Origins of food crops

 

Primary regions of diversity of major agricultural crops worldwide.  

Circular plots linking the primary regions of diversity of food crops (only the most significant linkages between regions are shown) with their current importance in the context of calories (kcal capita⁻¹ d⁻¹) in regional food supplies. Each region has a colour representing its own native crops and those colours are connected to other regions due the importance of those crops in the food supply in other regions. The direction of the contribution is indicated by both the primary region's colour and a gap between the connecting line and the consuming region's segment. The magnitude of contribution is indicated by the width of the connecting line. IOI, Indian Ocean Islands; ANZ, Australia and New Zealand; C America, Central America and Mexico.

Circular plots linking the primary regions of diversity of food crops ( displays the full matrix of linkages) 

Degree of  calories in national food supplies hat are derived from crops whose primary regions of diversity do not coincide with the same region as the country (foreign crops). Scale is degree of foreign crop use (1 = 100% use of foreign crops).

Quantity (tonnes) in national agricultural production that are derived from crops whose primary regions of diversity do not coincide with the same region as the country (foreign crops). Scale is degree of foreign crop use (1 = 100% use of foreign crops).


Origins of food crops connect countries worldwide. 2016. Colin K. Khoury, Harold A. Achicanoy, Anne D. Bjorkman, Carlos Navarro-Racines, Luigi Guarino, Ximena Flores-Palacios, Johannes M. M. Engels, John H. Wiersema, Hannes Dempewolf, Steven Sotelo, Julian Ramírez-Villegas, Nora P. Castañeda-Álvarez, Cary Fowler, Andy Jarvis, Loren H. Rieseberg, Paul C. Struik  http://rspb.royalsocietypublishing.org/content/283/1832/20160792