“…Flexible in disciplinary application, network analysis has been vetted in a wide range of contexts. Previous work has typically focused on the human domain (Iapadre andTajoli 2014, del Río-Chanona et al 2017), including social relationships (Fletcher et al 2011, Mikusiński et al 2013, De Benedictis et al 2014, international finance (Contreras and Fagiolo 2014) and economic development (Shutters and Muneepeerakul 2012), commodity supply chains (Acemoglu et al 2012, Mastrandrea et al 2014, Possamai et al 2015, Shen et al 2015, Cai and Song 2016, transnational land acquisitions (Seaquist et al 2014), virtual water trade (Dalin et al 2011), transportation networks (Carvalho et al 2012), human migration (Davis et al 2013), and the spread of toxins (Bui-Klimke et al 2014) and diseases (Lentz et al 2016). Studies of commodity trading have extensively employed network analysis methods including input-output analysis (e.g., Roy and Hewings 2009, Acemoglu et al 2012, Aldasoro and Angeloni 2013, Contreras and Fagiolo 2014, open flow networks (e.g., Shen et al 2015), and the use of null network models (e.g., Mastrandrea et al 2014).…”