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Table 1 Independent variables and hypothesized relationships with the abundance of bank voles, the ex vivo virus survival and the human presence

From: Modelling zoonotic diseases in humans: comparison of methods for hantavirus in Sweden

Variable in logistic model, BRT and CV model

Variable in MaxEnt model

Abundance of bank voles

Ex vivo virus survival

Human presence

Source

Area of forests in a 3-km radius around the dwelling (m2)

Forests

x

  

SLU Skogskarta

*Mean volume of spruce per hectare in a 3-km radius around the dwelling (m3/ha)

Volume of spruce

x

  

SLU Skogskarta

Mean volume of pines per hectare in a 3-km radius around the dwelling (m3/ha)

Volume of pine

x

  

SLU Skogskarta

*Maximum distance to forests in a 3-km radius around the dwelling (m)

 

x

  

SLU Skogskarta

Number of patches of forests 3-km radius

 

x

  

SLU Skogskarta

Mean shape index of forests 3-km radius

 

x

  

SLU Skogskarta

Mean contiguity index of forests in a 3-km radius

 

x

  

SLU Skogskarta

Mean Euclidian nearest-neighbor distance between patches of forests in a 3-km radius (m)

 

x

  

SLU Skogskarta

*Area of peat bogs in a 3-km radius around the dwelling (m2)

Peat bogs

x

  

SVK

Mean snow depth between 1991 and 1998 (cm)

Snow depth

x

x

 

SMHI

Average duration of the snow when it is present for at least 10 days (days)

Snow period

x

x

 

SMHI

Majority of grain size of the soil (1 = coarse, 2 = medium, 3 = fine) in a 3-km radius

Soil grain size

 

x

 

SGU

*Elevation (m)

Elevation

x

x

x

Aster GDEM

*Distance to the sea coast (m)

Distance to the sea

x

x

x

SVK

*Population density (inhabitant/km2)

Population density

  

x

Gridded population of the world

Total length of public roads in a 3-km radius (m)

Roads

  

x

SVK

*Distance to holiday homes (m)

Holiday homes

  

x

Statistiska Centralbyran

Total length of the water ways in a 3-km radius (m)

Water ways

  

x

Swedish Places

  1. * Data log-transformed.