Dyffryn Gwaun
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| Site of Special Scientific Interest | |
  Location within Wales | |
| Location | Pembrokeshire |
|---|---|
| Grid reference | SN0509634837 |
| Coordinates | 51°58′40″N 4°50′21″W / 51.977723°N 4.8392718°W |
| Interest | Biological |
| Area | 25.36 ha |
| Notification | 1954 |
Dyffryn Gwaun is a Site of Special Scientific Interest (SSSI) in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since January 1954 in an attempt to protect its fragile biological elements.[1] The site has an area of 25.36 hectares and is managed by Natural Resources Wales.[2]
This site is designated due to its biological qualities. SSSIs in Wales have been notified for a total of 142 different animal species and 191 different plant species.
This site has 3 special features.
- Woodland (semi-natural broadleaf)
- Marshy grassland
- Lichens typical of ancient woodland
The site has other habitats that contribute to the special wildlife interest including swamp and running water which support a wide range of species such as: otter, scarce flies and beetles.
