Date of Award
Master of Science
Natural Resource Ecology and Management
Richard C. Schultz
Thomas M. Isenhart
This study measures soil loss from ephemeral gully (EG) channels, sediment delivery from a small watershed containing an EG, and compares those results to WEPP-generated results. A total of 79 metric tons of soil was observed to be lost in 2009 from 20 EG channels measured. For the 18 runoff events measured in a small watershed (0.35 ha) containing an EG, a total of 50 metric tons of sediment was delivered to the outlet. WEPP performed poorly at predicting soil loss and sediment delivery. In addition, the study examined factors contributing to the connectivity of EGs to stream networks. Canopy cover was the only measured factor positively and significantly correlated with EG connectivity, indicating that dense, rooted vegetation is important in stopping EGs. Finally, interviews with farmers of the study area suggested that maintenance/operating ease, an in-field conservation ethic, and local leadership were factors that influenced conservation-related management decisions.
Nicholaus Reid Ohde
Ohde, Nicholaus Reid, "Ephemeral gullies and ecosystems services: Social and biophysical factors" (2011). Graduate Theses and Dissertations. 11944.