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Burrowing rodents increase landscape heterogeneity in a desert grassland Animals that modify their environment through engineering and herbivory have important impacts on ecosystems, yet the interactive roles of such species have rarely been studied. We studied the comparative and interactive effects of two burrowing herbivorous rodents, Gunnison's prairie dogs (Cynomys gunnisoni) and banner-tailed kangaroo rats (Dipodomys spectabilis), on vegetation where they co-occurred in a Chihuahuan Desert grassland. We found that their effects remained distinct and, thus, non-substitutable, where they co-occurred. The rodents differentially altered plant community structure relative to their different mound types, herbivory, and spatial scales of disturbance. Vegetation structure and plant species... Categories: Publication; Types: Citation, Journal Citation; Tags: Gunnison's prairie dog, Journal of Arid Environments, banner-tailed kangaroo rats, biodiversity, ecosystem engineers, All tags... keystone species, Fewer tags