Chesapeake Bay Introduced Species Database


Elymus repens

Common name(s):
Quackgrass
Image courtesy of Botany Section of the Department of Systematic Biology, Smithsonian Institution.

Economic Impacts

Impact:
Elymus repens (Quackgrass) is an aggressive weed in agricultural areas in the Chesapeake Bay watershed (Brown and Brown 1984), but it has no reported economic impacts in Chesapeake Bay proper.

References- Brown and Brown 1984


Economic Impacts Outside Chesapeake Bay

Impact:
Elymus repens (Quackgrass) is an aggressive weed in agricultural areas throughout northern North America (Hitchcock and Chase 1950; Dore and McNeill 1980). This grass is on official Noxious Weed lists in 11 states (Natural Resources Conservation Service 2002). It also occurs in seashore and tidal marsh habitats in northeastern North America (Fernald 1950), but economic impacts have not been reported from these environments.

References- Brown and Brown 1984; Dore and McNeill 1980; Hitchcock and Chase 1950; Natural Resources Conservation Service 2002


Ecological Impacts

Impacts on Natives:
Elymus repens (Quackgrass) is an aggressive weed in disturbed areas in the Chesapeake Bay watershed (Brown and Brown 1984), but it apparently has no reported impacts on native biota in Chesapeake Bay proper.

References- Brown and Brown 1984
Impacts on Non-natives:
Elymus repens (Quackgrass) is an aggressive weed in disturbed areas in the Chesapeake Bay watershed (Brown and Brown 1984), but it apparently has no reported impacts on exotic biota in Chesapeake Bay proper.

References- Brown and Brown 1984


This data was last modified on Wednesday, September 14th, 2005.
Databases Overview| Chesapeake Bay |