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Aerial View of SPRUCE Project Site (Nov 2014)

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SPRUCE research is being conducted on an 8.1 hectare peatland of the Marcell Experimental Forest in northern Minnesota. Ten open-topped aboveground enclosures are being built on this site to simulate various levels of warming and CO2 exposure. The remote landscape includes a mix of uplands, bogs, fens, lakes, and streams. More images available at

Credit or Source: Office of Biological and Environmental Research of the U.S. Department of Energy Office of Science.


U.S. DOE. July 2015. Spruce and Peatland Responses Under Climatic and Environmental Change. U.S. Department of Energy Office of Science. (PDF)

Prepared by the Biological and Environmental Research Information System, Oak Ridge National Laboratory, and