Supplement 1. Richness and canopy cover, stability metrics, and community matrix behind Figs. 1, 2, and 3, respectively.

File List figure1.csv (md5: 06a994eb08af16e04f6bda34eb26994c) figure2.csv (md5: d4990bf10fa65ea50683bb8b99ff8365) figure3.csv (md5: 6ef31101ed30f2f46483584716cb3498) Description figure1.csv is a comma separated text file. It contains raw richness data and peak canopy cover data (May and August). Column definitions: Column identifier in experimental whole plot grid Row identifier in experimental whole plot grid Plot identifier Rainout (RO) versus no rainout sublot (NT) identifier Seeding density treatment (defined in Methods) Seeding richness treatment (defined in Methods) Year (field season data were collected) Biomass per square meter (0.25 m2 value multiplied by 4) Exotic richess (0.25 m2) Seeded richness (0.25 m2) Seeded c3 cover (canopy cover, summed across species with C-3 photosynthetic pathway) Seeded c4 cover (canopy cover, summed across species with C-4 photosynthetic pathway) Seeded forb cover (canopy cover, summed across non-graminoids) Exotic cover (canopy cover, summed across non-native non-seeded species only) Seeded cover (canopy cover summer across all seeded species) Annual/biennial cover (canopy cover summed across annual and biennial species) Helianthus maximilliani cover (canopy cover for Helianthus maximilliani) figure2.csv is a comma separated text file. Data is derived from biomass and peak cover data (see Methods). Column definitions: Column identifier in experimental whole plot grid Row identifier in experimental whole plot grid Plot identifier Seeding density treatment (defined in Methods) Seeding richness treatment (defined in Methods) Proportional biomass resistance (defined in Methods) Proportional cover resistance (defined in Methods) Proportional biomass recovery (defined in Methods) Proportional cover recovery (defined in Methods) Bioresilience (resilience in aboveground biomass, defined in Methods) Covresilience (resilience in canopy cover, defined in Methods) figure3.csv is a comma separated text file. It contains a community matrix using peak canopy cover for all seeded and adventitious species encountered (May and August). Column definitions Plot identifier Rainout (RO) versus no rainout subplot (NT) identifier Seeding density treatment (defined in Methods) Seeding richness treatment (defined in Methods) Year (field season data were collected) 6–62. Species identification (first three letters for genus, period, first three letters for species)