Table 2.
Conservation matrix. Each axis represents a ranked summary of the factors considered in each case study, with weightings assigned according to the key. The maximum values for each axis are listed
| Axis | Key | Giant tortoise | Long-beaked echidna | Tasmanian devil | Elephant | Orangutan | Calamian hog deer | Tapir | Rhinoceros | Tiger | Max |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feasibility | |||||||||||
| Threat | 0 = unknown; 1 = known but still present; 2 = known and removed | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Ecology well understood | 0 = no; 1 = yes | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| Can survive in degraded habitat | 0 = no; 1 = yes | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 |
| Available stock | 0 = no; 1 = yes | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| Community support already present | 0 = no; 1 = yes | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
| Feasibility Total | 4 | 2 | 5 | 4 | 5 | 3 | 4 | 2 | 4 | 6 | |
| Risk | |||||||||||
| Population restoration | 0 = no; 1 = reinforcement; 2 = reintroduction | 0 | 2 | 1.5 | 1.5 | 1.5 | 2 | 1.5 | 1.5 | 1.5 | 2 |
| Conservation introduction | 0 = no; 1 = historical range; 2 = fossil range; 3 = ecological replacement closely related; 4 = ecological replacement distantly related | 4 | 2 | 2 | 2.5 | 1.5 | 2 | 1.5 | 2 | 1.5 | 4 |
| Poses risk to human population | 0 = no; 1 = yes | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 |
| Ease of control/eradication | 0 = easy; 1 = difficult/unkown | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Risk total | 4 | 4 | 4.5 | 6 | 4 | 5 | 4 | 4.5 | 5 | 8 | |
| Benefit | |||||||||||
| Species conservation (highest) | 0 = extinct; 1 = endangered; 2 = critically endangered | 0 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 2 |
| Ecosystem function | 0 = no/unknown; 1 = regional; 2 = continental | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 |
| Benefit total | 1 | 3 | 3 | 3 | 4 | 2 | 3 | 4 | 3 | 4 | |