Consider the following information 1 The species has reduced 70 of its population ove...........

Environment and Ecology Wildlife

Consider the following information.

1. The species has reduced 70% of its population over the last 10 years.

2. The species population now is estimated to be less than 250 mature individuals.

3. The species shows at least 20% probability of extinction in the wild in next 20 years.

In which of the following categories of IUCN Red Data Book would you place the species mentioned above with above mentioned characteristics?

Vulnerable (VU)

Critically Endangered (CR)

Near Threatened (NT)

Endangered (EN)

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Explanation:

In the IUCN Red Data Book there are 3 categories that have been associated with statistical data to classification species as belonging to one of the them:
CR – Critically Endangered
1.   More than 90% reduction in population over last 10 years.
2.   Less than 50 matured individuals.
3.   PE(W) is at least 50% in the next 10 years.

EN – Endangered
1.   More than 70% reduction in population over last 10 years.
2.   Less than 250 matured individuals.
3.   PE(W) is at least 20% in the next 20 years.

VU – Vulnerable
1.   Reduction in population is more than 50% in last 10 years.
2.   Lesser than 10,000 mature individuals.
PE(W) is more than 10% in next 100 years.