Increasing homogeneity in global food supplies and the implications for food security

Simple item page
cg.contributor.affiliationInternational Center for Tropical Agricultureen_US
cg.contributor.affiliationCGIAR Research Program on Climate Change, Agriculture and Food Securityen_US
cg.contributor.crpClimate Change, Agriculture and Food Securityen_US
cg.creator.identifierColin K. Khoury: 0000-0001-7893-5744en_US
cg.creator.identifierAndy Jarvis: 0000-0001-6543-0798en_US
cg.creator.identifierJulian Ramirez-Villegas: 0000-0002-8044-583Xen_US
cg.howPublishedFormally Publisheden_US
cg.identifier.dataurlhttps://dx.doi.org/10.7910/DVN/HYOWICen_US
cg.identifier.doihttps://doi.org/10.1073/pnas.1313490111en_US
cg.isijournalISI Journalen_US
cg.issn0027-8424en_US
cg.issue11en_US
cg.journalProceedings of the National Academy of Sciences of the United States of Americaen_US
cg.subject.ciatBIODIVERSITYen_US
cg.subject.ciatGENETIC RESOURCESen_US
cg.subject.ciatNUTRITIONen_US
cg.subject.ciatFOOD SYSTEMSen_US
cg.volume111en_US
dc.contributor.authorKhoury, Colin K.en_US
dc.contributor.authorBjorkman, Anne D.en_US
dc.contributor.authorDempewolf, Hannesen_US
dc.contributor.authorRamírez Villegas, Julián Armandoen_US
dc.contributor.authorGuarino, Luigien_US
dc.contributor.authorJarvis, Andyen_US
dc.contributor.authorRieseberg, Loren H.en_US
dc.contributor.authorStruik, Paul C.en_US
dc.date.accessioned2014-09-09T18:50:47Zen_US
dc.date.available2014-09-09T18:50:47Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/42297en_US
dc.titleIncreasing homogeneity in global food supplies and the implications for food securityen_US
dcterms.abstractThe narrowing of diversity in crop species contributing to the world’s food supplies has been considered a potential threat to food security. However, changes in this diversity have not been quantified globally. We assess trends over the past 50 y in the richness, abundance, and composition of crop species in national food supplies worldwide. Over this period, national per capita food supplies expanded in total quantities of food calories, protein, fat, and weight, with increased proportions of those quantities sourcing from energy-dense foods. At the same time the number of measured crop commodities contributing to national food supplies increased, the relative contribution of these commodities within these supplies became more even, and the dominance of the most significant commodities decreased. As a consequence, national food supplies worldwide became more similar in composition, correlated particularly with an increased supply of a number of globally important cereal and oil crops, and a decline of other cereal, oil, and starchy root species. The increase in homogeneity worldwide portends the establishment of a global standard food supply, which is relatively species-rich in regard to measured crops at the national level, but species-poor globally. These changes in food supplies heighten interdependence among countries in regard to availability and access to these food sources and the genetic resources supporting their production, and give further urgency to nutrition development priorities aimed at bolstering food security.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.audienceScientistsen_US
dcterms.available2014-03-03en_US
dcterms.bibliographicCitationKhoury CK, Bjorkman AD, Dempewolf H, Ramírez Villegas J, Guarino L, Jarvis A, Rieseberg LH, Struik PC. 2014. Increasing homogeneity in global food supplies and the implications for food security. Proceedings of the National Academy of Sciences of the United States of America. 6 p.en_US
dcterms.descriptionCIAT- Outstanding Research Publication Award (ORPA) - 2014en_US
dcterms.extentp. 4001-4006en_US
dcterms.issued2014-03-18en_US
dcterms.languageenen_US
dcterms.licenseCopyrighted; all rights reserveden_US
dcterms.publisherNational Academy of Sciencesen_US
dcterms.subjectdata analysisen_US
dcterms.subjectcropsen_US
dcterms.subjectdiversidad genética como recursoen_US
dcterms.subjectanálisis de datosen_US
dcterms.subjectcultivosen_US
dcterms.subjectgenetic diversity as resourceen_US
dcterms.typeJournal Articleen_US

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIAT Articles in Journals
CIAT Decision and Policy Analysis - DAPA