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A dramatic population growth is projected for the least developed countries of the world (United Nations 2013), which will also suffer disproportionally from ongoing and predicted climate disruptions (IPCC 2013). More frequently occurring extreme weather events have led to yield losses and decreasing cattle populations—aggravating an already precarious situation and leading to critical food shortages. Food security is a function of food availability, food accessibility, food stability and food utilisation (FAO 2002; Ziervogel and Ericksen 2010). Climate change and population growth are seen as key drivers of food insecurity severely affecting farming systems (Muller et al. 2011;Haberl et al. 2011, Strengers et al. 2010), as well as the global energy demand and therefore induced biofuel production (Von Braun 2007a), changing trade patterns through liberalisation and globalisation (Von Braun 2007b; Lotze-Campen et al. 2010), and the state of health of the population (10–20 % AIDS rate in East Africa). Cause–effect chains, in which food security is involved (droughts–diseases–health–human capital), are also drivers over large regions (Ziervogel and Ericksen 2010). Most of these drivers do not only lead to a productivity decline, but also often result in a degraded natural resource base and declining soil fertility (Graef et al. 2000). Rapidly changing framework conditions (Muller 2011) require a thorough understanding of integrated food systems and targeted incorporation of region-specific innovations.JRC.D.4-Economics of Agricultur

Food security in the context of climate change and bioenergy production in Tanzania: methods, tools and applications