Scientific name Agrostis stolonifera – Triglochin maritimum saltmarsh
Common name Creeping Bent – Sea Arrowgrass saltmarsh
Community code SM6B

 

SM6B: Agrostis stolonifera – Triglochin maritimum saltmarsh   SM6B map: Agrostis stolonifera – Triglochin maritimum saltmarsh

Download full pdf synopsis: SM6B

 

Vegetation

This is a fairly distinctive community dominated by dense swards of Agrostis stolonifera. Other species are each only occasional at best, with the most likely scattered companions being Glaux maritima, Triglochin maritimum, Plantago maritima, Atriplex prostrata, Festuca rubra, Aster tripolium and Juncus gerardii.

 

Ecology

This is an upper saltmarsh community that is infrequently inundated. Conditions are base-rich.

 

Sub-communities

No sub-communities have been described for this community.

 

Similar communities

Nowhere else on the saltmarsh does Agrostis stolonifera tend to achieve such dominance.  Agrostis is also the main species of GL2A Agrostis stolonifera – Ranunculus repens marsh-grassland but that is a freshwater assemblage, so the halophytes found in the present community help to differentiate between the two categories.

 

Conservation value

Almost all examples of this vegetation qualify as EU HD Annex I habitat 1330 Atlantic salt meadows. It is typically a species-poor community but can support some specialist species.

 

Management

The main threat to this saltmarsh community is probably grazing by livestock. Sea-level rises as a result of climate change could potentially have an impact, particularly in areas susceptible to coastal squeeze.