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
Annex I habitats present as a qualifying feature, but not a primary reason for selection of this site
|4010 Northern Atlantic wet heaths with Erica tetralix|
|4030 European dry heaths|
|7150 Depressions on peat substrates of the Rhynchosporion|
|7230 Alkaline fens|
Annex II species that are a primary reason for selection of this site
|1044 Southern damselfly Coenagrion mercuriale|
|Representing southern damselfly Coenagrion mercuriale in west Wales, Preseli is one of the strongest populations in the UK, with numbers of adults estimated to be in the thousands and with a long history of records. Conditions on the site, created by its current management, appear to be optimal for this species.|
|1065 Marsh fritillary butterfly Euphydryas (Eurodryas, Hypodryas) aurinia|
|The 33 ha common of Waun Isaf within Preseli cSAC supports one of the largest populations of marsh fritillary Euphydryas aurinia in west Wales. The populations at Waun Isaf and the adjacent Gweunydd Blaencleddau cSAC together form the most important marsh fritillary metapopulation in Pembrokeshire.|
|1393 Slender green feather-moss Drepanocladus (Hamatocaulis) vernicosus|
|Preseli is representative of slender green feather-moss Drepanocladus vernicosus in south-west Wales. It grows here in upland flushes and seepages amidst wet heathland habitat.|
Annex II species present as a qualifying feature, but not a primary reason for site selection
Many designated sites are on private land: the listing of a site in these pages does not imply any right of public access.