Grasslands make a significant contribution to food security in Patagonia by providing part of the feed requirements of ruminants used for meat, wool and milk production. There is a lack of information regarding the combined effects of climate change and overgrazing and the consequences for pastoral livelihoods that depend on rangelands. Temperature and the amount and seasonal distribution of precipitation were important controls of vegetation structure in Patagonian rangelands . They found that over two-thirds of the total effect of precipitation on above-ground net primary production  was direct, and the other third was indirect . Thus, if evapotranspiration and drought stress increase as temperature increases and rainfall decreases in water-limited ecosystems, a greater exposure of ranchers to a reduction in stocking rate and, therefore, family income would be expected . The number of farmers  exposed to climatic hazards  is approximately 70,000-80,000, who have 14-15 million sheep in Argentina .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report