SPA description
(information as published 2001)


image: SPA location map 


Grassholm is a small island which lies about 18 km west of the mainland coast of Pembrokeshire in south-west Wales. It is a rather low, flat-topped basalt island with limited terrestrial vegetation owing to the effects of large numbers of breeding seabirds, together with the influence of salt spray and wind exposure. Grassholm is of major importance as a breeding site for Gannet Morus bassanus. The seabirds feed outside the SPA in nearby waters, as well as more distantly elsewhere in the Irish Sea. 


Qualifying species

For individual species accounts visit the Species Accounts section

This site qualifies under Article 4.2 of the Directive (79/409/EEC) by supporting populations of European importance of the following migratory species:
During the breeding season;
Gannet Morus bassanus, 33,000 pairs representing at least 12.5% of the breeding North Atlantic population (Count as at 1994/5)



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