Establishment and survival of five weeds were examined across a gradient from uplands to lowlands with 5 combinations of disturbances (long-term grazed, and grazed during experiment, long-term grazed and ungrazed during experiment, long-term ungrazed and ungrazed during experiment, vegetation killed by herbicide and ungrazed during experiment, vegetation removed with soil disturbed and ungrazed during experiment) on the Central Plains Experimental Range (40˚ 49’ N, 104˚ 46’ W) in Northern Colorado. Permanently located quadrats were established in each subplot and assigned to one of six weed species seeding treatments (unseeded, or sown with 500 seed of Kochia scoparia, or Salsola iberica, or Sisymbrium altissimum, or Lepidium densiflorum or Cirsium arvense). Seeds were broadcast sown in April before the last snow. Seedling emergence was recorded in early June and sampled once every month though September, with phonologic state was also recorded.
Citations and enhanced abstracts for journals articles and documents focused on rangeland ecology and management. RSIS is a collaboration between Montana State University, University of Idaho, and University of Wyoming.