“…Although many wildlife species are closely linked to specific vegetation conditions, site and soil conditions have received little attention as indirect predictors of habitat suitability so far. Whereas climate and topographic variables are often included in habitat models, soil conditions are rarely integrated, usually only when a species is directly affected (Kolströ m and Lumatjä rvi, 1999;Courtright et al, 2001, but refer to Wertz, 1966Moores et al, 1996;Manning, 2000). In most studies assessing habitat quality, vegetation conditions are mapped directly and integrated into habitat suitability models (e.g., Luoto et al, 2002;McComb et al, 2002;Storch, 2002).…”