Photo: KNAU radio, photographer unknown. Ain't it cool? Notice the gradient in architecture that coincides with soil depth. There is a real sweet spot in soil depth about 10 - 50 cm away from the bedrock exposure. Also notice all the trapped sand in the microcanyons.
I recently chatted with a writer (Cecile Leblanc) for Earth Notes, a series of radio shorts broadcast on KNAU, an NPR station in Northern Arizona. Apparently, the editor had attended the crust session at the Biennial Conference for research on the Colorado Plateau, discussed in previous posts. He was intrigued by one of the talks, probably Jayne's, specifically about possible crust effects on plants. Anyways that led to a phone call and interview with Cecile. She summarized our conversation in this short. She focused on the possible good effects of crusts on plants, rather than the "crusts as germination barrier" or "crusts as competitors" views, but I think that's reasonable in a Colorado Plateau context.
I can't figure out how to embed this one...but here's a link.