Sunday, August 12, 2012

CONSERVATION STATUS


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

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

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)

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.

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

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.

Indian Rhinoceros


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