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Special Areas of Conservation

Llwyn

Designated Special Area of Conservation (SAC)
Country Wales
Unitary Authority West Wales and The Valleys
Centroid* SJ083642
Latitude 53.16694444
Longitude -3.371111111
SAC EU Code UK0030185
Status Designated Special Area of Conservation (SAC)
Area (ha) 21.97
* This is the approximate central point of the SAC. In the case of large, linear or composite sites, this may not represent the location where a feature occurs within the SAC.
Location of Llwyn SAC

General site character

  • Bogs, Marshes, Water fringed vegetation, Fens (1.8%)
  • Humid grassland, Mesophile grassland (13.2%)
  • Broad-leaved deciduous woodland (80.9%)
  • Other land (including Towns, Villages, Roads, Waste places, Mines, Industrial sites) (4.1%)

Download the Natura 2000 standard data form for this site as submitted to Europe (PDF <100kb)

Note When undertaking an appropriate assessment of impacts at a site, all features of European importance (both primary and non-primary) need to be considered.

Annex I habitats that are a primary reason for selection of this site

  • Llwyn is one of the largest examples of alluvial forest in Wales. The woodland has formed on level ground on the floodplain of the River Clywedog, and has a canopy of alder Alnus glutinosa, with transitions to ash Fraxinus excelsior dominance on relatively drier ground. The structure is mature, with massive trees, abundant dead wood, and a rich understorey including abundant bird cherry Prunus padus and guelder rose Viburnum opulus, and occasional buckthorn Rhamnus cathartica and alder buckthorn Frangula alnus. The ground flora is diverse, including both wet woodland species, such as yellow iris Iris pseudacorus and remote sedge Carex remota, and those characteristic of drier ash-maple woodlands, such as ground-ivy Glechoma hederacea and moschatel Adoxa moschatellina. Although one of the largest examples of this woodland type in Wales, the total area is only modest, and the site is constrained by agricultural land and lack of natural dynamic disturbance.

Annex I habitats present as a qualifying feature, but not a primary reason for selection of this site

  • Not Applicable

Annex II species that are a primary reason for selection of this site

  • Not Applicable

Annex II species present as a qualifying feature, but not a primary reason for site selection

  • Not Applicable

Many designated sites are on private land: the listing of a site in these pages does not imply any right of public access.