USGS Scientific Investigations Report 2011-5082 - Occurrence and Distribution of Pesticides in Surface Waters of the Hood River Basin, Oregon, 1999

Scientific Investigations Report 2011-5082

Occurrence and Distribution of Pesticides in Surface Waters of the Hood River Basin, Oregon, 1999–2009

Figure 22. Detected pyraclostrobin concentrations in the Hood River basin, Oregon, compared to toxicity and sublethal endpoints for salmonids and their prey. LC₅₀, 50 percent lethal concentration; EC⁵⁰, 50 percent effective concentration.

First posted June 17, 2011

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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