How do Mediterranean conditions affect plant life on the southern slopes of the Pyrenees?

The Mediterranean influence significantly shapes the plant life on the southern slopes of the Pyrenees, particularly in drier and sunnier areas where Mediterranean-origin orophiles (plants adapted to mountain life) are dominant.1

The impact of this influence is characterized by the following:

• Vegetation Types: While oceanic influence favors broad-leaved deciduous trees, the Mediterranean influence is represented by evergreen broad-leaved trees, which are better adapted to drought conditions.1
• Drought Resistance: In the Central Pyrenees, where the climate becomes more variable and continental, drought-resistant mountain pines replace deciduous trees in the higher, colder, and drier sections of the southern slopes.1
• Distribution: The Mediterranean influence increases from the northwest to the southeast of the chain. These conditions, combined with the mountain relief, create localized enclaves that support diverse plant populations.1

Overall, the vegetation on the southern slopes reflects a distinct adaptation to the thermal contrasts and drier atmosphere characteristic of the region's Mediterranean climate.21