About IIAs

Glastonbury Tor © Joe Dunkley (CC BY-NC-SA 2.0)

 Important Invertebrate Areas  About IIAs Selecting and Mapping IIAs Supporting Invertebrate Conservation IIAs in Planning   IIA Landscapes  Single Species IIAs  Using IIA Maps and Profiles FAQ  IIA Data Providers   IIA Document Library 

Important Invertebrate Areas (IIAs) are the best places in Great Britain for our invertebrates, which have been identified using the most up-to-date data available from over 80 national expert recording schemes. They support some of our rarest and most threatened species, vulnerable habitats and unique assemblages of invertebrates.


Our IIA work aims is to make complex information on invertebrates understandable, useable, and readily accessible.  This will ensure that everyone is able to better understand key habitats and landscapes for invertebrates and help to make better decisions for their future whether they are members or the public, ecologists, planners, local authorities, statutory bodies, conservation organisations, land managers or other decision makers. 

IIAs are a vital tool that can direct and prioritise conservation efforts for invertebrates and ensure better decisions are made to help us restore nature.  However, it is important to remember that habitats outside of IIAs can still be home to rare and threatened invertebrates, including conservation priorities. 

These webpages will outline how the IIAs were identified and mapped as well as the decisions that have gone into selecting species. It will also explore some case studies of IIAs and how IIAs will be used to support and prioritise invertebrate conservation into the future.