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A wilderness area (IUCN Category Ib) is similar to a strict nature reserve, but generally larger and protected in a slightly less stringent manner.. These areas are a protected domain in which biodiversity and ecosystem processes (including evolution) are allowed to flourish or experience restoration if previously disturbed by human activity.
The IUCN also lists 244 subspecies and 235 varieties as Vulnerable. No subpopulations of plants have been evaluated by the IUCN. For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild".
The IUCN protected area categories are: IUCN Category Ia — Strict Nature Reserve; IUCN Category Ib — Wilderness Area; IUCN Category II — National Park; IUCN Category III — Natural Monument or Natural Feature; IUCN Category IV — Habitat management area / Species Management Area; IUCN Category V — Protected Landscape / Protected Seascape
The WDPA uses the IUCN's definition of a protected area as the main criteria for entries to be included in the database. The database contains comprehensive information on the different types of protected areas ranging from those strictly protected for conservation purposes to those where sustainable use of natural resources is allowed; and includes government, co-managed, private and ...
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 ...
Version 2014.2 of the IUCN Red List of Threatened Species identified 4574 critically endangered species, subspecies, varieties, stocks, and subpopulations. For IUCN lists of critically endangered species by kingdom , see:
The IUCN — International Union for Conservation of Nature. International environmental and conservation organization — focus on environmental conservation . The main article for this category is International Union for Conservation of Nature .
As of December 2023, the International Union for Conservation of Nature (IUCN) lists 5702 plant species categorized as Critically Endangered, including 569 which are tagged as possibly extinct and 48 possibly extinct in the wild. [1] [2] 8.6% of all evaluated plant species are listed as critically endangered. The IUCN also lists 284 subspecies ...