Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 112, Issue 22, Pages 6902-6907Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1507366112
Keywords
food trade network; stability; Malthusian growth; food crisis
Categories
Funding
- University of Padova Physics and Astronomy Department [129/2013 Prot. 1634]
- Distinguished Investigator Program, Vice President for Research Office, University of Virginia
- National Socio-Environmental Synthesis Center National Science Foundation [DBI-1052875]
- Div Of Biological Infrastructure
- Direct For Biological Sciences [1052875, 1639145] Funding Source: National Science Foundation
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The escalating food demand by a growing and increasingly affluent global population is placing unprecedented pressure on the limited land and water resources of the planet, underpinning concerns over global food security and its sensitivity to shocks arising from environmental fluctuations, trade policies, and market volatility. Here, we use country-specific demographic records along with food production and trade data for the past 25 y to evaluate the stability and reactivity of the relationship between population dynamics and food availability. We develop a framework for the assessment of the resilience and the reactivity of the coupled population-food system and suggest that over the past two decades both its sensitivity to external perturbations and susceptibility to instability have increased.
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