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FT #3 -
Restored tidal freshwater wetlands of the Anacostia River in
Washington DC
Leaders: Dick Hammerschlag (rhammerschlag@usgs.gov)
and Cairn Krafft (cairn_krafft@usgs.gov)
Trip departs at 12:15
PM from the circular drive at the rear entrance to the
Wardman Park Hotel
Anticipated return at 7:00 PM
Limited to 40 participants
The
urban Anacostia River is tidal for 13 km from Bladensburg,
Maryland to its confluence with the Potomac River in
Washington DC opposite Regan Airport. During the first
half of the 20th century, most of the approximately 810 ha
of freshwater tidal marshes were removed by mandated
dredging, filling, erosional scour, etc. Over the past
15 years, efforts to restore the Anacostia wetlands have
taken place through seven separate projects. For our
purposes, wetlands/marshlands are considered to encompass a
complex of open water, submersed wetlands, mud flats,
emergent wetlands, wet meadows, and swamp forest.
The tour is designed to visit five of the Anacostia's most
prominent freshwater tidal marsh reconstruction sites that
vary with respect to size, date of reconstruction, whether
reconstructed via filling or excavation to achieve target
elevations, whether located in a low-energy backwater of the
Anacostia mainstem, whether emergent wetlands have sustained
significant damage due to herbivory by resident Canada
geese, whether the sites were fenced, or whether impacted by
invasives, such as Phragmites and purple loosestrife,
etc. Ordinary field footwear will suffice.
Photos from Dick Hammerschlag and used with permission
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