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Special Areas of Conservation

Distribution of SACs/SCIs/cSACs containing species 1014 Vertigo angustior.

Distribution of SACs/SCIs/cSACs containing species 1014 <I>Vertigo angustior</I>.
Explanation of Grades
A Outstanding examples of the feature in a European context.
B Excellent examples of the feature, significantly above the threshold for SSSI/ASSI notification but of somewhat lower value than grade A sites.
C Examples of the feature which are of at least national importance (i.e. usually above the threshold for SSSI/ASSI notification on terrestrial sites) but not significantly above this. These features are not the primary reason for SACs being selected.
D Features of below SSSI quality occurring on SACs These are non-qualifying features (“non-significant presence”), indicated by a letter D, but this is not a formal global grade.