Saturday was our final day of field work on this (short) trip to south Texas. In addition to sampling vegetation and ground truthing the t-cap data, we needed to collect soil samples from some potholes in the northern extent of our current study site. In the past we have used two soil sample site selection methods, regular grid sampling and regular-interval line transects, to delineate "edges" of potholes. For this trip we used a line transect to collect 20 soil samples from a northern pothole in Jim Hogg County. In this photo Ann is collecting a soil sample that will be processed for several key minerals back at the soils lab at Louisiana State University (we sent them home with Martin).
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