Species

SSSI features for species can be notified if they qualify under criteria outlined in the species sections (Part C, chapters 11-19) of the Guidelines for Selection of Biological SSSIs.  In Northern Ireland, ASSIs are selected on a very similar basis - the Guidelines for the selection of Biological ASSIs in Northern Ireland  is an addendum to the SSSI guidelines rather than an alternative.  Special Areas of Conservation (SACs) can be designated for the UK species listed on Annex II of the EC Habitats Directive.
 

Mammals

Birds

Herpetofauna

Fish

Invertebrates

Plants