USGS Multimedia Gallery
Title: Wood Frog Embryos in an Icy Wetland
Wood frog embryos in a partly ice-covered Wisconsin wetland. Interconnected wetlands and uplands are critical elements of most North American landscapes and support our quality of life in profound ways. To provide much-needed information, the USGS is leading a growing network of U.S. and Canadian partners who are using satellite and ground-based sensors to monitor key variables at research sites in North America. The network is called the Terrestrial Wetland Global Change Research Network.
Photographer: Mark Roth , U.S. Geological Survey
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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