Trashumancia y pastos de agostadero en las sierras sorianas durante el siglo XVIII

The objective of this article is twofold. First, it aims to present a general overview of the exploitation regime of pastures during summer time, as well as the 18th-century ownership structure of the migrating cattle in the Sorian mountains. Second, it analyses the evolution during the second half of the century, paying special attention to the effects that the legislation had on the municipal pastures during the reign of Carlos III. The evidence supports the hypothesis that the legislation was the factor which triggered the first crisis in die trashumancia, that preceded the general crisis at die end of the century by several decades.