Detailed introduction to how Erosion and Deposition in rivers provides a home for wildlife
Perhaps topical given current examples of river-bed-transporting extreme flows happening in many parts of UK…
In a striking similarity to the widespread lack of understanding of the impacts of dredging on flood risk — the problems caused by weirs that choke off the downstream progression of river gravels, cobbles, sands etc. are not widely appreciated.
The presentation below gives a basic outlining of why everything that lives in our rivers depends on the capacity for river channels to continually transport (and periodically deposit) river bed material from the hilltops to the sea. If we work better with (rather than against) these processes it would be far better for both societal needs/costs and the natural world.