine the relationships between the prevalence and pathogen load of Bd infection and environmental stressors on green treefrog survival.
Contaminants Assessment in the Coral Reefs of the Virgin Islands National Park and Virgin Islands Coral Reef National Monument
USGS collected samples at reef locations within the Virgin Islands National Park and analyzed for the presence of contaminants, organotin compounds, or sunscreen compounds.
Computer-Assisted Sperm Motion Analysis in Measuring Reproductive Effects in Bass
The objective of this research is to assess the sensitivity of female and male LMB reproductive capabilities at the time of year when they are physiologically preparing for spawning season (also known as gonad recrudescence).
Effect of Chronic Neonicotinoid Insecticide Exposure upon Monarch Development
The long-term viability of monarch butterfly ( Danaus plexippus ) populations in North America is in doubt.
Risk of Adult Mosquito Control Pesticides to Imperiled Butterflies
Mosquito control on Department of the Interior (DOI) managed lands is a resource management challenge. The pesticides used to control mosquitoes may also affect nontarget organisms whose conservation is one of the primary responsibilities of resource managers.
Detecting Differences in Bacterial Metabolism in the Buffalo National River
Each year, the Buffalo National River (BUFF) attracts 1.6 million visitors, many of whom enjoy recreational water activities. Since 2013, a confined animal feeding operation (CAFO) for swine has been operating on Big Creek, a BUFF tributary.
Monarch Butterfly Utilization of Milkweed Plants Grown in Close Proximity to Corn Treated by a Neonicotinoid Insecticide (Seed Treatment)
Monarch butterfly populations have declined sufficiently to result in noticeably fewer overwintering at sites in central Mexico as in California.
Baseline Aquatic Contamination and Endocrine Status in Resident Fish Populations of Biscayne National Park and in the Adjacent Coastal Environment
As part of the Comprehensive Everglades Restoration Plan, water managers are planning to use treated wastewater from the South District Wastewater Treatment Plant (WWTP) to supplement the canal waters that will be used to rehydrate wetlands adjacent to the Biscayne National Park (Park).
NRDA: Deepwater ROV Sampling to Assess Potential Impacts to Hardbottom Coral Communities and Associates from the Deepwater Horizon Oil Spill
The MC252 oil spill introduced hydrocarbons, dispersants, and drilling muds into the Gulf of Mexico, potentially adversely affecting the seafloor environment surrounding the spill site.