Rangeland Ecology & Management

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LONG-TERM VEGETATION, HYDROLOGY, AND EROSION RESPONSES TO TREE REMOVAL BY PRESCRIBED FIRE, CUTTING, AND MASTICATION IN SAGEBRUSH STEPPE
Author
Williams, Christopher J.
Pierson, Frederick B.
Nouwakpo, Sayjro K.
Al-Hamdan, Osama
Kormos, Patrick R.
Weltz, Mark A.
Vega, Samantha
Publisher
Society for Range Management
Publication Year
2018
Body

Land managers across the western US are faced with selecting and applying effective tree-removal treatments on sagebrush rangelands, but current understanding regarding long-term ecohydrologic responses to tree removal remains inadequate.� This study used vegetation measures, rainfall simulations, and overland flow experiments to evaluate the impact of prescribed fire, tree cutting, and shredding tree-removal treatments on vegetation and hydrology and erosion processes at two sites 9 yr after tree removal.� All treatments were effective at recruiting sagebrush steppe vegetation, but burning also increased cheatgrass cover in isolated patches around burned trees. �High rates of runoff and erosion were reduced by tree removal treatments at one site, but were minimally altered at a second more degraded site.� Collectively, the study demonstrates that prescribed fire and mechanical tree-removal treatments can effectively re-establish sagebrush steppe vegetation attributes and improve hydrologic function, but also show that hydrologic recovery can require more than 9 yr on more degraded sites as vegetation increases over time.

Language
English
Resource Type
Text
Document Type
Conference Proceedings
Conference Name
SRM Reno, NV