Red List assessment process
Assessments that are to be integrated into the global IUCN Red List of Threatened Species can come from coordinated efforts within the IUCN network e.g. IUCN Species Survival Commission Specialist Groups or from other processes such as the development of national Red Lists, if there are species that are being assessed that are endemic to that country. National Red Listing processes may differ from those prescribed by IUCN, but ANY assessment to be submitted to the global IUCN Red List of Threatened Species will have to go throught the following stages:
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Assessment - Assessors are experts who have sufficient knowledge of a taxon to be able to apply the criteria in an informed way, these experts can come from within the IUCN network such as the IUCN Species Survival Commission Specialist Groups or from national or regional taxonomic experts.
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Review - Reviewers of global assessments are generally from the network of Red List Authorities (RLAs), which are mostly IUCN Specialist Groups, but where there are gaps, other organisations act as RLAs (e.g., Project Seahorse, BirdLife International, etc) and agree that they are appropriate based on all data currently available for the species. Assessments coming to the IUCN Red List Unit from within IUCN should already have been through the review process (the RLAs nest within the SGs). Assessments coming from outside the IUCN network need to go through the peer review process.