A study to examine the runoff and sediment yields of annual and perennial forages under grazing in central Alberta was initiated in 1994. Total runoff was low but dominated by snowmelt. Total rainfall runoff was highest in heavily grazed barley/triticale in 1994, and increased with increasing grazing intensity in perennials in 1995. Total sediment yields and average sediment concentrations were low, and no clear trend with grazing intensity was apparent. Bare ground increased with increased grazing intensity and was much greater in annuals and perennials at all grazing intensities. Litter biomass decreased with increasing grazing intensity and was generally similar in all species, for both years, at heavy and moderate grazing intensity. Results from the rainfall simulation corroborated those under natural rainfall conditions and generally indicated the sustainability of these grazing systems at this site.
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.