Showing items related by title, author, creator and subject.

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  Response of Big Sagebrush and Three-tip Sagebrush to Season of Clipping

  Wright, H. A. (Society for Range Management, 1970-01-01)

  An 80% clipping treatment reduced yields of big sagebrush (Artemisia tridentata) most when applied during July, moderately when applied during spring, and least when applied during late summer through winter months. Three-tip sagebrush (Artemisia tripartita) responded similarly during July, but it was most tolerant to clipping during April and May. During the fall and winter months, three-tip sagebrush appears less tolerant to clipping than big sagebrush.
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  Effects of Conversion From Sagebrush to Non-Native Grasslands on Sagebrush-Associated Species

  Rottler, Caitlin M.; Noseworthy, Cara E.; Fowers, Beth; Beck, Jeffrey L. (Society for Range Management, 2015-12-01)

  On the Ground • There are as many as 170 vertebrate wildlife species throughout the western United States and Canada that are associated with and sometimes dependent on sagebrush habitats and can be negatively affected by conversion of sagebrush ecosystems to non-native perennial or annual grassland. • We briefly summarize the mechanisms responsible for this conversion and synthesize its effects on wildlife species that are not often in the spotlight, as well as potential effects on management efforts. • Conversion to non-native annual grasslands is especially difficult for sagebrush obligates because annual grass dominance of former sagebrush sites increases fire frequency, effectively eliminating the ability of functioning sagebrush communities to re-establish following burning. • Conversion to non-native perennial grasslands also negatively affects sagebrush obligates, because non-native perennial grasses are able to grow in monocultures that compete with native plants and prevent their re-establishment in areas that are dominated by non-native perennials.
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  Vegetation, ground cover, soil, rainfall simulation, and overland-flow experiments before and after tree removal in woodland-encroached sagebrush steppe: the hydrology component of the Sagebrush Steppe Treatment Evaluation Project (SageSTEP)

  Williams, C. Jason; Pierson, Frederick B.; Kormos, Patrick R.; Al-Hamdan, Osama Z.; Johnson, Justin C.; Univ Arizona, Sch Nat Resources & Environm (COPERNICUS GESELLSCHAFT MBH, 2020-06-17)

  Rainfall simulation and overland-flow experiments enhance understanding of surface hydrology and erosion processes, quantify runoff and erosion rates, and provide valuable data for developing and testing predictive models. We present a unique dataset (1021 experimental plots) of rainfall simulation (1300 plot runs) and overland-flow (838 plot runs) experimental plot data paired with measures of vegetation, ground cover, and surface soil physical properties spanning point to hillslope scales. The experimental data were collected at three sloping sagebrush (Artemisia spp.) sites in the Great Basin, USA, each subjected to woodland encroachment and with conditions representative of intact wooded shrublands and 1-9 years following wildfire, prescribed fire, and/or tree cutting and shredding tree-removal treatments. The methodologies applied in data collection and the cross-scale experimental design uniquely provide scale-dependent, separate measures of interrill (rain splash and sheet flow processes, 0.5 m(2) plots) and concentrated overland-flow runoff and erosion rates (similar to 9 m(2) plots), along with collective rates for these same processes combined over the patch scale (13m(2) plots). The dataset provides a valuable source for developing, assessing, and calibrating/validating runoff and erosion models applicable to diverse plant community dynamics with varying vegetation, ground cover, and surface soil conditions. The experimental data advance understanding and quantification of surface hydrologic and erosion processes for the research domain and potentially for other patchy-vegetated rangeland landscapes elsewhere. Lastly, the unique nature of repeated measures spanning numerous treatments and timescales delivers a valuable dataset for examining long-term landscape vegetation, soil, hydrology, and erosion responses to various management actions, land use, and natural disturbances. The dataset is available from the US Department of Agriculture National Agricultural Library at https://data.nal.usda.gov/search/type/dataset (last access: 7 May 2020) (doi: https://doi.org/10.15482/USDA.ADC/1504518; Pierson et al., 2019).