Scientific name Festuca rubra – Thymus polytrichus duneland
Common name Red Fescue – Wild Thyme duneland
Community code DU2D

 

DU2D: Festuca rubra – Thymus polytrichus duneland  DU2D: Festuca rubra – Thymus polytrichus duneland  DU2D map: Festuca rubra – Thymus polytrichus duneland

Download full pdf synopsis: DU2D

 

Vegetation

This is a dune grassland community in which the main constituents are Festuca rubra, Thymus polytrichus and Galium verum. Other constant herbaceous species are Trifolium repens, Lotus corniculatus, Plantago lanceolata, Luzula campestris and Bellis perennis. In addition to Thymus, with its delicate pink-purple flowers, several calcicole turf species may be encountered here, including Linum catharticum, Euphrasia officinalis agg., Carex flacca, Ranunculus bulbosus, Koeleria macrantha and Campanula rotundifolia. Tussocks of Ammophila arenaria are frequent. A typically modest moss layer occurs composed of Rhytidiadelphus squarrosus and Homalothecium lutescens.

Ecology

This community represents a variant of dune grassland found on fixed dunes and machair plains, occurring on sandy soils which have developed some mor-humus.

 

Sub-communities

No sub-communities are described.

 

Similar communities

The suite of calcicole species, particularly Thymus polytrichus, separate this DU2D assemblage from the other dune grassland communities. In the calcareous swards of the GL3A Briza media – Thymus polytrichus grassland, several different grasses are found, notably Briza media, Anthoxanthum odoratum and Sesleria caerulea, but psammophilic species, such as Ammophila arenaria and Carex arenaria, are lacking.

Conservation value

Most examples of this vegetation correspond to EU HD Annex I habitat *2130 Fixed dunes (grey dunes). On the northwest coast, this assemblage can be a component of priority habitat *21A0 Machair.

 

Management

This dune grassland is often grazed by livestock and rabbits, and overgrazing or undergrazing can be a problem, as can disturbance due to recreational activities in popular coastal areas.