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