IUCN Red List Assessment
Red List Category
Red List Criteria
The genetic structure of the species indicates that the populations at various sites are largely isolated and the species thus qualifies as fragmented.
Population surveys indicate a steep decline in the total number of animals, from 148 animals per hectare of suitable habitat in the 1960s (when suitable habitat comprised hundreds of hectares, thus likely well over 10,000 mature animals) to about 2,500 mature animals in total in 2002-2003; at an estimated generation time of 15 years (by analogy with other Terrapene species and observed growth rates in captivity), this is a reduction of over 70% of mature animals in three generations. The species may also qualify under criterion C1, but more robust population studies are needed to confirm this.
- 1994Vulnerable(Groombridge 1994)
- 1990Vulnerable(IUCN 1990)
- 1988Vulnerable(IUCN Conservation Monitoring Centre 1988)
- 1986Vulnerable(IUCN Conservation Monitoring Centre 1986)