The Ecology of Yam Food Culture in the Yam Belt of West Africa

Yam (Dioscorea rotundata) is a major staple crop in West Africa and plays a central role in regional food security, rural livelihoods, and cultural identity. Its wide ecological adaptation, diverse maturity periods, and in-ground storage capacity make yams critical to seasonal food availability and resilience of smallholder farming systems. Despite its importance, existing yam research has largely emphasized biophysical and agronomic dimensions, with limited integration of the socio-cultural and ecological factors that shape yam-based food systems. This review addresses this gap by synthesizing interdisciplinary knowledge on yam food ecology, focusing on how socio-cultural values, beliefs, behaviours, and interactions influence production, utilization, and sustainability of yam systems. We examine the roles of culture, politics, power relations, gender dynamics, and community organization in structuring yam production and consumption across the West African yam belt. The review further explores the long-standing human–yam relationship and the implications of eroding traditional knowledge for future food system resilience. By adopting a systems and ecological perspective that integrates life and social sciences, this review provides a framework to inform sustainable yam crop improvement, value chain development, and inclusive policy interventions, thereby supporting long-term food security and rural development in West Africa.