Data deficient
| Conservation status |
|---|
| Extinct |
| Threatened |
| Lower Risk |
| Other categories |
| Related topics |
 Comparison of Red List classes above and NatureServe status below  |
A data deficient (DD)
distribution of the species. It can also indicate uncertainty about the taxonomic classification of an organism; for example, the IUCN classifies the orca as "data deficient" because of the likelihood that two or more types of the whale are separate species.[1]
The IUCN recommends that care be taken to avoid classing species as "data deficient" when the absence of records may indicate dangerously low abundance: "If the range of a taxon is suspected to be relatively circumscribed, if a considerable period of time has elapsed since the last record of the taxon, threatened status may well be justified"[2] (see also precautionary principle).
See also
- IUCN Red List data deficient species
- List of data deficient amphibians
- IUCN Red List data deficient species (Annelida)
- List of data deficient arthropods
- List of data deficient birds
- IUCN Red List data deficient species (Cnidaria)
- List of data deficient fishes
- List of data deficient insects
- List of data deficient invertebrates
- List of data deficient mammals
- List of data deficient molluscs
- List of data deficient plants
- List of data deficient reptiles
References
- . Retrieved 19 November 2021.
- ^ "The Categories", in IUCN (1983).
External links
- IUCN (2001). "2001 Categories & Criteria (version 3.1)". 2014 IUCN Red List. Retrieved 2014-08-26.
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