There are 3 sites for this study: Gravelly Ridges, Aeolian, and Dona Ana. Within each site,
there are 8 plots. The plots are 8x8 meters and have an 8x8 buffer zone on both sides of the
plot (up and down). There are four BSNE stands for each plot, 2 in each of the 2 buffer zones
(8 collectors per plot). Each stand contains 2 BSNE collectors with the collection opening at
10cm and 30cm height and an opening of 2 cm wide and 5 cm height. These BSNE collectors are in
a fixed position pointing into the direction of the prevailing wind, which corresponds to the
plot alignment. The collectors in the upwind buffer are facing away from the plot and the
collectors in the downwind buffer are facing into the plot. The idea is the upwind BSNEs
measure the amount of dust entering the plot, and the downwind BSNEs measure the amount of dust
moving off the plot. This provides a measure of the effectiveness of the plot obstructions to
wind blown dust. It is important the BSNEs are fixed in an orientation that points across the
full length of the plot.
In 1933 and 1935, two transects were established in the Natural Revegetation Exclosure and Pasture 8b, respectively, to measure long-term soil movement in areas undergoing mesquite invasion. These two transects, established in a Prosopis-Bouteloua ecotone, were to: "measure any future changes in the extent or succession of three contiguous zones of vegetation, Bouteloua eriopoda, Gutierrezia, and Prosopis glandulosa dunes. Thus, future chartings of this transect should show whether, under the range management practiced, the succession is progressing toward the black grama climax or whether it is retrogressing toward mesquite sandhills." (E.L. Little, 1935, unpublished report) Soil movement at these transects was measured by the distance between the soil surface and a notch in 50 cm t-posts located every 15.2 m (50 ft). The 1731-m Natural Revegetation Exclosure tranect runs north-south through the center of the exclosure and extends 61 m (200ft) beyond the boundary fence on either end. It is located in primarily deep, loamy sand soils. The 457-m Pasture 8b transect is oriented WSW-ENE, and is located in shallower soils. These transects were measured in 1950 (8b only), 1955 (8b only), every five years from 1980-2000, and most recently in 2011. Most steel posts were remeasured at these intervals, but some were lost due to excavation or burial. These were for the most part replaced, with a new baseline notch height initiated on the posts. Data fields correspond to each year of collection, as well as measures of soil deposition or deflation during the intervals. Spatial data include post locations and identifiers.