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Table 3 Marginality factor (MF) scores and global marginality index for selected aquatic hemipteran families in Africa

From: Modelling the spatial distribution of aquatic insects (Order Hemiptera) potentially involved in the transmission of Mycobacterium ulcerans in Africa

Environmental variable Family
Naucoridae Belostomidae Notonectidae Nepidae Gerridae Corixidae
Annual precipitation 0.157 0.211 0.04 0.106 0.092 0.038
Mean temperature -0.486a -0.456a -0.578a -0.558a -0.539a -0.586a
Long-term mean LST -0.417a -0.471a -0.373a -0.453a -0.442a -0.36a
Precipitation of driest quarter 0.22 0.212 0.156 0.142 0.194 0.125
Euclidean distance to water bodies in km -0.117 -0.235 -0.086 -0.124 -0.093 -0.088
Euclidean distance to rivers in km -0.171 -0.241 -0.157 -0.182 -0.175 -0.159
Flow accumulation 0.027 0.073 0.017 0.018 -0.002 0.026
Temperature of coldest quarter -0.275 -0.265 -0.435a -0.42a -0.389a -0.45a
Temperature of warmest quarter -0.484a -0.508a -0.468a -0.452a -0.457a -0.464a
Slope 0.367a 0.171 0.221 0.128 0.244 0.196
Elevation 0.083 0.062 0.065 0.065 0.003 0.124
Wettest index -0.148 0.008 -0.084 -0.04 -0.095 -0.069
Explained specialization (%) 42.8 46.8 34 52.5 55.9 36.9
Global marginality 1.172 0.869 1.271 1.179 1.233 1.287
  1. aVariables with an absolute value > 0.3 are considered highly influential