This dataset contains observations of seedling establishment and grass competition under precipitation manipulations and herbivory and granivory exclosure treatments in the Chihuahuan desert of southern New Mexico, USA. The experiment took place at the Jornada Basin LTER site. We used a rainfall manipulation system and various herbivore exclosures in a factorial design, to test hypotheses about how precipitation (PPT), competition between grasses and shrub seedlings, and predation affect the germination and first-year survival of Mesquite (Prosopis glandulosa), a shrub that has encroached in Southern Great Plains and Chihuahuan Desert grasslands. Data collected in these files include seedling counts in each treatment over observation years 2016 to 2018. This data supports the related publication in
Ecological Applications
(Weber-Grullon et al. in press).