Biodiversity and its Conservation
Red Data Book, biosphere reserves
- To highlight the legal status of rare species for the purpose of conservation, the International Union for conservation of Nature and Natural resources (IUCN) has established main conservation categories.
- Red list has eight categories of species
- Extinct → The taxon that has been completely eliminated (or) died out from earth is called extinct. Eg. Dodo
- Extinct in wild → The taxon that is absent is any of its natural (or) expected habitats in the wild is known as extinct in wild.
- Critically endangered species ⇒ very high risk of extinction ; can extinct at any moment [Eg. Podophyllum, Berberis nilghiriensis]
- Endangered species ⇒ high risk of extinction in the wild in near future due of decrease in its habitat, excessive predation (or) poaching [Eg. Red Panda, Blue whole, Asiatic wild ass]
- Lower risk species ⇒ Threatened species ; require small attention
- Data deficient species ⇒ Data for making direct / indirect assesment of risk of Extinction is deficient.
- Not evaluated ⇒ That species has not been evaluated yet.
- Rare species ⇒ naturally small population / which are always at risk from pests / predators / Exotic species. Eg. clouded Leopard (Neofelis nebulosa)
- Indeterminate species ⇒ danger in Extinction but the reason is unknown
Eg. 3-banded Armadillo of Brazil
Short eared rabbit of sumatra
Mexican prairie dog
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