“…Since then, many researchers have studied the floristic composition and structure of Greek fir forests and several plant communities have been described from different mountains of southern and central Greece (Barbéro & Quézel 1976, Dimopoulos et al 1996, Bergmeier 2002, Karetsos 2002, Maroulis 2003, Dimitrellos 2005, Vlachos 2006, Kokmotos 2008, Samaras et al 2008. For a detailed phytosociological review see Samaras (2012). However, the ecological causes underlying the floristic differentiation of the Greek fir forests have not yet been studied.…”