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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number D233-3

Oregon State University faculty research assistant entomologist William Gavin examines aquatic invertebrates captured in an annual field drainage channel. These seasonal drainages provide some of the diet to native fish during the winter and spring.

Photo by Peggy Greb.

640 pixels wide: (d233-3.jpg)

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Last Modified: 5/23/2006
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