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
Annex II species that are a primary reason for selection of this site
|1106 Atlantic salmon Salmo salar|
|The Grimersta river and loch system represents a high-quality salmon Salmo salar population in the Western Isles. The system has a high proportion of lacustrine rearing area for salmon, in contrast to their more usual preference for riverine conditions. These unusual habitat conditions are found elsewhere in the Atlantic salmon’s range in Newfoundland and in parts of Iceland. Whilst there is considerable habitat diversity in the Grimersta, its overall productivity is limited by the oligotrophic conditions which are found throughout the system. Although a high proportion of the catchment is accessible to salmon, Grimersta’s comparatively small size in relation to those on the mainland means that it only supports a small proportion of the Scottish salmon population, but it is the best salmon system in the Western Isles.|
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.