Site covs.Roberts et al. 2019 EcoApps

Site covariates file. Fields include: PointYrID (unique identifier for each point visited in each year); Forested (visual estimate from Google Earth imagery of the forest condition); ConDieOffGIS (visual estimate from GoogleEarth imagery and field survey estimates of the percent of standing trees within 100m of the bird survey plot center that have succumbed to beetle mortality); ConDieOfffield (visual estimate by field survey crew members of the percent of standing trees within 100m of the bird survey plot center that have succumbed to beetle mortality); CWHR1 (California Wildlife Habitat Relationship forest type classification); Point (unique point identifier); Year (calendar year in which the visit occurred); MaxOfVisit (number of visits in a single calendar year in which bird survey data were gathered); latitude (geographic coordinate WGS84/NAD83); longitude (geographic coordinate WGS84/NAD83); elevation (elevation in meters sampled from DEM); elevres (elevation residual from a regression of elevation vs. latitude for entire Bioregional Monitoring project sample); aspect (degrees aspect, 0-360); slope (% of vertical); SRI (Solar Radiation Index); southness (proportion of completely south-facing aspect [180 degrees]); ShrubCov (shrub cover, field estimated % cover); TreeCov (tree cover, field estimated % cover); BA (basal area, square feet per acre); g30SNAGS (count of snags greater than 30cm in diameter), totSNAGS (count of snags greater than 10cm in diameter); MaxDBH (diameter in inches of largest trees within 50m); PineProp (proportion of total tree cover that is either Sugar Pine, Ponderosa Pine, or Jeffrey Pine); NDWI (normalized difference wetness index); dNDWI (difference in normalized difference wetness index from baseline value in 2009); cwd (climatic water deficit in mm H2O); dCWD (difference in CWD from baseline value in 2009); tmn (average daily minimum temperature in june); tmx (average daily maximum temperature in June); dtmn (difference in average daily minimum temperature in June from baseline value in 2009); dtmx (difference in average daily maximum temperature in June from baseline value in 2009).