How do seasonal changes affect temperate deciduous forests?

Temperate deciduous forests are defined by their pronounced seasonal changes, which dictate the appearance, function, and ecology of the biome.12

Seasonal Progression

• Spring: Rising temperatures and increased rainfall stimulate new growth. Before the tree canopy fully develops, sunlight reaches the forest floor, allowing spring ephemerals and other wildflowers to bloom.2
• Summer: A dense, green canopy forms, shading the understory. While this reduces light for ground-level plants, the warm temperatures and moisture fuel the growth of trees and shrubs.2
• Autumn: Shorter days and declining temperatures trigger trees to shed their leaves, a strategy that prevents damage from freezing and conserves energy. The fallen leaves create a layer of litter that is broken down by fungi, bacteria, and invertebrates, returning vital nutrients to the soil.12
• Winter: Trees enter a period of dormancy to survive the cold. During this time, animal activity often shifts; many species migrate, while others rely on food reserves or enter states of dormancy to endure the stressful conditions.234