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Vulnerable (VU) species are considered to be facing a high risk of extinction in the wild. In September 2016, the International Union for Conservation of Nature (IUCN) listed 529 vulnerable mammalian species. [1] Of all evaluated mammalian species, 9.6% are listed as vulnerable. The IUCN also lists 53 mammalian subspecies as vulnerable.
D) Population very small or restricted in the form of either of the following: Population estimated to number less than 1,000 mature individuals. Population is characterised by an acute restriction in its area of occupancy (typically less than 20 km 2 ) [ 2 ] or in the number of locations (typically less than five).
On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 (4618 Animalia, 5075 Plantae, 1 Protista) Vulnerable species, subspecies and varieties, stocks and sub-populations.
The IUCN Red List of Threatened Species by the International Union for Conservation of Nature is the best known worldwide conservation status listing and ranking system. . Species are classified by the IUCN Red List into nine groups set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmenta
The report's co-author, Ellen Butcher, stated one of the guiding principles of the list, "If we take immediate action we can give them a fighting chance for survival. But this requires society to support the moral and ethical position that all species have an inherent right to exist."
A threatened species is any species (including animals, plants and fungi) which is vulnerable to extinction in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of critical depensation, a mathematical measure of biomass related to population growth rate. This quantitative metric is one ...
The basis of the IUCN Red List of Ecosystems are the IUCN Red List of Ecosystems Categories and Criteria, a set of eight categories and five criteria that provide a consistent method for assessing an ecosystem's risk of collapse. They are designed to be: broadly applicable across type ecosystems and geographic areas, transparent and ...
Please stick to IUCN Red List when you add or remove species, subspecies, varieties, stocks or sub-populations. Binomial and trinomial nomenclature should be used, no more. To get more clarity, surname of scientific authority should be ignored.