The suitability model for estimating the optimal environmental conditions for European tree species under present and future climates is described in Casalegno et al. 2010 (where the methodology is exemplified by considering Pinus cembra L. in the Alps and the Carpathian mountains). Forest tree species presence/absence information has been used from the European forest ecosystems monitoring program "Forest Focus" (EC, 2003). Bioclimatic and environmental data have also been used to describe current conditions and four global climate models to represent future scenarios. From the European Soil Database (Heineke et al., 1998) information on soil parent material has been derived. From the SRTM digital elevation model (Farr et al., 2007) slope and altitude standard have been computed. From the WORLDCLIM database (Hijmans et al., 2005) 24 bioclimatic factors and indices have been obtained as a function of minimum and maximum monthly averaged temperatures and monthly precipitations. References Casalegno, S., Amatulli, G., Camia, A., Nelson, A., Pekkarinen, A. (2010) Vulnerability of Pinus cembra L. in the Alps and the Carpathian mountains under present and future climates, Forest Ecology and Management, Volume 259, Issue 4, 5 February 2010, Pages 750-761, ISSN: 0378-1127, DOI: 10.1016/j.foreco.2009.10.001. EC, 2003. Regulation (ec) no. 2152/2003. Forest Focus: Monitoring of Forests and Environmental Interactions in the Community. Heineke, H., Eckelmann, W., Thomasson, A., Jones, R., Montanarella, L., Buckley, B., 1998. Land Information Systems Developments for planning the sustainable use of land resources. Research Report. European Soil Boureau, Luxembourg. Farr, T.G., Rosen, P., Caro, E., Crippen, R., Duren, R., Hensley, S., Kobrick, M., Paller, M., Rodriguez, E., Roth, L., Seal, D., Shaffer, S., Shimada, J., Umland, J., Werner, M., Oskin, M., Burbank, D., Alsdorf, D. (2007). The shuttle radar topography mission. Review of Geophysics, Vol. 45, RG200. DOI:10.1029/2005RG000183 Hijmans, R.J., Cameron, S.E., Parra, J.L., Jones, P.G., Jarvis, A. (2005). Very high resolution interpolated climate surfaces for global land areas. International Journal of Climatology, 25 (15), pp. 1965-1978. DOI: 10.1002/joc.1276