Table 1.
Descriptions and sources of environmental variables used in resource selection models
| Variables | Descriptions | Sources |
|---|---|---|
| Dynamic daily variables | ||
| Tmax | Daily maximum temperature | GridMET |
| Tmin | Daily minimum temperature | |
| Trange | Daily difference of temperature | |
| Vp | Daily vaper pressure | |
| Prcp | Daily precipitation | |
| Rhum | Daily average relative humidity | |
| NDVI | Daily normalized difference vegetation index | MODIS MOD09GA products |
| Food | Daily binary layer of artificial food availability (i.e., cattle supplements in the FL site, pig baits in TX sites) | Field records |
| Static variables | ||
| Water | Binary layer of surface water body (i.e., freshwater pond) and large ditches that might hold water after rainfalls | Field data and National Wetlands Inventory |
| Wetland | Binary layer of wetland land cover | |
| Road | Binary layer of road | Field data and Texas Department of Transportation |
| Fence (FL only) | Binary layer of fence | Field data |
| Ditch (FL only) | Binary layer of ditches | Field data |
| Tree canopy | Percentage of tree canopy | NLCD |
| Trail (TX only) | Binary layer of trails | Digitalized based on satellite image |