Table 1 List of variables used in habitat analysis
From: Effects of age on foraging behavior in two closely related albatross species
Variable | Abbreviation | Source | Temporal resolution | Spatial resolution |
|---|---|---|---|---|
Bathymetry | DEPTH | GEBCO |  | 0.02° |
Bathymetric gradient | DEPTH SD | Calculated as standard deviation of Depth using function ‘focal’ in package ‘raster’ |  | 0.02° |
Sea surface temperature | SST | NOAA OI SST V2 High-resolution blended dataset | 1 day composite | 0.25° |
Sea surface temperature gradient | SST SD | Calculated as standard deviation of SST using function ‘focal’ in package ‘raster’ | 1 day composite | 0.25° |
Eddy kinetic energy | EKE | Copernicus global ocean gridded L4 sea surface heights and derived variables reprocessed | 1 day composite | 0.25° |
Sea level anomaly | SLA | |||
Wind speed | WIND | NOAA blended sea winds | 1 day composite | 0.25° |
Chlorophyll a concentration | CHL | Copernicus global ocean chlorophyll L4 | 1 day composite | 0.04° |
Chlorophyll a concentration gradient | CHL SD | Calculated as standard deviation of Chl using function ‘focal’ in package ‘raster’ | 1 day composite | 0.04° |