Articles | Volume 6, issue 1
Earth Surf. Dynam., 6, 203–215, 2018
Earth Surf. Dynam., 6, 203–215, 2018

Research article 16 Mar 2018

Research article | 16 Mar 2018

Quantifying biostabilisation effects of biofilm-secreted and extracted extracellular polymeric substances (EPSs) on sandy substrate

Wietse I. van de Lageweg et al.

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Cited articles

Amos, C. L., Brylinsky, M., Sutherland, T. F., O'Brien, D., Lee, S., and Cramp, A.: The Stability of a Mudflat in the Humber Estuary, South Yorkshire, UK, Geological Society, London, Special Publications, 139, 25–43,, 1998. 
Augspurger, C. and Küsel, K.: Flow Velocity and Primary Production Influences Carbon Utilization in Nascent Epilithic Stream Biofilms, Aquat. Sci., 72, 237–243,, 2010. 
Bhaskar, P. V. and Bhosle, N. B.: Bacterial Extracellular Polymeric Substance (EPS): A Carrier of Heavy Metals in the Marine Food-Chain, Environ. Int., 32, 191–98,
doi10.1016/j.envint.2005.08.010, 2006. 
Black, K. S., Tolhurst, T. J., Paterson, D. M., and Hagerthey, S. E.: Working with Natural Cohesive Sediments, J. Hydraul. Eng., 128, 2–8,, 2002. 
Chenu, C. and Guérif, J.: Mechanical Strength of Clay Minerals as Influenced by an Adsorbed Polysaccharide, Soil Sci. Soc. Am. J., 55, 1076,, 1991. 
Short summary
Sticky sediments are an important component of many rivers and coasts. Stickiness depends on many factors including the presence of micro-organisms, also known as biofilms. We performed a laboratory study to better understand the role of biofilms in controlling sediment transport and dynamics. We find that sand with biofilms requires significantly higher flow velocities to be mobilised compared to uncolonised sand. This will help improve predictions of sediment in response to currents and waves.