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Special Areas of Conservation
Distribution of SACs/SCIs/cSACs containing species 4056 Anisus vorticulus.
||Explanation of Grades
||Outstanding examples of the feature in a European context.
||Excellent examples of the feature, significantly above the threshold for SSSI/ASSI notification but of somewhat lower value than grade A sites.
||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.
||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.