EN 
PT_BR 
Climate change is increasing the challenges for agricultural production by altering ecological relationships, increasing the frequency of extreme events, and requiring systems that are better prepared to face risks. This analysis is based on an article by Professor Fabian Menalled of Montana State University and his team, presented by Décio Luiz Gazzoni, an agricultural engineer, member of the Brazilian Academy of Agronomic Sciences and the Scientific Council for Sustainable Agriculture.
The study highlights that ecological and evolutionary processes can occur on similar timescales, influencing the relationship between crops, pests, natural enemies, weeds, and environmental conditions. Variations in temperature, CO₂, and precipitation can also modify competition between species and the efficiency of management practices.
The resilience of agroecosystems is associated with the capacity to withstand impacts, replace components, recover, and adopt new practices. Simplified systems that depend on external inputs tend to be more vulnerable, while more diversified structures, such as agroforestry systems and crop-livestock integration, can increase their responsiveness.
The article also proposes the use of quantitative risk analysis to compare strategies such as no-till farming, plant cover, and crop rotation. In addition to farm scale, the authors point to the need for policies and governance models that promote climate adaptation, food security, and reduced inequalities.
"To overcome socioeconomic and political constraints, the authors advocate for the adoption of polycentric governance—a decentralized, flexible, and participatory model that involves multiple actors in the food chain, promoting policies that facilitate the climate transition, ensure food security, and reduce socioeconomic inequalities," they conclude.
