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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 - Wikipedia
Data deficient. A data deficient ( DD) species is one which...
- IUCN Red List - Wikipedia
Website. www .iucnredlist .org. The International Union for...
- Category:IUCN Red List data deficient species - Wikipedia
IUCN Red List data deficient species (Chordata) IUCN Red...
- Lists of IUCN Red List endangered species - Wikipedia
Lists of IUCN Red List endangered species. On 29 January...
- Data deficient - Wikipedia
Data deficient. A data deficient ( DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily indicate that the species has not been extensively studied, but it usually ...
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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...
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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 .
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 mammals. List of data deficient molluscs. List of data deficient plants. List of data deficient reptiles.
Only groups containing at least 150 species are shown in Figure 2. Figure 2. The proportion of extant (i.e., excluding Extinct) species in The IUCN Red List of Threatened Species. Version 2023-1 assessed in each category for the more comprehensively assessed (i.e., at least 80% of the group has been assessed) groups containing ≥150 species.
Lists of IUCN Red List endangered species. On 29 January 2010, the IUCN Red List of Threatened Species identified 5220 (2754 animals, 1 fungus, 2464 plant, 1 protist) endangered species, subspecies and varieties, stocks and sub-populations.
