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.