Gweunydd Blaencleddau


Gweunydd Blaencleddau is a large wetland complex in a shallow south-west valley around the headwaters of the Eastern Cleddau river. It is a Site of Special Scientific Interest and a Special Area of Conservation situated in Pembrokeshire, South Wales.

Site of Special Scientific Interest

Gweunydd Blaencleddau is situated at the head of the Eastern Cleddau river, south-west of Crymych and covers an area of of shallow south-west trending valley between 190 m and 275 m above sea-level. The site was designated an SSSI in 2000 for its biological qualities. It is a mixture of wet heath and damp grassland and has significant populations of the marsh fritillary and the southern damselfly.

Special Area of Conservation

A Special Area of Conservation has also been established around this north-eastern tributary of the Eastern Cleddau river. The site is designated for habitats including calcium-rich springwater-fed fens - Alkaline fens; the southern damselfly ; marsh fritillary butterfly Euphydryas aurinia; purple moor-grass meadows - molinia meadows on calcareous, peaty or clayey-silt-laden soils ; wet heathland with cross-leaved heath Rhostiroedd gwlyb - Northern Atlantic wet heaths with Erica tetralix; very wet mires often identified by an unstable 'quaking' surface - transition mires and quaking bogs; and blanket bogs.