... France [32] there should be a mean temperature increase of oC or oC, more marked in the summer and in the south of the country, increased precipitation in the winter but a reduction in the summer, ... differences in the range and value of the indices, in relation to the size of the areas and their altitudes Thus A numidica, A nebrodensis and A pinsapo have high indices due to their positions ... bearing in mind the uncertainty about the real evolution of climatic parameters and also the complexity of the phenomena involved: flower induction, fertilization, fruiting, seed dispersal, germination...