Question

IUNC classification of flora and fauna

Answer 1

 



Gourisha Choudhary asked in Social Science

Classify the flora and fauna on the basis of IUCN

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Tasneem Firdous answered this
9 helpful votes in Social Science, Class XII-Science

(1)NORMAL SPECIES:Those species whose population level is considered to be normal for their survival.These include cattle,sal,pine etc

(2)ENDANGERED SPECIES;Those species which are in danger of extinction.Their population will be affected if the negative factors like hunting,poaching etc continue to operate.Eg of these species r lion tailed macaque ,sangai

(3)VULNERABLE SPECIES:THOSE SPECIES WHOSE POPULATION HAS DECLINED TO A LEVEL, AND CAN MOVE intoendangered category if the negative factors continue to operate.Eg gangetic dolphin,blue sheep

(4)RARE SPECIES:These species r in a small no. and can moveinto vulnerable or endangered species if the factors affecting their survival continue to operate.Eg desert fox,himalayan brown bear

(5)ENDEMIC SPECIES:These r species which r found in pirticular ares, usually isolated by natural or geographical boundaries.Eg andaman teal ,nicobar pegion

(6)EXTINCT SPECIES:Those species which r not to be foundeven after a long search,in d places where they r likely 2 b found.Eg asiatic cheetah, pink headed duck,dodo

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Answer 2

Endangered (EN) species

Endangered (EN) 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. It is therefore considered to be facing a very high risk of extinction in the wild.

Vulnerable (VU) species

Vulnerable (VU) species is a species which has been categorised by the IUCN as likely to become endangered unless the circumstances threatening its survival and reproduction improve. It is therefore considered to be facing a high risk of extinction in the wild.

Other divisions: Extinct, Functionally Extinct and Extinct in the wild

A species becomes extinct when the last existing member of that species dies. Extinction therefore becomes a certainty when there are no surviving individuals that are able to reproduce and create a new generation.

A species may become functionally extinct when only a handful of individuals survive, which are unable to reproduce due to poor health, age, sparse distribution over a large range, a lack of individuals of both sexes (in sexually reproducing species), or other reasons.

An important aspect of extinction at the present time is human attempts to preserve critically endangered species, which is reflected by the creation of the conservation status “Extinct in the Wild” (EW). Species listed under this status by IUCN are not known to have any living specimens in the wild, and are maintained only in zoos or other artificial environments. Some of these species are functionally extinct; as they are no longer part of their natural habitat and it is unlikely the species will ever be restored to the wild.