Cereal prices in Spanish markets have seen a slight increase in December, marking a change from the recent downward trend and reflecting international tensions over climate issues. Prices for common wheat, corn, and barley have all increased, but durum wheat and malt barley have remained stable. These increases are attributed to international tensions due to bad weather in certain areas and increased wheat consumption forecasts in the European Union, but futures contracts in international markets have been on a downward trend.