Upstream is a small patch of sandy beach with a woodland of Betula nigra.;River scoured boulder pile at downstream end of rapids--this position probably only flooded by large floods but then by high energy enough to maintain open physiognomy. Boulders are rounded by river scour. Sand accumulations between rocks support grasses and composites. Water is high today and this is one of few open community types out of the water. High cover by sturdy well rooted herbaceous perennials.
Representativeness
Plot is half of a small patch of a prairie with some shrubs and small trees. Open physiognomy with lots of rocks.