Begonia eiromischa | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Cucurbitales |
Family: | Begoniaceae |
Genus: | Begonia |
Species: | B. eiromischa |
Binomial name | |
Begonia eiromischa | |
Begonia eiromischa, commonly known as woolly-stalked begonia, is a presumed extinct plant from Malaysia.
It occurred at granite rocks in an altitude of 170 m in the proximity of dipterocarp forests. Begonia eiromischa is only known from two collections made in 1886 and 1898 at Pulau Betong, Penang Island in Malaysia. Its habitat was completely destroyed as a result of agricultural alteration, especially farming and logging. Despite extensive surveys it could not be rediscovered and so it was officially declared extinct by the IUCN in 2007. [1]
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 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.
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Functional extinction is the extinction of a species or other taxon such that:
A species that is extinct in the wild (EW) is one that has been categorized by the International Union for Conservation of Nature as known only by living members kept in captivity or as a naturalized population outside its historic range due to massive habitat loss.
This timeline of extinctions is an historical account of species that have become extinct during the time that modern humans have occupied the Earth.
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