Wind erosion from military training lands in the Mojave Desert, California, U.S.A.

Donk, S. J. van; Huang, Xuewen; Skidmore, E. L.; Anderson, Alan B.; Gebhart, Dick L.; Prehoda, Valerie E; Kellogg, Elizabeth M

doi:10.1006/jare.2002.1085

Cited by 37 publications

(20 citation statements)

References 20 publications

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“…Engelstaedter and Washington (2007) showed with satellite data that gustiness is better correlated with dust emissions than average wind speed in global ''hotspots'', and our study provides some support for this observation. Previous studies have shown that extreme wind events account for a large proportion of total dust emission over a longer measurement period (e.g., Holcombe et al, 1987;Stout, 2001;van Donk et al, 2003). That the correlations we measured are not significantly improved for hours above threshold vs. peak gust vs. average wind speed may be caused by the reduced efficiency of the dust traps at higher wind speeds (Goossens, 2007(Goossens, , 2010.…”

Section: Regional Contrasts In Seasonal Climate and Dust Fluxmentioning

confidence: 47%

Regional and climatic controls on seasonal dust deposition in the southwestern U.S.

Reheis

Urban

2011

Aeolian Research

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a b s t r a c tVertical dust deposition rates (dust flux) are a complex response to the interaction of seasonal precipitation, wind, changes in plant cover and land use, dust source type, and local vs. distant dust emission in the southwestern U.S. Seasonal dust flux in the Mojave-southern Great Basin (MSGB) deserts, measured from 1999 to 2008, is similar in summer-fall and winter-spring, and antecedent precipitation tends to suppress dust flux in winter-spring. In contrast, dust flux in the eastern Colorado Plateau (ECP) region is much larger in summer-fall than in winter-spring, and twice as large as in the MSGB. ECP dust is related to wind speed, and in the winter-spring to antecedent moisture. Higher summer dust flux in the ECP is likely due to gustier winds and runoff during monsoonal storms when temperature is also higher. Source types in the MSGB and land use in the ECP have important effects on seasonal dust flux. In the MSGB, wet playas produce salt-rich dust during wetter seasons, whereas antecedent and current moisture suppress dust emission from alluvial and dry-playa sources during winter-spring. In the ECP under drought conditions, dust flux at a grazed-and-plowed site increased greatly, and also increased at three annualized, previously grazed sites. Dust fluxes remained relatively consistent at ungrazed and currently grazed sites that have maintained perennial vegetation cover. Under predicted scenarios of future climate change, these results suggest that an increase in summer storms may increase dust flux in both areas, but resultant effects will depend on source type, land use, and vegetation cover.Published by Elsevier B.V.

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Section: Regional Contrasts In Seasonal Climate and Dust Fluxmentioning

confidence: 47%

Regional and climatic controls on seasonal dust deposition in the southwestern U.S.

Reheis

Urban

2011

Aeolian Research

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“…4). Mean flux values were not integrated to estimate sediment mass transport values for the June 10 and August 17 collection dates at the unburned sites, because the flux data did not fit the powerof-height function required for the calculation (Van Donk et al, 2003). Unburned site mean flux values for the July 21 collection date fit a power function with a moderate correlation (R 2 ¼ 0.7) and the estimated sediment mass transport value was 0.08 kg m À1 .…”

Section: Spring/summermentioning

confidence: 99%

Aeolian sediment transport following wildfire in sagebrush steppe

Sankey

Germino

Glenn

2009

Journal of Arid Environments

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“…Mean (±SE) sediment flux (kg m −2 d −1 ) from BSNE collectors located at different heights (0.05, 0.10, 0.20, 0.55 and 1.0 m) in the recently burned and adjacent unburned area. Mean sediment flux was plotted as a function of sample height for each sampling date, and a power model was fitted to each plot to calculate sediment discharge (kg m −1 d −1 ) as described in Van Donk et al (2003).…”

Section: Discussionmentioning

confidence: 99%

“…Rates of sediment transport were calculated as described in Van Donk et al (2003). Briefly, aeolian sediment flux (kg m −2 d −1 ) for each tower was first calculated for each sediment sampling interval and height as: We omitted sediment discharge estimates for which the r 2 value of the power model was less than 0.80 from further statistical analyses, so sample size in the burned and unburned area ranged between three and five height-integrated flux measurements for each time period.…”

Section: Sediment Transport Calculationsmentioning

confidence: 99%

Aeolian nutrient fluxes following wildfire in sagebrush steppe: implications for soil carbon storage

et al. 2011

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Abstract. Pulses of aeolian transport following fire can profoundly affect the biogeochemical cycling of nutrients in semi-arid and arid ecosystems. Our objective was to determine horizontal nutrient fluxes occurring in the saltation zone during an episodic pulse of aeolian transport that occurred following a wildfire in a semi-arid sagebrush steppe ecosystem in southern Idaho, USA. We also examined how temporal trends in nutrient fluxes were affected by changes in particle sizes of eroded mass as well as nutrient concentrations associated with different particle size classes. In the burned area, total carbon (C) and nitrogen (N) fluxes were as high as 235 g C m −1 d −1 and 19 g N m −1 d −1 during the first few months following fire, whereas C and N fluxes were negligible in an adjacent unburned area throughout the study. Temporal variation in C and N fluxes following fire was largely attributable to the redistribution of saltation-sized particles. Total N and organic C concentrations in the soil surface were significantly lower in the burned relative to the unburned area one year after fire. Our results show how an episodic pulse of aeolian transport following fire can affect the spatial distribution of soil C and N, which, in turn, can have important implications for soil C storage. These findings demonstrate how an ecological disturbance can exacerbate a geomorphic process and highlight the need for further research to better understand the role aeolian transport plays in the biogeochemical cycling of C and N in recently burned landscapes.

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Wind erosion from military training lands in the Mojave Desert, California, U.S.A.

Cited by 37 publications

References 20 publications

Regional and climatic controls on seasonal dust deposition in the southwestern U.S.

Regional and climatic controls on seasonal dust deposition in the southwestern U.S.

Aeolian sediment transport following wildfire in sagebrush steppe

Aeolian nutrient fluxes following wildfire in sagebrush steppe: implications for soil carbon storage

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