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Botanist Dennis Whigham stands in a forested wetland with field gear.
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Dennis Whigham

 Dennis Whigham, Senior Botanist, Smithsonian Environmental Research Center ...
A landscape photo of a shoreline with tall grass-like plants lining the water's edge.
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Phragmites australis

 An invasive strain of the plant Phragmites australis dominates this Chesapeake Bay...