The plant or animal species are said to be endangered if they are in danger of extinction when the casual factors continue to operate. Large number of flora and fauna has become endangered due to human activities, habitat loss and their excessive exploitation.
The plant or animal species are said to be threatened if the species are rare, and endangered. The World Conservation Union (IUCN) has categorized the following threat categories for wildlife resources.
(1) Extinct (Ex): This category is given to the species which are not definitely located in the wild during the past 50 years.
(2) Endangered (E): The species which are in danger in the ongoing natural environmental condition are listed in this category.
(3) Rare (R): This category includes the species with small world population that is at present “Endangered” or “Vulnerable” but is at risk. These species are found in small number only in limited habitats.
(4) Indeterminate (I): The species are likely to move into the endangered category in the near future. This category includes the plants and animals whose population is decreasing because of over exploitation.
(5) Threatened (T): The category threatened is used to those species which are considered to belong to any of the above categories (endangered, vulnerable, rare, and indeterminate).
The plant or animal species are said to be threatened if the species are rare, and endangered. The World Conservation Union (IUCN) has categorized the following threat categories for wildlife resources.
(1) Extinct (Ex): This category is given to the species which are not definitely located in the wild during the past 50 years.
(2) Endangered (E): The species which are in danger in the ongoing natural environmental condition are listed in this category.
(3) Rare (R): This category includes the species with small world population that is at present “Endangered” or “Vulnerable” but is at risk. These species are found in small number only in limited habitats.
(4) Indeterminate (I): The species are likely to move into the endangered category in the near future. This category includes the plants and animals whose population is decreasing because of over exploitation.
(5) Threatened (T): The category threatened is used to those species which are considered to belong to any of the above categories (endangered, vulnerable, rare, and indeterminate).
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