Not evaluated

Source: Wikipedia, the free encyclopedia.
Conservation status
Bufo periglenes, the Golden Toad, was last recorded on May 15, 1989
Lower Risk

Other categories

Related topics

IUCN Red List category abbreviations (version 3.1, 2001)
Comparison of Red List classes above
and NatureServe status below
NatureServe category abbreviations

A not evaluated (NE) species is one which has been categorized under the IUCN Red List of threatened species as not yet having been assessed by the International Union for Conservation of Nature.[1][2]

This conservation category is one of nine IUCN threat assessment categories for species to indicate their risk of global extinction. The categories range from 'extinct' (EX) at one end of the spectrum, to 'least concern' (LC) at the other. The categories 'data deficient' and 'not evaluated' (NE) are not on the spectrum, because they indicate species that have not been reviewed enough to assign to a category.[3]

The category of 'not evaluated' does not indicate that a species is not at risk of extinction, but simply that the species has not yet been studied for any risk to be quantified and published. The IUCN advises that species categorised as 'not evaluated' "...should not be treated as if they were non-threatened. It may be appropriate ... to give them the same degree of attention as threatened taxa, at least until their status can be assessed."[3]: 7 [4]: 76 

By 2015, the IUCN had assessed and allocated conservation statuses to over 76,000 species worldwide. From these it had categorised some 24,000 species as globally threatened at one conservation level or another. However, despite estimates varying widely as to the number of species existing on Earth (ranging from 3 million up to 30 million), this means the IUCN's 'not evaluated' (NE) category is by far the largest of all nine extinction risk categories.[5]

Other applications

The global IUCN assessment and categorization process has subsequently been applied at country and sometimes at regional levels as the basis for assessing conservation threats and for establishing individual Red Data lists for those areas.[6][7][8][9][10][11]

Assessment criteria have also begun to be applied as a way of

not evaluated' prior to the start of the assessment process.[12]

See also

Notes and references

  1. ^ "About the IUCN Red List". Archived from the original on 2014-09-21. Retrieved 2016-02-19.
  2. from the original on 9 February 2023. Retrieved 24 July 2018.
  3. ^
    ISBN 978-2-8317-1435-6. Archived (PDF) from the original on 2018-12-24. Retrieved 2018-07-24.{{cite book}}: CS1 maint: location missing publisher (link
  4. ^ "Guidelines for Using the IUCN Red List Categories and Criteria. Version 13" (PDF). IUCN Standards and Petitions Subcommittee. 2017. Archived from the original (PDF) on 23 April 2018. Retrieved 24 July 2018.
  5. ^ "Wildlife Conservation Resource" (PDF). Marwell Zoo. Archived from the original (PDF) on 24 July 2018. Retrieved 23 July 2018.
  6. S2CID 27086108
  7. ^ "Threatened Species Programme | SANBI Red List of South African Plants". Archived from the original on 2017-08-02. Retrieved 2018-07-24.
  8. ^ Government, Northern Territory (2017-07-24). "Classification of wildlife". Archived from the original on 2018-07-24. Retrieved 2018-07-24.
  9. ^ "The National Red List 2012 of Sri Lanka Conservation Status of the Fauna and Flora" (PDF). Ministry of Environment, Colombo, Sri Lanka. 2012. Archived (PDF) from the original on 13 July 2018. Retrieved 24 July 2018.
  10. from the original on 2018-07-24. Retrieved 2018-07-24.
  11. ISSN 1993-3800. Archived from the original on 2018-07-24. Retrieved 2018-07-24.{{cite journal}}: CS1 maint: multiple names: authors list (link
  12. PMID 25561664. Archived from the original
    (PDF) on 24 July 2018. Retrieved 24 July 2018.