|Scientific name||Ammophila arenaria – Festuca rubra duneland|
|Common name||Marram – Red Fescue duneland|
Download full pdf synopsis: DU2A
Tall tussocks of Ammophila arenaria are the striking feature of this duneland community, but Festuca rubra is usually co-dominant. Amongst the dune grasses, Galium verum with its tiny yellow flowers is a constant and can form reasonable patches. Frequently found are Lotus corniculatus, Plantago lanceolata, Senecio jacobaea, Taraxacum officinale agg. and Trifolium repens.
This assemblage mainly represents a transition between marram dune and fixed dune vegetation, occurring on sands which are still somewhat mobile. Also included here are rank, ungrazed fixed dune swards with Arrhenatherum elatius, Holcus lanatus or Dactylis glomerata.
No sub-communities are described.
Ammophila arenaria can also be abundant in the DU1B Ammophila arenaria duneland, but there Festuca rubra is far less abundant and fixed dune species are scarce.
Vegetation from semi-fixed dunes typically corresponds to EU HD Annex I priority habitat *2130 Fixed dunes (grey dunes) but where cover of Festuca rubra and other fixed dune species is lower and the cover of bare sand is higher, it corresponds to habitat 2120 Marram dunes (white dunes). Examples of rank dune swards are likely to represent habitat *2130.
Semi-fixed dunes are unstable habitats and part of the dynamic duneland system. They may be naturally removed by storms and high tides. Anthropogenic impacts include recreation and modification of the coastline. Rank dune swards develop in areas of fixed dune due to undergrazing or abandonment.