Difference between endangered and vulnerable species

The numbers of vulnerable, endangered, and critically endangered species are constantly rising despite the global protective measures. Ongoing pace of loss of species diversity is attributed to the host of reasons. For better insight, I am going to explain the difference between vulnerable and endangered species as per the red data book of IUCN.

Classification of species by Red Data Book

Red data book is a systematic documentation of various species of plants, animals, and other living organisms, occurring on the planet. It is being regularly compiled under the aegis of IUCN.

The genuine purpose of Red Data Book is to make available up-to date information about the various species as per their degree of vulnerability. It categories species in the form of–

  1. Vulnerablespecies
  2. Endangeredspecies
  3. Critically endangeredspecies
  4. Extinctspecies

based on determined criterion by IUCN.

Every nation has i’s own red data book to supervise and manage the state of species within their territory.

1. Meaning and examples of vulnerable species

The base of classification is the degree of vulnerability of that specific species in the respective region.

In layman’s term, when there is fifty percent of reduction is noticed in the population of a particular species over a decade of time, it is called the vulnerable species.

Examples of vulnerable species in India are:–

  1. Indian rhinoceros
  2. Red panda
  3. Himalayan yaks,


2. Criterion and examples of endangered species

Endangered species is called when there is seventy percent of reduction of particular species population over a decade of time.

Degree of vulnerability of endangered species is more than that of the vulnerable species. So, more serious efforts demands attention here.

Examples of endangered species are:–
  1. Bengaltiger
  2. Asiaticlion,
  3. Blackbuck

These are classified as endangered species in India.

3. Parameters of critically endangered species

Compare to other two categories, critically endangered is the most serious one.

When there is more than ninety percent of population reduction is noticed of any particular species over a decade of time, it is called critically endangered species.

Examples of critically endangered species are:-

  1. Gharial
  2. Indian vultures
  3. Siberian crane,
  4. Great Indian bustard

are some of names of critically endangered species in India

Meaning and examples of extinct species

This is the last category used for species totally vanished over a certain period of time. Unfortunately, in the world, the numbers of extinct species are not declining as per the conservational measures.

In India, the process of conservation has been started since the colonial age. And, since, independence, the measures has been accelerated by making punitive laws and establishment of sanctuaries, national park, and biospheres, for conservational, as well as protective purposes.

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