Landscape resistance maps

Raw '.asc' files of the optimal resistance models (IBR; i.e. EN, LandFB_100 and LandFb_50) produced with ARCGIS version 9.3 (ESRI 2009), with a raster cell size set to 50 m. The three different landscape resistance models were previously optimized for the study species at the Basque country level (Ruiz-González et al. 2014). Land_Fb100 and Land_Fb50: Binary landscape resistance maps indicating that pine marten gene flow in is facilitated by forests, forestry plantations, scrubland, agroforestry mosaics and pastures and meadows, and that crops have roughly 100 (LandFb_100) or 50 (LandFb_50) times higher resistance than optimal habitat and the existence of a barrier effect of national roads, highways, urban areas, reservoirs and quarries. Ecological Network resistance map; EN: a resistance map analogous to that used in the design of the ecological network of the Basque country (Gurrutxaga et al. 2010a). Land use information was obtained in vector format from the most recent forest map of Spain (Spanish Ministry of the environment, 2006) and from national road network maps (Spanish National Geographic Institute (2008). Full methodological details for model construction are reported in Table 1 and Appendix S2 (Supporting information)