Fig. 5.

Predicted distribution area of Scots pine (Pinus sylvestris) in Europe (blue area), and mean diurnal temperature range (DTR) recorded during December 2001 in meteorological stations located over this area showing maximum DTR values in eastern Spain. The DTR is the difference between the daily maximum and minimum temperatures. The inset shows the Scots pine distribution area and the area affected by winter-drought-induced dieback in winter 2001 situated in eastern Spain, near the low-latitude margin (rear edge) of the species distribution area.