Table 3 List of static and dynamic explanatory covariates used to model and predict the distribution of marine predators breeding at the Falkland Islands.
From: Important At-Sea Areas of Colonial Breeding Marine Predators on the Southern Patagonian Shelf
Explanatory covariate | Source |
|---|---|
Distance to colony (km) | Calculated using the accCost function in R package gdistance |
Density of animals from other colonies | Calculated using the equation Null density = population size/distance to breeding colony2 |
Bathymetry | 30 arc-second gridded bathymetric data (GEBCO_2014 Grid, GEBCO) |
Slope | Calculated from GEBCO_2014 Grid in R |
Sea Surface Temperature (SST) | SST, Daily optimum interpolation dataset (NOAA, 1/4°, daily) |
Sea Level Anomaly (SLA) | Global ocean physics reanalysis glorys12v1 dataset (EU Copernicus, 1/12°, daily mean) |
Eddy Kinetic Energy (EKE) | Calculated from the U and V zonal and meridian geostrophic currents, where EKE = ½ × (U² + V²). Global ocean physics reanalysis glorys12v1 dataset (EU Copernicus, 1/12°, daily mean) |
