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Table 1 Contribution of each environmental variable to the Strongyloides stercoralis hookworm niche model

From: Mapping the global distribution of Strongyloides stercoralis and hookworms by ecological niche modeling

Variable Percent contribution of variable to model Optimal range/main categories
S. stercoralis niche model
 Annual precipitation 46.5 1000–1500 mm
 Land cover 17.0 1. Urban
2. Paddy field
3. Cropland/other vegetation mosaic
 Annual mean temperature 13.8  > 26 ºC
 Soil pH 10.5 5.3–6.5
 Soil organic carbon 7.2  ≤ 50 g/kg
 Precipitation seasonality 5 50-100 mm
Hookworm niche model
 Annual precipitation 32.2 1000–2000 mm
 Annual mean temperature 26.6 26–30 ºC
 Land cover 21.8 1. Mangrove
2. Urban
3. Cropland/other vegetation mosaic
 Soil pH 10.6 5.5–6.5
 Soil organic carbon 3.9  > 25 g/kg
 Precipitation seasonality 1.9 60–120 mm
 Isothermality 1.7  < 40 ºC
 Annual temperature range 1.2  < 14 ºC
 Annual mean diurnal range 0.1  < 2 ºC