Vegetation structure plays a critical role in habitat complexity by providing shelter, food resources, and natal sites for various species. It influences biodiversity by creating distinct microhabitats that support different organisms. Layering of plants, such as trees, shrubs, and ground cover, contributes to greater ecological niches and improves species interactions. Additionally, complex vegetation structures enhance soil stability and contribute to water retention, which are vital for resilience against environmental stressors, thus maintaining ecosystem functionality.