Seed Production on Cheatgrass-invaded vs. Non-invaded Habitat.

Relative contributions to the mean density (seeds/0.085m2) and biomass (g) of viable seeds captured in cheatgrass-invaded (“Invaded”) and non-invaded (“Non-Invaded”) shrub-steppe in a Great Basin ecosystem (± SE; statistics not reported where means = SE). Some SE are relatively large because data were pooled at the transect level (n = 6). Differences in production (% Diff) between habitat types are also reported, with statistical significance (P ≤ 0.05) denoted by an asterisk (*). Cheatgrass (Bromus tectorum; Poaceae) and bottlebrush squirreltail (Elymus elymoides; Poaceae) were sufficiently common to merit specific consideration. Seed Production on Cheatgrass-invaded vs. Non-invaded Habitat.