USGS Multimedia Gallery
Title: Biological Sampling Device - Insects Traps 2010
Description: A clear, conical trap collects emerging aquatic insects on Navigation Pool 8 of the Upper Mississippi River for a USGS study examining the effects of Asian carp on insect-eating birds.
Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.
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