Table 1 Variables used in the model. For each variable we report the resolution, a general description of the variable and the source from which the variable was obtained
From: Roads constrain movement across behavioural processes in a partially migratory ungulate
Variable | Resolution | Description | Source |
|---|---|---|---|
Elevation difference | 25 m | Difference in altitude between start and end of a step | European Environment Agency (EEA) – EU Copernicus. European Digital Elevation Model (EU-DEM), version 1.1 |
Slope | 25 m | Slope in degrees (0–90) | European Environment Agency (EEA) – EU Copernicus. European Digital Elevation Model (EU-DEM), version 1.1 |
Forest density | 20 m | Percentage of area covered by trees (0–100%) | European Environment Agency, 2012 |
NDVI | 250 m | Mean NDVI value (time series of 8 days composite) | Modis—Institute of Surveying, Remote Sensing and Land Information of the University of Natural Resources and Applied Life Sciences, Vienna (2004–2015) |
Road crossings | – | Number of road crossings per step | Open street map. Only paved roads were considered |
Time of day | – | Categorical (day, twilight, night) (see Additional file 1 for details on how it was calculated) | GPS collar data |
Log(Step length) | – | Natural logarithm of hourly step length in meters (see Additional file 1) | GPS collar data |
Movement mode | - | Categorical (Resident, migrant or disperser) | Analysis (see main text) |
Sex | – | Categorical (Sex of the individual) | Collected at capture |