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Fig. 1. Examples of Backscattered Electron Scanning Images (BESI) illustrating soil structural features of soils sampled from native vegetation (NV2) and pasture (PA2, PA3) sites: (a) microaggregates at 1.5 to 1.6 m (NV2), (b) macroaggregates with multiconcave voids at 0.3 to 0.4 m (PA2), and macroaggregates associated with microaggregates at (c) 1.5 to 1.6 m (NV2), and (d) 0.3 to 0.4 m (PA3). Black areas are voids, light gray areas are quartz or oxide grains, and darker gray areas correspond to porous clay. Scale bar: 2 mm.
