谁能告诉我频临灭绝动物的英文介绍啊,我需要在英语课上做一个幻灯片,

谁能告诉我频临灭绝动物的英文介绍啊,我需要在英语课上做一个幻灯片,

先给你简单介绍,然后再给你一个网站
An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters. Also it could mean that due to deforestation there may be a lack of food and/or water. The International Union for Conservation of Nature (IUCN) has calculated the percentage of endangered species as 40 percent of all organisms based on the sample of species that have been evaluated through 2006.[2] (Note: the IUCN groups all threatened species for their summary purposes.) Many nations have laws offering protection to conservation reliant species: for example, forbidding hunting, restricting land development or creating preserves. Only a few of the many species at risk of extinction actually make it to the lists and obtain legal protection. Many more species become extinct, or potentially will become extinct, without gaining public notice.
Contents [hide]
1 Conservation status
1.1 IUCN Red List Endangered species
1.2 United States
2 Question of ethics
3 Impact on biodiversity and endangered species
4 Species maintaining importance
5 Helping preserve endangered species
6 Captive breeding programs
7 Legal private farming for profit
8 Gallery
9 See also
10 Notes
11 External links
[edit]Conservation status
Main article: Conservation status
The conservation status of a species is an indicator of the likelihood of that endangered species not living. Many factors are taken into account when assessing the conservation status of a species; not simply the number remaining, but the overall increase or decrease in the population over time, breeding success rates, known threats, and so on. The IUCN Red List is the best known conservation status listing.
Internationally, 194 countries have signed an accord agreeing to create Biodiversity Action Plans to protect endangered and other threatened species. In the United States this plan is usually called a species Recovery Plan.
[edit]IUCN Red List Endangered species
Endangered species under the IUCN Red List refers to a specific category of threatened species, and may include critically endangered species.
IUCN Red List of Threatened Species uses the term endangered species as a specific category of imperilment, rather than as a general term. Under the IUCN Categories and Criteria, endangered species is between critically endangered and vulnerable. Also critically endangered species may also be counted as endangered species and fill all the criteria
The more general term used by the IUCN for species at risk of extinction is threatened species, which also includes the less-at-risk category of vulnerable species together with endangered and critically endangered. IUCN categories include:
Extinct: the last remaining member of the species has died, or is presumed beyond reasonable doubt to have died. Examples: Thylacine, Dodo, Passenger Pigeon, Tyrannosaurus, Caribbean Monk Seal, Dimetrodon, Aurochs
Extinct in the wild: captive individuals survive, but there is no free-living, natural population. Examples: Alagoas Curassow, Guinea pig
Critically endangered: faces an extremely high risk of extinction in the immediate future. Examples: Mountain Gorilla, Arakan Forest Turtle, Ethiopian wolf, Darwin's Fox, Javan Rhino, Brazilian Merganser, Gharial, Vaquita
Endangered: faces a very high risk of extinction in the near future. Examples: Dhole, Blue Whale, Bonobo, Giant Panda, Snow Leopard, African Wild Dog, Tiger, Indian Rhinoceros, three species of Albatrosses, Crowned Solitary Eagle, Markhor, Orangutan, Grevy's zebra
Vulnerable: faces a high risk of extinction in the medium-term. Examples: Cheetah, Gaur, Lion, Sloth Bear, Wolverine, Manatee, Polar Bear, African Golden Cat, Komodo dragon
Conservation dependent: The following animal is not severely threatened, but the animal must depend on conservation programs. Examples: Spotted Hyena, Blanford's fox, Leopard Shark, Black Caiman, Killer whale
Near threatened: may be considered threatened in the near future. Examples: Blue-billed Duck, Solitary Eagle, Small-clawed Otter , Maned Wolf, Tiger Shark, Okapi
Least concern: no immediate threat to the survival of the species. Examples: Nootka Cypress, Wood Pigeon, Harp Seal, White-tailed Mongoose, House Mouse
[edit]United States
"Endangered" in relation to "threatened" under the ESA.
Under the Endangered Species Act in the United States, "endangered" is the more protected of the two categories. The Salt Creek tiger beetle (Cicindela nevadica lincolniana) is an example of an endangered subspecies protected under the ESA.
In the United States alone, the “known species threatened with extinction is ten times higher than the number protected under the Endangered Species Act” (Wilcove & Master, 2008, p. 414). The US Fish and Wildlife Service as well as the National Marine Fisheries Service are held responsible for classifying and protecting endangered species, yet, adding a particular species to the list is a long, controversial process and in reality it represents only a fraction of imperiled plant and animal life (Wilcove & Master, 2008, p. 414).
具体网站
http://www.endangeredspecie.com/