Wildlife in a Changing World Factsheets
The IUCN Red List - a key conservation tool
What is The IUCN Red List of Threatened Species?
What information is included for each species?
How is The IUCN Red List compiled?
What species are included in The IUCN Red List?
|The IUCN Red List a key conservation tool factsheet EN||PDF Document 833KB|
|The IUCN Red List a key conservation tool factsheet FR||PDF Document 835KB|
|The IUCN Red List a key conservation tool factsheet SP||PDF Document 765KB|
State of the world's species
The variety of species existing today is a product of 3.5 billion years of evolution, involving radiation, speciation, extinction and, more recently, the impacts of people. Current estimates of the number of species range from 5 to 30 million, with a best working estimate of 8 to 14 million; of these, only around 1.8 million have been described.
|State of the world's species factsheet EN||PDF Document 783KB|
|State of the world's species factsheet FR||PDF Document 159KB|
|State of the world's species factsheet SP||PDF Document 3.29MB|
Freshwater biodiversity - a hidden resource under threat
The diversity of species in freshwater habitats is disproportionately high as compared to other ecosystems. Freshwater habitats cover less than 1% of the world’s surface, yet they provide a home for over 25% of all described vertebrates, more than 126,000 known animal species, and approximately 2,600 macrophyte plants.
|Freshwater biodiversity a hidden resource under threat factsheet EN||PDF Document 835KB|
|Freshwater biodiversity a hidden resource under threat factsheet FR||PDF Document 837KB|
|Freshwater biodiversity a hidden resource under threat factsheet SP||PDF Document 805KB|
Status of the world's marine species
The oceans are home to a large percentage of Earth’s biodiversity, occupying 70 percent of its surface and, when volume is considered, an even larger percentage of habitable space. However, there is growing concern that a broad range of marine species are under increased risk of extinction and that marine biodiversity is experiencing potentially irreversible loss due to a number of threats that include over-fi shing, bycatch, climate change, invasive species and coastal development.
|Status of the world's marine species factsheet EN||PDF Document 746KB|
|Status of the world's marine species factsheet FR||PDF Document 749KB|
|Status of the world's marine species factsheet SP||PDF Document 710KB|
Broadening the coverage of biodiversity assessments
To date, major conservation decisions and species-based indicators of biodiversity change have only included data on a restricted subset of species, and do not take into consideration the majority of biodiversity. A new approach has been developed that takes a large random sample of particular species groups – just as when forecasting election results, a poll of voters is taken.
|Broadening the coverage of biodiversity assessments factsheet EN||PDF Document 1.01MB|
|Broadening the coverage of biodiversity assessments factsheet FR||PDF Document 1016KB|
|Broadening the coverage of biodiversity assessments factsheet SP||PDF Document 978KB|
Species susceptibility to climate change impacts
There is growing evidence that climate change will become one of the major drivers of species extinctions in the 21st Century.
|Species susceptibility to climate change impacts factsheet EN||PDF Document 791KB|
|Species susceptibility to climate change impacts factsheet FR||PDF Document 187KB|
|Species susceptability to climate change impacts factsheet SP||PDF Document 3.58MB|
The Mediterranean: a biodiversity hotspot under threat
The Mediterranean basin is recognised as a biodiversity hotspot: its flora diversity is outstanding with 15,000 to 25,000 species, 60% of which are unique to the region. About one third of the Mediterranean fauna is endemic.
|The Mediterranean a biodiversity hotspot under threat factsheet EN||PDF Document 1.05MB|
|The Mediterranean a biodiversity hotspot under threat factsheet FR||PDF Document 1.06MB|
|The Mediterranean a biodiversity hotspot under threat factsheet SP||PDF Document 1.11MB|
Biodiversity indicators: what does species information tell us?
IUCN has access to many different kinds of information on species, ranging from the global assessments provided by The Red List of Threatened Species through to local case studies on particular species. The IUCN Species Survival Commission, together with the Species Programme and their partners have developed a number of species-based indicators, each of which uses a different approach to build up a picture of status and trends in species and biodiversity at global, regional and national scales.
|Biodiversity indicators what does species information tell us Factsheet EN||PDF Document 727KB|
|Biodiversity indicators what does species information tell us Factsheet FR||PDF Document 162KB|
|Biodiversity indicators what does species information tell us Factsheet SP||PDF Document 8.48MB|
The business case for the IUCN Red List of Threatened Species
The IUCN Red List is a tool for the private sector to effectively evaluate and address potential operational threats to biodiversity. The IUCN Red List can be used directly by the private sector in different stages of a project lifecycle. The IUCN Red List can be used to identify potential risks and opportunities early in the selection of an investment project. Once the project is defined and approved, the IUCN Red List can be used to develop biodiversity management and rehabilitation plans.
|The business case for The IUCN Red List of Threatened Species||PDF Document 309KB|