Spontaneous Fruit Species—Ecological Functions, Biodiversity Conservation, and Ecosystem Services

Wild fruit species are key components of natural and semi-natural ecosystems, playing an important role in maintaining ecological balance and supporting biodiversity. This review aims to analyze these species from the perspective of their ecological functions, contribution to biodiversity conservation, and the ecosystem services they provide. Ecologically, wild fruit species contribute to soil stabilization, nutrient cycling, and carbon sequestration, while also serving as essential food sources and habitats for a wide range of organisms, including mammals, birds, insects, and microorganisms. Through these interactions, they support ecosystem functioning and resilience. Beyond their ecological role, these species provide significant socio-economic benefits, particularly in rural areas. They contribute to cultural ecosystem services and represent valuable resources for traditional medicine, while also offering opportunities for income generation through harvesting, processing, commercialization, and rural tourism. In the context of climate change, biodiversity loss, and increasing ecosystem degradation, wild fruit species represent multifunctional natural resources. Their conservation and sustainable use are essential for maintaining ecosystem functionality and promoting sustainable rural development.