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Table 2 Data and standardisation approaches to derive suitability layers for the MCDA procedure

From: Spatial multi-criteria decision analysis to predict suitability for African swine fever endemicity in Africa

Suitability criterion Source Type Standardisation Shape
x jmin x jmax
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 habitat suitability Unpublished data (Vial and Estrada-Pena) Continuous probability surface (habitat suitability) 10 100 Linear increasing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
  1. 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).