The ecotype I will point to here is the tall grass prairie, which you're familiar with at rare. I think in my home county, tall grass prairie was the ecotype that was here at the beginning of time. It's a really unique, diverse set of grasses rooted extremely deeply, up to 16 feet, in the ground. They love drought and they love heat.
This plant has come to have maximum utility for us in providing erosion control, as you might imagine, and also in the research Andrew MacDougall has done at the University of Guelph outlining how much nutrient these plants take up during the summer season. Barely a nutrient gets past them and into the water courses. They provide an enormous impact in terms of erosion control, especially on highly erodible landscapes like those we have here in southern Ontario, where I live, and of course keeping the nutrient on the field, where it belongs.