Question

Extinct in the wild (EW]
A taxon is Extinct in the wild when exhaustive surveys, in known
and/or expected habitats, have failed to record an individual. explain this statment.​

Answer 1

Answer:

A taxon is Extinct when there is no reasonable doubt that the

last individual has died. A taxon is presumed Extinct when

exhaustive surveys in known and/or expected habitat, at

appropriate times (diurnal, seasonal, annual), throughout its

historic range have failed to record an individual. Surveys

should be over a time frame appropriate to the taxon’s life

cycle and life form.

Extinct in the Wild (EW)

A taxon is Extinct in the Wild when it is known only to survive

in cultivation, in captivity or as a naturalised population (or

populations) well outside the past range. A taxon is presumed

Extinct in the Wild when exhaustive surveys in known and/or

expected habitat, at appropriate times (diurnal, seasonal,

annual), throughout its historic range have failed to record an

individual. Surveys should be over a time frame appropriate

to the taxon’s life cycle and life form.