the International Union for the Conservation of Nature and Natural Resources is the world's main authority on the conservation status of species. Their system divides threatened species into three categories: critically endangered (CR), endangered (EN), and vulnerable (VU). They also list extinctions that have occurred since 1500 AD and taxa that a...
The World Conservsation Union. www.iucn.org
The World Conservation Union
International Union for the Conservation of Nature and Natural Resources.
International Union for Conservation of Nature - a network of members and more than 1000 governmetn and NGO member organizations and volunteer scientists.
International Union for Conservation of Nature.
acronym: International Union for the Conservation of Nature and Natural Resources (now World Conservation Union) (Switzerland)
The International Union for Conservation of Nature, an international, non-governmental organization founded in 1948, advises the World Heritage Committee on the inscription of properties with natural values. Through its worldwide network of specialists, it reports on the state of conservation of World Heritage sites.