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#extinct species

3 public questions tagged with this topic.

Biosphere reserve & Wild life sancturies

Which color sheet in Red Data Book represents extinct species?

Historic Red Data Book introduced by IUCN used color-coded loose-leaf pages for quick visual signaling of conservation status to policymakers before digital databases. Red sheets indicated endangered, amber vulnerable, white rare, green out of danger recovering, grey insufficiently known, and black sheets denoted species confirmed extinct or possibly extinct. Black symbolized irreversible loss and mourning. Although modern Red List is electronic, textbook references retain black sheet representing extinct because color concept remains memorable mnemonic for school examinations. Knowledge of th

Ref: IUCN Red Data Book Historical Loose Leaf Colors; NCERT Old Curriculum Black Sheet Extinct Note

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Extinction Topic

Which species was declared extinct in 2011 after last sighting in Cameroon?

“West African Black Rhino” for which species was declared extinct in 2011 after last sighting in cameroon. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Human-driven habitat conversion, exploitation, introduced enemies, pollution, and climate change often interact rather than acting independently. Traits such as slow reproduction or ecological specialization can magnify vulnerability. The remaining alternatives—“Great Auk”, “Dodo”, “Pyrenean Ibex”—refer to different states, processes, or scales

Ref: Conservation Biology, Primack & Sher, 6th Ed., Ch. 7

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