| Assessed ecosystem | ||
|---|---|---|
| Global assessment | ||
| Detailed assessment | ||
| Criteria | Sub-criteria | Assessment |
| A : Reduction in geographic distribution | ||
| A1 : the past 50 years | ||
| A2a : the next 50 years | ||
| A2b : any 50 years period including the past, present and future | ||
| A3 : since 1750 | ||
| B : Restricted geographic distribution | ||
| B1 : extent of occurrence | ||
| B2 : area of occupancy | ||
| B3 : number of location | ||
| C : Environnemental degradation | ||
| C1 : the past 50 years | ||
| C2a : the next 50 years | ||
| C2b : any 50 years period including the past, present and future | ||
| C3 : since 1750 | ||
| D : Disruption of biotic processes or interactions | ||
| D1 : the past 50 years | ||
| D2a : the next 50 years | ||
| D2b : any 50 years period including the past, present and future | ||
| D3 : since 1750 | ||
| E : Quantitative analysis that estimates the probability of ecosystem collapse | ||