Invasive Phragmites reeds encroach on a boardwalk in a Maryland marsh. On this marsh, biologists at the Smithsonian Environmental Research Center have been conducting climate change experiments for more than 30 years.
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Invasive Phragmites reeds encroach on a boardwalk in a Maryland marsh. On this marsh, biologists at the Smithsonian Environmental Research Center have been conducting climate change experiments for more than 30 years.