Glob. ecol. biogeogr. Glob. ecol. biogeogr. The Relationship Between Grazing Pressure and Environmental Factors Drives Vegetation Fragmentation Across Global Drylands Zhao Yanchuang Kéfi Sonia Guirado Emilio Berdugo Miguel Eldridge David J. Gross Nicolas Le Bagousse-Pinguet Yoann Saiz Hugo Universidad de Zaragoza Asensio Sergio Ochoa Victoria Gozalo Bea Martínez-Valderrama Jaime Plaza César Valencia Enrique Maestre Fernando T. 2025 research-article