The Standards and Petitions Sub-Committee (SPSC) is responsible for ensuring the quality and standards of the IUCN Red List and for ruling on petitions against the listings of species on the IUCN Red List. The SPSC has developed, and regularly updates, the Guidelines for Using the IUCN Red List Categories and Criteria, which gives detailed and specific guidance on the correct use of the IUCN Red List Categories and Criteria. When disagreement about the listing of a particular species on the IUCN Red List leads to a formal petition, the Standards and Petitions Sub-Committee acts as the final judge and makes a binding ruling on the petition.
SPSC also gives advice on the interpretation of the Red List Criteria; responds to requests for scientific advice and guidance from the Red List Technical Working Group of the Red List Committee, the IUCN Species Programme and from Red List Partners; reviews Red List training materials and approaches; reviews proposed changes to the Guidelines for Application of IUCN Red List Criteria at Regional Levels; reviews all assessments made using only Criterion E; periodically reviews assessments made by Red List Authorities, Red List Partners and the IUCN Species Programme; and comments on specific assessments forwarded by the IUCN Species Programme.
Chair: Resit Akçakaya