Archived: AZE (Alliance for Zero Extinction): consultation on updated data set

Please note that this 1st phase of the 2017 AZE consultation has now closed. Many thanks to everyone who contributed during July and August. The 2nd phase of the consultation, focusing on the spatial boundaries of the sites, is taking place on a different platform. Please follow this link to access it, and provide feedback using the links to Survey Monkey by the deadline of 12 November. Many thanks.


The Alliance for Zero Extinction ( is a global initiative of biodiversity conservation organisations aiming to prevent extinctions by identifying and safeguarding key sites where species are in imminent danger of disappearing. Sites qualifying for AZE status must meet all three of these criteria:

  • Endangerment: An AZE site must contain at least one globally Endangered (EN) or Critically Endangered (CR) species, as listed on the IUCN Red List.
  • Irreplaceability:An AZE site should only be designated if it is the sole area where an EN or CR species occurs, contains the overwhelmingly significant known resident population (>95%) of the EN or CR species, or contains the overwhelmingly significant known population (>95%) for one life history segment (e.g. breeding or wintering) of the EN or CR species.
  • Discreteness: The area must have a definable boundary within which the character of habitats, biological communities, and/or management issues have more in common with each other than they do with those in adjacent areas.

All confirmed AZE sites are also Key Biodiversity Areas (KBAs), under the global standard agreed in 2016 (see this link), and especially in relation to KBA criterion A1e (i.e. sites that effectively hold the entire global population of a CR or EN species).

Since late 2015, a team comprising BirdLife International, the International Union for Conservation of Nature (IUCN) and the American Bird Conservancy (ABC) has been reviewing, updating and expanding the AZE data set. This is as part of a 3-year project funded by the Global Environment Facility (GEF: and implemented by the United Nations Environment Programme (UNEP). We are now sharing the draft results of this update for wider expert consultation, and welcome comments and feedback.

Since it was first launched in 2005 and updated in 2010, the AZE data set has become increasingly out of date, owing to changes in taxonomy, IUCN Red List assessments, knowledge of the distributions and populations of species, and genuine changes. The current major update focuses on the following taxonomic groups, all of which had been comprehensively assessed (i.e. all species they comprise had been assessed) for the IUCN Red List by the end of 2016: amphibians, birds, cacti, cone snails, conifers, corals, cycads, freshwater crabs, freshwater crayfish, freshwater shrimps, mammals, mangrove plants (no proposed AZE sites), selected marine fish (blennies, groupers, pufferfish, wrasses), selected reptiles (chameleons, crocodiles, iguanas, tortoises, turtles), sharks and rays; plus selected birches (close to being comprehensively assessed).

All of the potential AZE trigger species in each group, and the sites to which they are restricted, are included in downloadable spreadsheets (follow the above links), coded by country and region. The location of each site can also be visualised using a dynamic web mapping interface (AZE Review 2017: This interactive tool shows the different groups assessed and allows selection by species or country. More detailed information on other functions available can be found under the information button (i) on the site.

To ensure these data are as robust as possible, we kindly request your help to review them and provide us with feedback. Please make any comments or suggestions directly as contributions to the relevant topic on the Forum website – this is the preferred way to manage discussions, and means that other users can respond to issues raised. However, we realise that many of you may have comments on a multitude of species and sites, and so if you would like to communicate several comments in a single e-mail, you may do that instead – please email or, who will then attempt to post your feedback on the relevant topics, as appropriate.

This consultation will remain open until 31 July 2017. In early August, we will review the feedback received and finalise the list of AZE trigger species and sites. We will then use them to delineate new or refined boundaries for all AZE sites. In mid-August, we will post these proposed spatial AZE data for review (with a link to a separate map viewer interface), and again invite feedback from relevant experts and in particular from local stakeholders. Further instructions on the spatial data review will be posted when those data are available. In mid-September, we will review the feedback received and finalise the spatial data set by the end of September. By the end of 2017, the updated data sets will be made available via both the new AZE website (managed by ABC) and the World Database on KBAs (, managed by BirdLife on behalf of the KBA Partnership). All contributors who supply information that is used will be explicitly acknowledged on the updated AZE website.

We acknowledge that this timescale is rather tight, and apologise in advance to anyone who is unable to contribute in the time available. However, unlike the three AZE updates to date (2005, 2010 and 2017), the resulting list will not be set in stone for years once this phase is over. Another deliverable of the current project is to facilitate AZE site identification for species groups that have not yet been comprehensively assessed for the IUCN Red List, by providing an online nomination template that anyone can complete, following the documentation standards required for all KBAs. This will be made available during 2018.

Many thanks in advance

BirdLife, IUCN and ABC

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6 Responses to Archived: AZE (Alliance for Zero Extinction): consultation on updated data set

  1. Please can I suggest the Kwabre Forest in Ghana is considered. It is situated in the Western Region of Ghana, directly opposite the Tanoe Forest in Cote d’Ivoire which is listed in the database already. The Kwabre like the Tanoe Forest is considered habitat range for Miss Waldron’s Colobus, Piliocolobus waldroni. In addition the Kwabre Forest has the populations of white naped mangabeys, Cercocebus lunulatus and the Roloway monkey, Cercopithecus Roloway in Ghana.

    • Janet Scott (IUCN) says:

      Many thanks for your comment regarding the Kwabre Forest. According to the Red List assessment, although this area is part of the habitat range for Piliocolobus waldronae, the species is thought to be extinct or near extinct there, with the best chance of a surviving population being in the Tanoe Forest. Is this correct / up to date? Following the discreteness and irreplaceability criteria, unless it is is possible to consider the two forest areas (Kwabre and Tanoe) to be one site spanning two countries, then there are three possible scenarios:
      1. If the site with the best chance of a surviving population / containing at least 95% of the population is Tanoe Forest, then that can qualify as an AZE site and Kwabre cannot.
      2. If the site with the best chance of a surviving population / containing at least 95% of the population is Kwabre Forest, then that can qualify as an AZE site and Tanoe cannot.
      3. If the sites have equal chances of a surviving population / are both likely to contain a significant proportion of the population, then neither site can qualify.
      Assuming it is still correct that the other two species – Cercocebus lunulatus and Cercopithecus roloway – are not restricted to a single site and therefore do not qualify as AZE trigger species.

  2. Janet Scott (IUCN) says:

    Comment from Tarun Nair via email:
    Just a quick comment. With reference to Site Name: National Chambal River Gharial Sanctuary (Country: India / MapID: IND13), please note that the official name for this site is National Chambal Sanctuary.

  3. David Mallon says:

    1130 AZE_NEW_194. Termit-Tintoumma NNR in Niger. I doubt that this site now qualifies under the Irreplaceability or Discreteness criteria. 1. The population of the proposed trigger species (Addax nasomaculatus) has been severely reduced and is either near-destroyed or dispersed. Current population size is unknown, but may be as low as 10-30. The species also occurs at 2 sites in Chad, so the proposed site cannot be said to hold 95% of the population. 2. The site (a national nature reserve) covers 98,000 square kilometres. It is situated in open desert and the species can move (and is believed to move) distances of several hundreds of kilometres outside: there is no clear natural boundary between the site and the surrounding landscape.

    • Janet Scott (IUCN) says:

      Many thanks for your comment on Termit-Tintoumma. Based on this information I agree that the site does not qualify as an AZE.

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