SSSI Guidelines - Chapter 20 - Terrestrial and Freshwater Invertebrates 2019
Guidelines for the Selection of biological SSSIs
Part 2: Detailed guidelines for habitats and species groups
The statutory nature conservation agencies have a duty under the Wildlife and Countryside Act 1981, as amended, to notify any area of land which in their opinion is 'of special interest by reason of any of its flora, fauna, or geological or physiographical features'. Such areas are known as Sites of Special Scientific Interest (SSSIs).
This Chapter covers species within the terrestrial and freshwater invertebrate groups, such as the spiders, snails, woodlice, millipedes, centipedes and crustaceans. Site selection for species and assemblages should be based on stable populations, however, as many threatened species are experiencing severe declines this approach should be used as a guideline only and there may be ample justification for the selection of species and assemblages in unfavourable condition.
Resource type Publication
Topic category Environment
Reference date 2019··
Curson, J., Howe, M., Webb, J., Heaver, D. & Tonhasca, A. 2019. Guidelines for the Selection of Biological SSSIs Part 2: Detailed Guidelines for Habitats and Species Groups. Chapter 20 Invertebrates. JNCC, Peterborough.
This chapter updates and replaces the Invertebrate, Butterfly and Dragonfly Chapters (17a 17b and 17c, 18 and 19) in the Guidelines for the Selection of Biological SSSIs (Nature Conservancy Council 1989).
Digital and Data Solutions, JNCC publisher
Limitations on public access None
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Metadata date 2019·06·25
Metadata point of contact
Digital and Data Solutions, JNCC