Abundance and performance of Bromus tectorum and the broader herbaceous community in shrub and open microsites across the Great Basin, Mojave, and San Joaquin Deserts

This data provides the abundance, whole-plant biomass, and spikelet production of Bromus tectorum; native abundance (all species combined); native species richness; exotic species richness; and total species richness in paired shrub and open microsites (i.e., near and away from a focal shrub) at 9 study sites along an environmental gradient across the Great Basin, San Joaquin, and Mojave Deserts, USA. We recorded data for 20 shrub-open pairs (i.e., replicates) at each site. Each data point also gives the site name, replicate (1-20), date of data collection, site-level aridity score for the study year (2020), the average site-level aridity score over the last 20 years, the shrub species, and the volume of the shrub. Data were collected using a 0.25m^2 quadrat subdivided into 100 squares.