Socio-productive characterization and agroecological analysis of Spanish transhumance Lagos-Susaeta Francisco Rivera-Ferre Marta G. Gallar David Morales-Reyes Zebensui Pérez-Ibarra Irene Universidad de Zaragoza Durá-Alemañ C. Javier Martínez-Carrasco Laura Ontillera-Sánchez Ricardo Sánchez-Zapata José A. Tenza-Peral Alicia Universidad de Zaragoza Soler-Navarro Diego Universidad de Zaragoza Almarcha-Martínez Francisco Oteros-Rozas Elisa 2026 research-article