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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K7952-5

To measure nitrogen runoff in the Pacific northwest, plant physiologist Steve Griffith collects water samples from a monitor well inside the riparian zone near the Calapooya River.

Photo by Brian Prechtel.

640 pixels wide: (k7952-5.jpg)

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Last Modified: 5/23/2006
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