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On 29 January 2010, the IUCN Red List of Threatened Species identified 6,702 (5,913 Animalia (1 Annelida, 1,328 Arthropoda, 3,814 Chordata, 149 Cnidaria, 617 Mollusca, 3 Nemertina, 1 Onychophora ), 780 Plantae, 9 Protista) data deficient species. Lists of data deficient species.
- Data deficient
IUCN Red List data deficient species. List of data deficient...
- IUCN Red List
Species are classified by the IUCN Red List into nine...
- List of data deficient plants
7.6% of all evaluated plant species are listed as data...
- Data deficient
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.
The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction. It divides species into nine categories: Not Evaluated, Data Deficient, Least Concern, Near Threatened, Vulnerable, Endangered, Critically Endangered, Extinct in the Wild and Extinct.
- Categories
- Versions
- Criticism
- See Also
- External Links
Species are classified by the IUCN Red List into nine groups, specified through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmentation. There is an emphasis on the acceptability of applying any criteria in the absence of high quality data including suspicion and po...
There have been a number of versions, dating from 1991, including: 1. Version 1.0 (1991) 2. Version 2.0 (1992) 3. Version 2.1 (1993) 4. Version 2.2 (1994) 5. Version 2.3 (1994) 6. Version 3.0 (1999) 7. Version 3.1 (2001) All new IUCN assessments since 2001 have used version 3.1 of the categories and criteria.
In 1997, the IUCN Red List received criticism on the grounds of secrecy (or at least poor documentation) surrounding the sources of its data. These allegations have led to efforts by the IUCN to improve its documentation and data quality, and to include peer reviews of taxa on the Red List.The list is also open to petitions against its classificati...
IUCN Red List on FacebookIUCN Red List on Twitter7.6% of all evaluated plant species are listed as data deficient. The IUCN also lists 18 subspecies and 57 varieties as data deficient. No subpopulations of plants have been evaluated by the IUCN. This is a complete list of data deficient plant species, subspecies and varieties evaluated by the IUCN.
IUCN Red List data deficient species (Annelida) List of data deficient arthropods; List of data deficient birds; IUCN Red List data deficient species (Chordata) 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 ...
Species are classified into one of nine Red List Categories: Extinct, Extinct in the Wild, Critically Endangered, Endangered, Vulnerable, Near Threatened, Least Concern, Data Deficient and Not Evaluated. Vulnerable, Endangered and Critically Endangered species are considered to be threatened with extinction.
