1 UMR267 QualiSud, French National Research Institute for Sustainable Development (IRD), Montpellier, France; QualiSud, Université Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de la Réunion, Montpellier, France. Electronic address: franck.wieringa@ird.fr.
2 Northern Ireland Centre for Food and Health, University of Ulster, Coleraine, Londonderry, United Kingdom. Electronic address: di.thurnham@ulster.ac.uk.