Environmental Engineering Reference
In-Depth Information
Extinct in the Wild (EW)
Threatened categories
Critically Endangered (CR)
Extinction
risk
Adequate data
Endangered (EN)
Vulnerable (VU)
Eval
uated
Near Threatened (NT)
Least Concern (LC)
All
specie
s
Data Deficient (DD)
Not Evaluated (NE)
CRITERIA
Population
reduction
Restricted
geographic range
Small population size
and decline
RED LIST
CATEGORIES
Quantitative
thresholds
Very small or restricted
population
Quantitative
analysis
Figures 6.1a
and 6.1b
Wildlife in a changing world: structure of the Red List Categories
and the five Red List Criteria
Source: Vie
et al
. (2009: 4).
