Table 2.
List of all candidate predictor variables, their unit, and the spatiotemporal resolution of the environmental data used in the current study
| Variable name | Unit | Spatial resolution | Temporal resolution | References |
|---|---|---|---|---|
| Bathymetry | m | 300 m | – | Edrén et al. (2010), Gilles et al. (2016), Mikkelsen et al. (2016) |
| Seabed slope | ° | 300 m | – | Gilles et al. (2016), Mikkelsen et al. (2016) |
| Distance to coast | m | 300 m | – | Edrén et al. (2010), Gilles et al. (2016), Mikkelsen et al. (2016) |
| Sea-surface temperaturea | °C | 7 km | Hourly | IJsseldijk et al. (2015), Gilles et al. (2016), Mikkelsen et al. (2016) |
| Sea-surface salinitya | PSU | 7 km | Hourly | Edrén et al. (2010), Gilles et al. (2016), Mikkelsen et al. (2016) |
| Sea-surface heighta | m | 7 km | Hourly | IJsseldijk et al. (2015), Benjamins et al. (2017) |
| Sea-surface velocitya | m s−1 | 7 km | Hourly | IJsseldijk et al. (2015), Mikkelsen et al. (2016) |
| Hour of the day | h | – | Hourly | IJsseldijk et al. (2015), Gilles et al. (2016), Schaffeld et al. (2016) |
References are provided to other studies in which the listed environmental conditions were considered important in explaining movement, distribution or general space use of harbour porpoises in this part of their range (i.e., North-East Atlantic and European shelf waters). Note that this is not intended as an exhaustive literature review
aValues derived from the Forecasting Ocean Assimilation Model 7 km Atlantic Margin model (FOAM AMM7) as part of the Copernicus Marine Environment Monitoring Service (CMEMS)