Table 2.
Data and standardisation approaches to derive suitability layers for the MCDA procedure
| Suitability criterion | Source | Type |
Standardisation |
Shape | |
|---|---|---|---|---|---|
| xjmin | xjmax | ||||
| Warthog habitat suitability |
African mammals databank (http://www.gisbau.uniroma1.it/amd/) |
Continuous probability surface (habitat suitability) |
1 |
RiskUniform(35,50)1 |
Linear decreasing2 |
| Bushpig (P. porcus) habitat suitability |
African mammals databank |
Continuous probability surface (habitat suitability) |
1 |
RiskUniform(10,37)1 |
Linear decreasing2 |
| Bushpig (P. larvatus) habitat suitability |
African mammals databank |
Continuous probability surface (habitat suitability) |
1 |
RiskUniform(11,26)1 |
Linear decreasing2 |
| Giant forest hog habitat suitability |
African mammals databank |
Continuous probability surface (habitat suitability) |
1 |
RiskUniform(11,40)1 |
Linear decreasing2 |
| Pig population density |
FAO GLW (http://www.fao.org/ag/AGAInfo/resources/en/glw/GLW_dens.html) |
Predicted density surface pigs/km2 (adjusted to match FAOSTAT 2005 national totals) |
0 |
RiskUniform(1,14)1 |
Linear increasing |
|
Ornithodoros spp. habitat suitability |
Unpublished data (Vial and Estrada-Pena) |
Continuous probability surface (habitat suitability) |
10 |
100 |
Linear increasing |
| Travel time to market centres >20,000 | Harvest Choice (http://harvestchoice.org/products/data) | Raster describing travel time (hrs) | 0 | RiskUniform(15,30)1 | Linear decreasing |
1Lower and upper bounds of the distribution defined by the 90th and 99th percentile of values for Africa within area defined by model constraints; 2Values describe the Mahalanobis distance from ideal habitat suitability: suitability decreases as distance increases (see [40] for full details).