The International Union for Conservation of Nature is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable".
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit.
The Chinese paddlefish, also known as Chinese swordfish, is a reportedly extinct species of fish that was native to the Yangtze and Yellow River basins in China. At maturity, the species measured an average length of 3 m (9.8 ft), making it one of the largest species of primarily freshwater fishes. It was the only species in the genus Psephurus and one of two living species in the paddlefish family (Polyodontidae), the other being the American paddlefish. It was an anadromous species, meaning that it spent part of its adult life at sea, while migrating upriver to spawn. Unlike its close relative, the Chinese paddlefish was largely piscivorous, and mainly preyed on small to medium-sized fish.
The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status exist and are in use at international, multi-country, national and local levels as well as for consumer use.
Salesópolis is a municipality in the state of São Paulo in Brazil. It is part of the Metropolitan Region of São Paulo. The population is 17,252 in an area of 424.997 km². Salesópolis sits at an elevation of 850 metres (2,790 ft). It is noted for being the source of the Tietê River.
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation. They do not qualify as threatened, near threatened, or conservation dependent.
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be endangered in the near future, although it does not currently qualify for the threatened status.
The dark-brown serotine is a species of vesper bat found in Central and West Africa.
The Malaysian giant turtle or Bornean river turtle is a species of turtle in the family Bataguridae. It is monotypic within the genus Orlitia. It is found in Indonesia and Malaysia.
Fallicambarus gordoni, the Camp Shelby burrowing crayfish, is a species of crayfish in the family Cambaridae. It is found in Mississippi.
Fallicambarus harpi, the Ouachita burrowing crayfish, is a species of crayfish in the family Cambaridae. It is known only in southwest Arkansas.
Fallicambarus petilicarpus, the slenderwrist burrowing crayfish, is a species of crayfish in the family Cambaridae. It is found in southern Arkansas and northern Louisiana.
Fibulacamptus bisetosus is a species of harpacticoid copepod in the family Canthocamptidae. It is found in Australia.
Fibulacamptus gracilior is a species of harpacticoid copepod in the family Canthocamptidae. It is found in Australia.
Haplophthalmus abbreviatus is a species of woodlouse in the family Trichoniscidae. It is found in Europe & Northern Asia.
Haplophthalmus rhinoceros is a species of woodlouse in the family Trichoniscidae. It is found in Europe and Northern Asia.
Hesperodiaptomus californiensis is a species of calanoid copepod in the family Diaptomidae.
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration.
Heteropodagrion sanguinipes is a species of damselfly in the family Thaumatoneuridae. It is found in South America.
The East Sumatran banded langur, also known as the East Sumatran banded surili, is a species of monkey in the family Cercopithecidae. It was formerly considered a subspecies of the Raffles' banded langur Presbytis femoralis, but genetic analysis revealed it to be a separate species. Its range is restricted to the Riau Province of east-central Sumatra. Its conservation status has not been formally assessed by the IUCN. However, due to its declining population and restricted range in small, isolated forests subject to high rates of deforestation, it likely meets the criteria for critically endangered status.
