Agrobiodiversity Shifts on Three Continents Since Vavilov and Harlan: Assessing Causes, Processes, and Implications for Food Security

The benefits and trade-offs of agricultural diversity for food security in low- and middle-income countries: A review of existing knowledge and evidence

“…Dominance of the most abundant crop commodities declined and agricultural production is increasingly homogeneous (Aizen et al, 2019;Khoury et al, 2014). Going back even further in time, Nabhan et al (2012) analysed how agrobiodiversity has changed over time by comparing late 19 th -c. to early 20 th -c. records with their own fieldwork in 2005 in three regions of Tajikistan, Egypt, and the United States. They find that farmers adopt and abandon crop varieties for different reasons in the three locations and that local and global factors influence the conservation of agrobiodiversity.…”