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Contamination and pollution
Introduction of harmful substances into the environment by human action or natural processes.
Subtopics:
Nonpoint-source pollution (11 items)
Industrial pollution (25 items)
Pesticide and herbicide contamination (24 items)
Toxic radionuclide contamination (12 items)
Toxic trace element contamination (40 items)
Pharmaceutical contamination (3 items)

Water pollution (13 items)
Soil pollution (1 items)
Air pollution (7 items)
Related topics:
Results 161 - 170 of 182 listed by similarity [list alphabetically]
South Florida Restoration Science Forum [More info]
Discussions and posters about agriculture, ecology, hydrology, ecosystems, and resource management efforts in south Florida.
Southeast Ecological Science Center [More info]
Science center in Florida focusing on amphibians and reptiles, coastal ecology, contaminants and ecotoxicology, imperiled fish, manatees, and invasive species
Status and trends of biological resources [More info]
Description of the Status and Trends program, which monitors the abundance, distribution, productivity, and health of the Nation's living resources, detecting and evaluating changes in these variables over time.
Studies of polluted sediment offshore Los Angeles [More info]
Overview of studies of marine sediment on the continental shelf south of Los Angeles contaminated with DDT and PCBs from past sewage effluent discharges with links to research on Santa Monica Bay, Los Angeles Shelf and Palos Verdes Peninsula.
The Gulf of Mexico Hypoxic Zone [More info]
Information and links to USGS and other Federal agency monitoring and research concerning the hypoxic zone in the northern Gulf of Mexico occurring along the Louisiana-Texas coast.
The South Florida environment-- a region under stress [More info]
This report serves as an environmental review and framework for developing USGS programs in the south Florida ecosystem, especially the Everglades and its watershed, and stresses the critical role of water in natural and human environment.
The USGS role in Total Maximum Daily Load (TMDL) assessments [More info]
Detailed information on Total Maximum Daily Load, the total quantity of a pollutant that a stream can carry and still conform to water quality standards, used as a measurement in the monitoring, assessment, and remediation of polluted waters.
The Virtual Fish: Semipermeable Membrane Device (SPMD) basics [More info]
Paper by Duane Chapman for the 6th International SPMD Workshop and Symposium on a semipermeable membrane device (SPMD) measures contaminants in water by mimicking the parts of fish that cause concentration of specific chemicals in fish tissues.
PDF Tintina gold province study, Alaska and Yukon Territory, 2002-2007 [More info]
New discoveries and modernized extraction methods prompted renewed interest in gold deposits in this part of central Alaska, prompting a variety of studies described here.
PDF Toxicity and bioavailability of metals in the Missouri River adjacent to a lead refinery [More info]
Report (PDF format) on an evaluation of the potential environmental impacts of contaminated ground water from a metals refinery adjacent to the Missouri River in Omaha, Nebraska testing water and sediments for contaminants and toxicity.
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