What are the 7 levels of threat as described by IUCN?
It divides species into nine categories: Not Evaluated, Data Deficient, Least Concern, Near Threatened, Vulnerable, Endangered, Critically Endangered, Extinct in the Wild and Extinct.
How does IUCN Categorise threatened species?
In descending order of threat, the IUCN Red List threat categories are as follows: Extinct or Extinct in the Wild. Critically Endangered, Endangered and Vulnerable: species threatened with global extinction. Least Concern: species evaluated with a lower risk of extinction.
What are the 7 levels of classifications for endangered species?
The Red List has seven levels of conservation: least concern, near threatened, vulnerable, endangered, critically endangered, extinct in the wild, and extinct. Each category represents a different threat level.
How is the IUCN Red List used?
The IUCN Red List is used to inform decisions taken by Multilateral Environmental Agreements. It is often used as a guide to revise the annexes of some important international agreements, such as the Convention on International Trade in Endangered Species (CITES) and the Convention on Migratory Species (CMS).
What are the various categories of species classified by IUCN?
IUCN has classified species into categories of Extinct, Extinct in wild, Critically Endangered, Endangered, Vulnerable, etc based on data collected across the world.
What does IUCN 3.1 mean?
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. This second edition of the IUCN Red List Categories and Criteria: Version 3.1 retains the same assessment system presented in the first edition.
What are the categories of IUCN Red List?
2001 IUCN Red List Categories and Criteria (version 3.1)
- EXTINCT (EX) A taxon is Extinct when there is no reasonable doubt that the last individual has died.
- EXTINCT IN THE WILD (EW)
- CRITICALLY ENDANGERED (CR)
- ENDANGERED (EN)
- VULNERABLE (VU)
- NEAR THREATENED (NT)
- LEAST CONCERN (LC)
- DATA DEFICIENT (DD)
How many species are on the IUCN Red List?
138,300 species
Currently, there are more than 138,300 species on The IUCN Red List, with more than 38,500 species threatened with extinction, including 41% of amphibians, 37% of sharks and rays, 34% of conifers, 33% of reef building corals, 26% of mammals and 14% of birds.
How does the IUCN Red List Categories and classify species?
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.
What are the categories on the IUCN Red List?
The IUCN Red List Categories. The IUCN Red List Categories define the extinction risk of species assessed. Nine categories extend from NE ( Not Evaluated) to EX ( Extinct ). Critically Endangered (CR), Endangered (EN) and Vulnerable (VU) species are considered to be threatened with extinction.
Which is the most comprehensive List of Threatened Species?
IUCN Red List of Threatened Species. The IUCN Red List of Threatened Species™ is the world’s most comprehensive inventory of the global conservation status of plant and animal species. It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies.
Which is an example of a direct threat?
IUCN – CMP Unified Classification of Direct Threats Direct threats are the proximate human activities or processes that have impacted, are impacting, or may impact the the status of the taxon being assessed (e.g., unsustainable fishing or logging).
Which is the largest threatened species in Europe?
Gland, Switzerland, 10 December 2020 (IUCN) – The European bison (Bison bonasus), Europe’s largest land mammal, has moved from Vulnerable to Near Threatened thanks to continued conservation efforts, according to today’s update of the IUCN Red List of Threatened Species™.