Criteria Intensity | Scores | |||
0 No score | 1 Low | 2 Moderate | 3 High | |
Exposure | ||||
Population Reduction Rate | No score | 30% - 50% population decline | 50% - 70% population decline | ≥80% - 90% population decline |
Geographical range (Extent of Occurrence) | No score | >2000 km2 | >500 km2 | >10 km2 |
Consequence criteria-sensitivity | ||||
Extinction Probability | No score | At least 10% within the 50 years | At least 20% within the 25 years | At least 50% within the 10 years |
Change in structure | No score | <20% loss in density) | 20% - 50% loss in density | 50% - 100% loss in density |
Frequency of disturbance | No score | Daily to weekly | Several times a year | Less often |
Consequence criteria resilience | ||||
Natural mortality | No score | 80% or higher mortality | 20% - 50% mortality | <20% mortality |
Recovery time | No score | Less than 1 year | 1 - 10 years | More than 10 years |