Before revision: In riffles, these patches form at a velocity between 13 and 89 cm s^-1 , which allows for certain types of litter to be more abundant in riffles because they can stand up to the flow.
After revision: In riffles, these patches form at a velocity between 13 and 89 cm s-1 , which allows for certain types of litter to be more abundant in riffles because they can stand up to the flow.