• Plants Emerging from Soils Under Three Range Condition Classes of Desert Grassland

      Dwyer, D. D.; V., E. A. (Society for Range Management, 1978-05-01)
      This research was conducted to determine emergence of seedlings from surface soil collected on black grama (Bouteloua eriopoda) grassland sites in good, fair, and poor condition classes. The species that emerged and their numbers were compared to the species actually found on the field locations. The following conclusions were drawn: (1) The fair condition site had more seedlings emerge than the other two and of these seedlings by far the most were grasses; (2) Mesa dropseed (Sporobolus flexuosus) was the most abundant grass species emerging from collected soil for all three condition classes, but it was much more abundant from fair condition soil; (3) Though black grama dominated the good condition range, emergence of black grama seedlings in the greenhouse from collected soil was much below expectations; (4) More plant species occurred in the field than emerged from collected soils; (5) Secondary successional patterns cannot be predicted accurately from techniques used in this study; (6) Mesa dropseed appears to be a key mid-successional species, filling a broad niche from low good to low fair range condition.