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Table 5 Test statistics for two MAXENT models from two snail species in Ndumo area, uMkhanyakude, KwaZulu-Natal, South Africa

From: Modelling the spatial and seasonal distribution of suitable habitats of schistosomiasis intermediate host snails using Maxent in Ndumo area, KwaZulu-Natal Province, South Africa

  Bulinus globosus Biomphalaria pfeifferi
Annual Post-rainy Cold/dry Hot/dry Annual Cold/dry
AUC 0.71 0.91 1 0.86 0.87 0.8
Weighted predictiona 0.80 0.83 0.89 0.86 0.90 0.89
Feature typeb 4 5 4 4 4 4
Variable contribution (%)
 Tampl 24.8 na 0 41.1 4.5 0
 EVI 3.9 0 0 5.6 0 0
 NDWI 42.3 52 54.3 22.5 53.4 37.7
 pH 0 0 0 0 0 0
 Rainfall 3.9 27.7 0 3.5 24.6 1.1
 Slope 22.1 5 7.1 27.5 4.3 3.1
 Tmax na 15.2 38.6 na na 58.5
 Tmin 3 0 0 0 13.1 0.6
 NDVI na 0.1 na na na na
 Habitat threshold valuec 0.468 0.513 0.328 0.686 0.630 0.356
 Suitable habitat area (km2) 125.21 87.04 110.71 16.03 62.61 101.54
 Percent suitable habitats (%) 29.29 20.36 25.89 3.75 14.64 23.75
  1. aThe highest weighted prediction indicates the lowest omission rate
  2. bFeature type classes: 1, linear; 2, linear and quadratic; 3, hinge; 4, linear, quadratic, and hinge; 5, linear, quadratic, hinge, product, and threshold
  3. cHabitat threshold values were based on maximum training sensitivity plus specificity from Maxent model
  4. Abbreviations: AUC area under the curve, EVI Enhanced Vegetation Index, NDWI Normalised Difference Water Index, NDVI Normalised Difference Vegetation Index, T max maximum temperature, T ampl temperature amplitude, T min minimum temperature, na not applicable, the variable was not used due to its high correlation with other variables