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A Funny Picture Showing The Endangered Red List Status |
The conservation
status of a group of organisms (for instance, a species) indicates whether the
group is still extant (that is, members of it are still alive) 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, known threats, and so on.
The IUCN
Red List of Threatened Species is the best-known worldwide conservation status
listing and ranking system. The system divides threatened species into three
categories: Critically Endangered (CR), Endangered (EN), and Vulnerable (VU).
Also listed are the documented extinctions that have occurred since AD 1500 and
taxa that are extinct in the wild. Lower risk taxa are also divided into
categories.
The Convention on International Trade in Endangered Species of Wild
Fauna and Flora (CITES) aims to ensure that international trade in specimens of
wild animals and plants does not threaten their survival.
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.
Internationally,199
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.
Climate
change
Before
anthropogenic global warming species were subjected mainly to regional
pressures, such as overhunting and habitat destruction. With the acceleration
of anthropogenic global warming since the industrial revolution, climate change
has begun to influence species safety. Nigel Stork, in the article
“Re-assessing Extinction Rate” explains, “the key cause of extinction being
climate change, and in particular rising temperatures, rather than
deforestation alone.” Stork believes climate change is the major issue as to
why species are becoming endangered. Stork claims rising temperature on a local
and global level are making it harder for species to reproduce. As global
warming continues, species are no longer able to survive and their kind starts
to deteriorate. This is a repeating cycle that is starting to increase at a
rapid rate because of climate change therefore landing many species on the
endangered species list.
IUCN RED
LIST
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IUCN RED LIST LOGO |
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, and some animals in those categories, include:
Extinct:
Examples: Thylacine, Dinosaurs, Pterosaurs, Javan Tiger, Dodo, Great Auk,
Passenger Pigeon, Carolina Parakeet, Caribbean Monk Seal, Steller's Sea Cow,
Aurochs, Elephant Bird, Moa, Haast's Eagle, Woolly Mammoth, Woolly Rhinoceros,Short-faced
bear, Saber-toothed cat, Dusky Seaside Sparrow, Golden Toad, Toolache Wallaby,
Western Black Rhinoceros, Zanzibar Leopard, Bali Tiger, Caspian Tiger, Atlas
bear
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Extinct Dinosaurs |
Extinct in
the wild: captive individuals survive, but there is no free-living, natural
population. Examples: Hawaiian Crow, Wyoming Toad, Spix's Macaw (maybe
critically endangered), Socorro Dove, Scimitar Oryx, Catarina Pupfish, Barbary
Lion (maybe extinct)
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Wyoming Toad |
Critically
endangered: faces an extremely high risk of extinction in the immediate future.
Examples: Mountain Gorilla, Chinese Giant Salamander, Bactrian Camel, Ethiopian
Wolf, Saiga, Takhi, Iberian Lynx, Kakapo, Arakan Forest Turtle, Sumatran
Rhinoceros, Javan Rhino, Brazilian Merganser, Axolotl, Leatherback Sea Turtle,
Northern White Rhinoceros (maybe extinct in the wild), Gharial, Vaquita,
Philippine Eagle, Brown Spider Monkey, California Condor, Island Fox, Chinese
Alligator, Sumatran Orangutan, Asiatic Cheetah, African Wild Ass, Hawaiian Monk
Seal, Mediterranean Monk Seal, Red Wolf, Amur Leopard, Spix's Macaw (maybe
extinct in the wild), Siamese Crocodile, Addax.
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Mountain Gorilla |
Endangered:
faces a very high risk of extinction in the near future. Examples: Dhole, Blue
Whale, Asian Elephant, Giant Panda, Snow Leopard, African Wild Dog, Green Sea
Turtle, Malayan Tapir, Asiatic Lion, Tiger, Steller's Sea Lion, Markhor,
Bornean Orangutan, Grevy's Zebra, Tasmanian Devil, Japanese Crane, Gorillas,
Chimpanzees, Bonobo, Wild Water Buffalo, African Penguin, Goliath Frog, Lear's
Macaw, Rothschild Giraffe, Giant Otter, Pygmy Hippopotamus, Hyacinth Macaw,
Volcano Rabbit, Proboscis Monkey, Persian Leopard
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Blue Whale |
Vulnerable:
faces a high risk of extinction in the medium-term. Examples: African Elephant,
Cheetah, Gaur, Lion, Sloth Bear, Dugong, Polar Bear, Indian Rhinoceros, Komodo
Dragon, Great White Shark, Hippopotamus, Mandrill, Fossa, Crowned Crane,
Clouded Leopard, Far Eastern Curlew, Galapagos Tortoise, Mountain Zebra,
Humboldt Penguin, Golden Hamster, Maned Sloth, Red Panda, Takin, Yak
Near
threatened: may be considered threatened in the near future. Examples: Eurasian
Curlew, Blue-billed Duck, Solitary Eagle, American Bison, Jaguar, Leopard,
Maned Wolf, Tiger Shark, Southern White Rhinoceros, Okapi, African Grey Parrot,
Striped Hyena, Narwhal, Magellanic Penguin, Asian Golden Cat
Least
concern: no immediate threat to the survival of the species. Examples: Common
Wood Pigeon, Rock Pigeon, Giraffe, Brown Bear, Grey Wolf, House Mouse, Scarlet
Macaw, Platypus, Bald Eagle, Brown Rat, Cane Toad, Humpback Whale, Emperor Penguin,
American Crow , Baboon, Human[3], Mute Swan, Mallard, Red-tailed Hawk, Indian
Peafowl, American Alligator, Southern Elephant Seal, Meerkat, Cougar,
Brown-throated sloth, Eurasian Lynx, Leopard Cat.
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Indian Rhinoceros
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