Conservation Ecology: Assessing extinction risk: integrating genetic information: Table 1

Table 1. Comparison of information from population viability analysis, incidence functions, ranking methods, and genetics.

Method
Basis
Spatial scale
Temporal scale
Population viability analysis
extant populations

one or a few populations
generally > 5 to <50 generations
Incidence functions
extinct and extant populations
many populations
may refer to extinctions on 10¹ to > 10³ generation time scales, but data are usually from one or two surveys

Ranking methods

extant populations
many populations
highly variable, depending on the type of information used
Genetics
extant populations
many populations
highly variable; may refer to events occurring on a time scale of 10¹ to > 10³ generations

Method	Basis	Spatial scale	Temporal scale
Population viability analysis	extant populations	one or a few populations	generally > 5 to <50 generations
Incidence functions	extinct and extant populations	many populations	may refer to extinctions on 10¹ to > 10³ generation time scales, but data are usually from one or two surveys
Ranking methods	extant populations	many populations	highly variable, depending on the type of information used
Genetics	extant populations	many populations	highly variable; may refer to events occurring on a time scale of 10¹ to > 10³ generations