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1.EXTINCT SPECIES
Bubal Hartebeest Golden Toad
Pyrenean Ibex Tecopa Pupfish
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Baiji River Dolphin Plants
Sophora toromiro
Cosmosatrosanguineus Encephalartos woodi
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Saint Helena Olive
(Nesiota elliptica) Cooksonia
2.Endangered Species Animal
Lemu Black Rhino
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Hawksbill Turtle Green Checked Parrot
Bengal Tigers Plants
Goldenseal
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Green Jade Flower Black bat flower
Rafflesia Dragon Tree
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3.Vulnerable species.Animals
Polar Bears Cheer Pheasant
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Green Peafowl Lion
Plant
Blue throated Macaw Yellow Cone Flower
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Boronia keysii White Waratah
Iris iberica Muscari szovitsianum
[IRIDACEAE] [HYACINTACEAE]
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4.Threatened categories Animals
Sea Lion Big Horn Sheep Ram
Elephant Seal Arctic Terns
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PLANT
Jaguarundi Tanacetum huronense
Striped Mint-bush Lomatium bradshawii
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Dwarf Lake Iris Cirsium loncholepis
5.Rare species Animals.
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Golden monkeys Red Wolf
Dwarf Blue Sheep Hirola
Northern Muriqui Plants:Cypripedium montanum
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Asclepias curassavica Aeonium davidbramwellii
Purple Gromwell Bomarea
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The International Union for Conservation of Nature
(IUCN) is a United Nations-recognized organization that
maintains the IUCN Red List of Threatened Species, an attempt to
chronicle the plight of endangered species around the world. The
list gets updated at least once annually. As of 2010, the IUCN had
evaluated 52,017 species.
Red List
The IUCN Red List of Threatened Species (also known as the
IUCN Red List or Red Data List), founded in 1963, is the world's
most comprehensive inventory of the global conservation status
of biological species. The International Union for Conservation of
Nature (IUCN) is the world's main authority on the conservation
status of species. A series of Regional Red Lists are produced bycountries or organizations, which assess the risk of extinction to
species within a political management unit.
1. Extinct Species
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Extinct animals are those species which are nolonger living. This group includes prehistoric animals
like dinosaurs and ice-age mammals, as well asmodern species like the Dodo.Extinction is a naturalprocess but humans are causing more extinction atan increasing rate, far more than is natural.
2. An endangered species is a species of organisms facing
a very high risk of extinction. Once they become extinct,they will never be seen on Earth again. .It has been
estimated that over 40% of all living species on Earth are
at risk of going extinct DUE TO THE FOLLOWING
REASONS.
The natural habitats are snatched away from these
species, leaving them only a small portion of theland.
Hunting and trading &
Pollution is another huge factor.
3. Vulnerable species is a species of animals or plants
which are likely to become endangered unless somethingchanges. Something has to be done to remove the things
that are harmful to their survival, and their rate of
reproduction needs to increase. There are 8,565 species
listed as vulnerable on the IUCN Red List.
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Vulnerability is mainly caused by habitat loss or
destruction. The populations of which are wholly or partially
diminishing owing to overdevelopment, wide-scale destruction of the habitat, or otherdisturbances of the environment ;
The populations of which have been seriouslyreduced or the safety of which is not yet assured ;
The populations of which remain abundant but the
existence of which in the entire distribution areais under threat owing to serious detrimentalfactors
.
4. Threatened species : is a species of plant or animal that is
not currently endangered, but may become so if its population
continues to decrease. In most cases it is human action which
has caused the population to decrease so we must be reallycareful to change what we do that impacts upon the species or
their habitat.
If we fail to protect a threatened species, they may become a
endangered species.
Rare species is a group of organisms that are very uncommon
or scarce. This designation may be applied to either a plant oranimal.Reasons why species become rare
Habitat loss and degradation
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Pollution
Persecution and exploitation
Peripheral populations
Disease & Global climate change.