Degradation Description
Freshwater run-off from residential areas and other surrounding uplands is entering the marsh and promoting the expansion of the invasive weed Phragmites australis (common reed). This plant does not tolerate full-strength seawater, but has the ability to tolerate moderate salinity concentrations. Phragmites tends to expand at the rate or 3%/year in tidal areas that are diluted with excessive freshwater.