In this study, LeCain et al. measured the effects of light and heavy grazing on carbon exchange, soil respiration and vegetation characteristics, in the Wyoming mixed-grass prairie. Seasonal averages did not vary for any of the measured parameters, however, there were differences when comparisons were made for measurements within the season. In general, carbon exchange rates and green vegetation indices tended to be greater early in the season and lower later in the season in both grazed pastures when compared to the ungrazed pasture. However, since average seasonal differences were limited, the results indicate that grazing at both light and heavy stocking rates does not significantly alter carbon dynamics in the Wyoming mixed-grass prairie, but the authors suggest that incorporating soil carbon measurements with the data from this study would further increase the understanding of carbon exchange in this ecosystem.
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.