How do hot, dry summers affect plants in Mediterranean scrublands?

In Mediterranean scrublands, the hot, dry summers create significant environmental stress for plants, primarily due to a lack of rainfall combined with high temperatures that drive rapid evaporation from both the soil and the vegetation.1

To survive these conditions, plants in these biomes have developed several key adaptations:

• Dormancy: Because of the intense drought stress in late summer, many scrubland shrubs enter a state of dormancy to conserve energy and moisture.1
• Water Conservation: Many perennial trees and shrubs possess small sclerophyllous leaves, which are structurally adapted to help the plants conserve water and prevent nutrient loss.2
• Growth Cycles: To avoid the harshest summer conditions, most plants time their active growth, including the development of new leaves and flowering, to occur during the spring when temperatures are moderate and moisture from the wet winter season is still available.1

These strategies allow the vegetation to persist in regions where the climate is otherwise too harsh for the growth of most trees.1