Why wood should move in rivers

Large wood is inherently mobile in naturally functioning river corridors, yet management commonly introduces that anchored to limit hazards. Wood periodically mobilized important for: replacing stationary large performs diverse physical and ecological functions; contributing the disturbance regime of corridor; diversifying decay states; dispersing organisms propagules; providing refugia during floodplain inundation mobile-bed channels; dissipating flow energy; supplying downstream environments including lakes, coastlines, open ocean, deep sea. We briefly review what known about mobility corridors suggest priorities for ongoing research management, including: structural designs can pass wood; enhancing piece diversity introduced place; quantifying mobilization transport characteristics natural managed corridors; documentation benefits mobility.