https://hdl.handle.net/20.500.12008/7174 Thu, 23 Apr 2026 10:49:30 GMT 2026-04-23T10:49:30Z https://hdl.handle.net/20.500.12008/54488 Título: Global Agricultural Market and Land-Use Implications of Producing Sustainable Aviation Fuel from Second Crop Corn Ethanol in Brazil Autor: Elobeid, Amani; Carriquiry, Miguel; Bachion, Luciana Chiodi; Arantes, Sofia Marques; Dumortier, Jerome Resumen: Ethanol can potentially serve as a feedstock for sustainable aviation fuel (SAF) production. This study evaluates the global land use and associated carbon implications of expanding Brazilian corn ethanol production using second crop corn. Using a global agricultural trade model, which explicitly represents second crop corn production in Brazil, this analysis examines scenarios regarding ethanol demand growth, corn supply elasticity, and trade constraints. Results show that increasing Brazilian ethanol production using second crop corn can moderately impact international prices, land-use, and greenhouse gas (GHG) emissions, especially when corn supply is highly elastic or double cropping intensifies. Under the limiting assumption of a perfectly elastic second-crop corn land response, our findings show minimal or even negative net land-use change. Focusing on land use, a life cycle analysis reveals that second crop corn ethanol can achieve lower or negative GHG emissions, primarily due to the use of feedstock grown on land already used in the same year (second crop), renewable process energy, and the substitution of soybean meal through corn co-products. These findings suggest that Brazilian second crop corn offers a low-carbon pathway for SAF production, contingent on preserving double-cropping systems and avoiding land-use change. The article highlights critical trade-offs and policy considerations for aligning climate goals with sustainable agricultural and energy systems. Thu, 01 Jan 2026 00:00:00 GMT https://hdl.handle.net/20.500.12008/54488 2026-01-01T00:00:00Z https://hdl.handle.net/20.500.12008/52281 Título: Environmental policy integration in a newly established natural resource-based sector: the role of advocacy coalitions and contrasting conceptions of sustainability Autor: Kefeli, Daniel; Siegel, Karen M.; Pittaluga, Lucía; Dietz, Thomas Resumen: Contributing a new South American case study, this paper seeks to advance the research agenda on processes of policy integration by developing a better understanding of how nascent subsystems become integrated into mature ones and the role that changing beliefs of advocacy coalitions play in fostering policy integration. The paper examines environmental policy integration in Uruguay’s forestry sector since the 1990s and is based on an inductive qualitative analysis of policy documents, sector reports, parliament hearings and semi-structured interviews with key stakeholders. This demonstrates that environmental policy integration has increased continuously since the 1990s, accelerating particularly during the 2000s. We can derive three insights that specifically address this path of integration: a change in the policy beliefs of the dominant advocacy coalition, international salience of the minority coalition`s beliefs and participatory policy processes that foster interactions between opposing coalitions. Despite this, the two advocacy coalitions have crystallized with fundamentally different deep core beliefs about what a sustainable forestry sector should be. While one coalition argues that commercial tree plantations are sufficiently regulated in environmental terms, the other coalition maintains that the way that the pulp industry has developed in Uruguay is fundamentally unsustainable and therefore seeks to change the forestry sector as a whole. Sun, 01 Jan 2023 00:00:00 GMT https://hdl.handle.net/20.500.12008/52281 2023-01-01T00:00:00Z https://hdl.handle.net/20.500.12008/52280 Título: Impacts of Geopolitics and Policy on Latin American Biodiversity and Water Resources Autor: Dumortier, Jerome; Elobeid, Amani; Carriquiry, Miguel Resumen: Latin America is a major agricultural producer with important natural resources. Efforts have been made to protect sensitive areas but are hindered by agricultural trade disruptions outside the control of individual countries due to globally integrated crop markets. This analysis assesses the effects of two trade shocks, that is, the war in Ukraine and vehicle decarbonization in the United States (US), on biodiversity and water resources in Latin America. Results show that an increase in maize and wheat exports from the region triggered by the war in Ukraine negatively affects biodiversity in Brazil and leads to cropland expansion into drought-prone areas in Argentina and Chile. For the case of reduced crop exports from Latin America due to US vehicle decarbonization and the corresponding shift away from US maize ethanol, the pressure on arable land in areas of high biodiversity and water stress is eased. As opposed to agricultural carbon emissions, which have global impacts, biodiversity and water issues have a strong local and regional significance. Regulatory frameworks aiming to protect these regions should be forward looking to detect and shield vulnerable areas from future threats. Other changes affecting global agriculture and trade, for example, sustainable aviation fuels in the US or the European Farm-to-Fork policy, need to be anticipated for effective policies in Latin America. Mon, 01 Jan 2024 00:00:00 GMT https://hdl.handle.net/20.500.12008/52280 2024-01-01T00:00:00Z https://hdl.handle.net/20.500.12008/52279 Título: Trade scenarios compensating for halted wheat and maize exports from Russia and Ukraine increase carbon emissions without easing food insecurity Autor: Carriquiry, Miguel; Dumortier, Jerome; Elobeid, Amani Resumen: The Russian invasion of Ukraine has destabilized global agricultural markets, triggering food price increases. We present scenarios of reduced exports and production affecting both countries that increase maize and wheat prices by up to 4.6% and 7.2%, respectively. Production expansion in other regions can partially compensate for export declines but may increase carbon emissions and will exacerbate ongoing global food security challenges. Sat, 01 Jan 2022 00:00:00 GMT https://hdl.handle.net/20.500.12008/52279 2022-01-01T00:00:00Z