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Julian Huxley, the first Director General of UNESCO, took the initiative to set up IUCN. At the time of its founding IUCN was the only international organisation focusing on the entire spectrum of nature conservation (an international organisation for the protection of birds, now BirdLife International, had been established in 1922).
They range in size from the dwarf slit-faced bat, at 3 cm (1 in) plus a 3 cm (1 in) tail, to the large slit-faced bat, at 9 cm (4 in) plus a 9 cm (4 in) tail. Like all bats, nycterids are capable of true and sustained flight , and have wing lengths ranging from 3 cm (1 in) to 7 cm (3 in).
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:
On the IUCN Red List, endangered is the second-most severe conservation status for wild populations in the IUCN's schema after critically endangered. In 2012, the IUCN Red List featured 3,079 animal and 2,655 plant species as endangered worldwide. [1] The figures for 1998 were 1,102 and 1,197 respectively. [1]
Any extant taxa that cannot be found with the IUCN Red List can be considered NE within IUCN, and the status field should be left blank, unless they are found within another system (e.g. TNC Archived 2009-07-28 at the Wayback Machine, EPBC, ESA, UNEP-WCMC Archived 2011-04-12 at the Wayback Machine).
The conservation dependent category is part of the IUCN 1994 Categories & Criteria (version 2.3), which is no longer used in evaluation of taxa, but which persists in the IUCN Red List for taxa evaluated prior to 2001, when version 3.1 was first used.
The IUCN — International Union for Conservation of Nature. International environmental and conservation organization — focus on environmental conservation
Among the IUCN Species Survival Commission Specialist Groups and IUCN Red List Authorities in existence in 2018, 52 out of the 135 working groups chose to contribute to the Green Status pilot. [3] In interviews of stakeholders performed by the IUCN, it was suggested that Green List assessments may be most effective if performed at multiple ...