Author(s): V. F. Brekhovskikh; V. K. Debolsky; G. N. Vishnevskaya; N. S. Zolotareva

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Abstract: The effect of benthic organisms (Oligochaeta and Chironomidae) on the erosion of cohesive sediments was studied in a laboratory flume. The critical erosive velocities were shown to be 2-3 times smaller than that of the control sediments. The effect depends strongly on the population density of benthos and temperature of sediments. It was also shown that micro-organisms (bacteria and protozoa), attached to small particles have a great impact on the transportation of suspended sediments due to the decrease in the settling velocity and the critical tractive force.

DOI: https://doi.org/10.1080/00221689109499000

Year: 1991