Results 161 to 170 of about 43,100 (189)
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Erosion Response of a Disturbed Sagebrush Steppe Hillslope
Journal of Environmental Quality, 1993AbstractLand management activities that disrupt surface vegetation cover pose a serious threat to the long‐term stability of buried‐waste sites located within the semiarid sagebrush (Artemisia tridentata Nutt.) steppe region of the northwestern USA. In this study, we evaluated the erosion response of a sagebrush hillslope subjected to three vegetation ...
Bruce F. Goff +2 more
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The effects of precipitation timing on sagebrush steppe vegetation
Journal of Arid Environments, 2006Abstract Changes in precipitation patterns and inputs have the potential to cause major changes in productivity, composition, and diversity of terrestrial plant communities. Vegetation response to altered timing of precipitation was assessed during a 7-year experiment in an Artemisia tridentata spp.
J.D. Bates +3 more
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Organic matter turnover in a sagebrush steppe landscape
Biogeochemistry, 1989Laboratory incubations of15N-amended soils from a sagebrush steppe in south-central Wyoming indicate that nutrient turnover and availability have complex patterns across the landscape and between microsites. Total and available N and P and microbial C and N were highest in topographic depressions characterized by tall shrub communities. Net and gross N
IngridC. Burke +2 more
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Measuring Plant Cover in Sagebrush Steppe Rangelands: A Comparison of Methods
Environmental Management, 2006Methods that are more cost-effective and objective are needed to detect important vegetation change within acceptable error rates. The objective of this research was to compare visual estimation to three new methods for determining vegetation cover in the sagebrush steppe. Fourteen management units at the US Sheep Experiment Station were identified for
Steven S, Seefeldt, D Terrance, Booth
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Control of Nitrogen Mineralization a Sagebrush Steppe Landscape
Ecology, 1989Factors controlling N turnover in sagebrush ecocystems are separable into two groups. The first group consists of properties that exhibit strong spatial patterning at a landscape scale but are temporally static at time scales of years or tens of years.
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Comparing Burned and Mowed Treatments in Mountain Big Sagebrush Steppe
Environmental Management, 2012Fires in mountain big sagebrush [Artemisia tridentata spp. vaseyana (Rydb.) Beetle] plant communities historically shifted dominance from woody to herbaceous vegetation. However, fire return intervals have lengthened with European settlement, and sagebrush dominance has increased at the expense of herbaceous vegetation in some plant communities ...
K W, Davies, J D, Bates, A M, Nafus
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Indicators of ecosystem function identify alternate states in the sagebrush steppe
Ecological Applications, 2011Models of ecosystem change that incorporate nonlinear dynamics and thresholds, such as state-and-transition models (STMs), are increasingly popular tools for land management decision-making. However, few models are based on systematic collection and documentation of ecological data, and of these, most rely solely on structural indicators (species ...
Emily, Kachergis +2 more
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Succession patterns following soil disturbance in a sagebrush steppe community
Oecologia, 1990A study was begun in 1976 to measure succession patterns following soil disturbance within a sagebrush community in northwestern Colorado. The principal hypothesis was that type of disturbance affects the direction of succession, resulting in different plant communities over time. Successional dynamics were studied through 1988.
Terry, McLendon, Edward F, Redente
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Aeolian sediment transport following wildfire in sagebrush steppe
Journal of Arid Environments, 2009Abstract Wind erosion of soil is an appreciable but unstudied event following fires in cold desert. We examined aeolian transport of sediment for 1 year following fire in semi-arid shrub steppe on loess soils in southern Idaho, USA. Sediment collectors were used to determine horizontal mass transport of soil and saltation sensors and anemometers were
J.B. Sankey, M.J. Germino, N.F. Glenn
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