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IUCN Red List Category

Description
The IUCN Red List of Threatened Species provides taxonomic, conservation status and distribution information on plants, fungi and animals that have been globally evaluated using the IUCN Red List Categories and Criteria. This system is designed to determine the relative risk of extinction, and the main purpose of the IUCN Red List is to catalogue and highlight those plants and animals that are facing a higher risk of global extinction (i.e. those listed as Critically Endangered, Endangered and Vulnerable). The IUCN Red List also includes information on plants, fungi and animals that are categorized as Extinct or Extinct in the Wild; on taxa that cannot be evaluated because of insufficient information (i.e., are Data Deficient); and on plants, fungi and animals that are either close to meeting the threatened thresholds or that would be threatened were it not for an ongoing taxon-specific conservation programme (i.e., are Near Threatened).
Values
IconValueDescriptionSource
Least Concern Least ConcernA taxon is Least Concern when it has been evaluated against the criteria and does not qualify for Critically Endangered, Endangered, Vulnerable or Near Threatened. Widespread and abundant taxa are included in this category.IUCN Red List 2001
Near Threatened Near ThreatenedA taxon is Near Threatened when it has been evaluated against the criteria but does not qualify for Critically Endangered, Endangered or Vulnerable now, but is close to qualifying for or is likely to qualify for a threatened category in the near future.IUCN Red List 2001
Vulnerable VulnerableA taxon is Vulnerable when the best available evidence indicates that it considered to be facing a high risk of extinction in the wild.IUCN Red List 2001
Data Deficient Data DeficientA taxon is Data Deficient when there is inadequate information to make a direct, or indirect, assessment of its risk of extinction based on its distribution and/or population status. A taxon in this category may be well studied, and its biology well known, but appropriate data on abundance and/or distribution is lacking. Data Deficient is therefore not a category of threat or Lower Risk. Listing of taxa in this category indicates that more information is required and acknowledges the possibility that future research will show that threatened classification is appropriate.IUCN Red List 2001
Critically Endangered Critically EndangeredA taxon is Critically Endangered when it is facing an extremely high risk of extinction in the wild in the immediate future.IUCN Red List 2001
Endangered EndangeredA taxon is Endangered when it is not Critically Endangered but is facing a very high risk of extinction in the wild in the near future.IUCN Red List 2001
Lower Risk/Least Concern Lower Risk/Least ConcernA taxon is Lower Risk when it has been evaluated, does not satisfy the criteria for any of the categories Critically Endangered, Endangered or Vulnerable. Taxa included in the Lower Risk category can be separated into three subcategories: Conservation Dependent, Near Threatened and Least ConcernIUCN Red List 2001
Lower Risk/Near Threatened Lower Risk/Near ThreatenedA taxon is Lower Risk when it has been evaluated, does not satisfy the criteria for any of the categories Critically Endangered, Endangered or Vulnerable. Taxa included in the Lower Risk category can be separated into three subcategories: Conservation Dependent, Near Threatened and Least ConcernIUCN Red List 2001
Extinct in the Wild Extinct in the WildA taxon is Extinct in the wild when it is known only to survive in cultivation, in captivity or as a naturalised population (or populations) well outside the past range. A taxon is presumed extinct in the wild when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed to record an individual. Surveys should be over a time frame appropriate to the taxon's life cycle and life form.IUCN Red List 2001
Extinct ExtinctA taxon is Extinct when there is no reasonable doubt that the last individual has died.IUCN Red List 2001
Lower Risk/Conservation Dependent Lower Risk/Conservation DependentA taxon is Lower Risk when it has been evaluated, does not satisfy the criteria for any of the categories Critically Endangered, Endangered or Vulnerable. Taxa included in the Lower Risk category can be separated into three subcategories: Conservation Dependent, Near Threatened and Least ConcernIUCN Red List 2001
Trait Type
SINGLE CATEGORICAL
Data Type
STRING
Species Field
Demography and Conservation
Coverage
[Plantae, Animalia, Fungi]
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