An integrated model to study varietal diversity in traditional agroecosystems

Agricultural diversity is one of the bases of traditional agroecosystems, having great environmental and cultural importance. The current loss of agricultural diversity is causing serious concern, mainly because of its essential role in supporting global and local food security. Stopping this loss requires a better understanding of how diversity is managed locally and what mechanisms sustain agricultural diversity. Here we propose a generalist agent-based model that couples biological, cultural, and social dynamics to obtain varietal diversity as an emergent phenomenon at the community level. With a mechanistic approach, we explore how four of the model dynamics can shape systems diversity. To validate the model, we performed a bibliographic review on Manihot esculenta and Zea mays case studies. The model yielded compatible results for manioc and maize varietal richness at both community and household levels.

Automated summary

Agricultural diversity is crucial for environmental and cultural reasons, but its loss is currently a major concern. Understanding how diversity is managed and sustained is essential for addressing this issue. This study proposes a comprehensive model that incorporates biological, cultural, and social dynamics to explore the emergence and maintenance of diversity.