Resultado da Busca
Browse the list of species by conservation status, from critically endangered to vulnerable. Find out more about the work WWF is doing to protect endangered species and their habitats.
- Common Name
WWF is committed to saving endangered species. Learn more...
- Tiger
About 4,500 tigers remain in the wild, but much more work is...
- Javan Rhino
Javan rhinos are the most threatened of the five rhino...
- Scientific Name
WWF is committed to saving endangered species. Learn more...
- Monarch Butterfly
Protect endangered species, including the monarch butterfly,...
- Sri Lankan Elephant
The Sri Lankan subspecies is the largest and also the...
- Whale
Unfortunately, their large size and mythical aura does not...
- Bornean Elephant
The smallest Asian elephant subspecies, Bornean elephants...
- Common Name
The IUCN Red List is the world's most comprehensive source of information on the extinction risk of animal, fungi and plant species. It classifies species into nine categories, from Not Evaluated to Extinct, and provides data and news on biodiversity conservation.
The IUCN Red List is the world’s most comprehensive information source on the extinction risk status of animal, fungus and plant species. It provides data, trends, categories and metrics to inform conservation action and policy.
The Red List Index (RLI) shows how the overall extinction risk for species is changing over time, based on repeated assessments by IUCN and its Partners. The RLI is used to monitor progress towards biodiversity targets and goals, and can be disaggregated by thematic, regional and national levels.
- A Dynamic Red List: Reasons For Changing Status
- Non-Genuine Reasons
- Genuine Reasons
- An Expanding Red List: Knowledge Gaps and Fully Assessed Groups
- How Many Species Are Threatened?
- Tables 1 & 2: Threatened Species in Past and Present IUCN Red Lists
- Tables 3 & 4: Summaries by Taxonomic Group
- Tables 5 & 6: Summaries by Country
- Table 7: Species Changing Red List Category
- Table 8: Endemic Species by Country
- GeneratedCaptionsTabForHeroSec
In order to monitor the changing status of biodiversity, it is essential to reassess species periodically. This reassessment may result in species moving into a different Red List Category for non-genuine or genuine reasons:
New information has become available since the last assessment (e.g., more recent data are available on population sizes, threatening processes, rates of decline or recovery, etc.).There has been a taxonomic revision resulting in the species no longer being the same concept as it was before (e.g., it is now split into several species each with smaller ranges, population sizes...An error has been discovered in the previous assessment (e.g., the wrong information was used; the IUCN Red List Categories and Criteria were applied incorrectly; etc.).The previous assessment used an older version of the IUCN Red List Categories and Criteria and the reassessment uses the current criteria which have slightly different thresholds.The main threats are no longer present, or conservation measures (e.g., reintroduction, habitat protection or restoration, legal protection, harvest management, etc.) have successfully improved the...The main threats have continued unabated, have increased, or new threats have developed causing the status of the species to deteriorate enough to move it into a higher category of threat.In addition to species changing status, The IUCN Red List grows larger with each update as newly described species and species from the less well-known groups are assessed for the first time (Figure 1). IUCN and its partners are working to expand the number of taxonomic groups that have full and complete Red List assessments in order to improve our...
Species assessed as Critically Endangered (CR), Endangered (EN), or Vulnerable (VU) are referred to as "threatened" species. However, Extinct in the Wild (EW) species can move into the threatened categories following successful reintroduction. Therefore, EW species should be included when reporting proportions of threatened species. Reporting the p...
Tables 1 and 2 are organized by taxonomic group and show numbers of threatened species listed in the current version of The IUCN Red List in relation to the estimated number of described species (Table 1a), and numbers of threatened species in each version of The IUCN Red List since 1996 (Tables 1b and 2). These tables highlight the disparity betwe...
Tables 3 and 4 are organized by taxonomic group. These should be used to see, for example, the numbers of globally threatened mammals, birds and amphibians (Table 4 is an expanded version of Table 3). These tables include number of species tagged as 'Possibly Extinct' (CR(PE)) and 'Possibly Extinct in the Wild' (CR(PEW)). These figures are included...
Tables 5 and 6 are organized by country. These should be used to see, for example, number of globally threatened mammals or the numbers of Critically Endangered species occurring within a specific country. The figures presented in Tables 5 and 6 include only certain distributions, reintroduced species and regionally extinct species (i.e., the figur...
Table 7 is organized by taxonomic group. This table should be used to check which species have changed Red List status since the previous Red List update and the main reason for the status change. Table 7 is provided here for the current Red List and for previous Red Lists (dating back to 2007). Important Note: Table 7 is provided only to summarize...
Table 8 is similar to the country tables (Tables 5 and 6), but focus on endemic species only (i.e., species occurring naturally within one country only). This table only presents figures for the comprehensively assessed species groups (i.e., where >80% of the species in the group have been assessed). Note that the Advanced Searchpage includes a fil...
Learn how many species are listed in each Red List Category, by taxonomic group and by country, and why they change over time. Find out the reasons for changing status, the data gaps and the best estimates of threatened species proportions.
Species list. See also. References. External links. The world's 100 most threatened species. Silky sifaka ( Propithecus candidus ), fewer than 1,000 still alive. The World's 100 most threatened species [1] is a compilation of the most threatened animals, plants, and fungi in the world.
To learn more about why some species are endangered, and to read the shortened list, please visit Endangered Species on the WWF website. You can view a list of animals and plants that fall mainly within the two most serious categories of threat: critically endangered and endangered.
