The status and distribution of common cord-grass (Spartina anglica) at Dungarvan, co. Waterford, and an evaluation of ecological effects.
Common Cord-grass has been present at Dungarvan since about 1970. Surveys in 1989-1994 and 2018 showed that areas of 0.132 ha and 0.915 ha, respectively, of mudflat and salt marsh combined had been colonised by this invasive grass. Overall, the rate of expansion has been low at 0.028 ha, on average, per annum over 28 years. Between 1989-1994 and 2018 most expansion was on salt marsh rather than on mudflat. Currently, it is considered that Cord-grass does not pose a threat to either beds of Eel-grass or to mudflat-feeding birds, although this may change in the future should it expand at a faster rate and colonise currently unoccupied areas.