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About Red List

About the Red List and its categories.

The Red List is the material prepared by IUCN (International Union for Conservation of Nature) classifying various threatened wild animals of the world and reporting their present habitat status.
The List evaluates the extinction risk level of each individual species from a biological viewpoint, but it possesses no legal power to enforce regulations concerning threatened species. The Red List is broadly employed as fundamental information in advancing the preservation of threatened wild animals.
Referring to the original Red List, the Environment Agency of Japan has compiled the Japanese edition of the List listing threatened taxa inhabiting Japan.

2003 EDITION of the RED LIST CATEGORIES
are classified as follows:

EXTINCT

EX

The last individual of a species has died.

EXTINCT IN THE WILD

EW

A species is known to survive only in cultivation, in captivity.

CRITICALLY ENDANGERED

CR

A species is facing an extremely high risk of extinction in the wild.

ENDANGERED

EN

A species is facing a very high risk of extinction in the wild.

VOLNERABLE

VU

A species is facing a high risk of extinction in the wild.

LOW RISK

LR

Though excluded from any of the above, a species is likely to qualify for VU (vulnerable), which requires conservation.

DATA DEFICIENT

DD

There is inadequate information to make an assessment of the risk of extinction.


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