- The majority of pesticide contamination in U.S. national parks is due to regional pesticide use.
- The magnitude of pesticide deposition varies from year to year, but the geographic sources of it generally do not.
This research was supported by various agencies, including the National Institute of Environmental Health Sciences, the EPA, the National Park Service, USDA Forest Service, U.S. Geological Survey and others.
Collaborating researchers were from OSU; the University of Otago in New Zealand; University of Washington; U.S. Geological Survey; Western Ecology Division of the EPA; USDA Forest Service; and Environmental Radioactivity Research Centre in the United Kingdom.
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