Table 1. List and description of spatial variables hypothesized to influence selection of nests by golden eagles.
Subscript denotes if multiple scales, quadratic terms, means and standard deviations, or if temporal lag effects of variables were modeled.
| Variable | Description |
|---|---|
| ags | Proportion of tillage agriculture |
| cliffs | Proportion of cliff habitat |
| fos | Proportion of flat and open habitat (Theobald 2007) |
| sts | Proportion of steep habitat (Theobald 2007) |
| sls | Proportion of sloped habitat (Theobald 2007) |
| ndvis,q | Normalized difference vegetation index averaged between 2004 and 2007 |
| treeds | Proportion of deciduous and coniferous (non-riparian) tree habitat |
| r13s | Proportion of primary road classes |
| elevq | Digital elevation model of elevation at 30m resolution |
| ppt4q,t | April precipitation |
| tmin4q,t | April mean minimum temperature |
| tmax4q,t | April max minimum temperature |
| herbms | Estimate of continuous herbaceous cover at 30m resolution |
| sagems | Estimate of continuous sagebrush cover at 30m resolution |
| shrhms | Estimate of shrub height averaged at 30m resolution |
| shrbms | Estimate of continuous cover of all shrubs at 30m resolution |
| countsofmalest | Count of greater sage-grouse males on leks in 5km moving window |
| countsoflekst | Number of active greater sage-grouse leks in 5km moving window |
s variable modeled from moving window of scales 200m, 1-, 3-, and 5km.
ms calculated value at each moving window scale, and mean and standard deviation at each scale.
q variable modeled with quadratic term.
t temporally varying covariate modeled with current year, and 1 year lagged effect.