IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic A: Advances in the Fundamentals of Water Science and Engineering : Entrainment of biostabilized non-cohesive sediments: modelling biofilm
Entrainment of biostabilized non-cohesive sediments: modelling biofilm
Author : E. Vignaga, W.T. Sloan, H. Haynes, V.R. Phoenix, T. Beattie, A.Fernandes and M. Jarvis
The entrainment of sediments in the transition region between non-cohesive and cohesive sediments in the natural environment remains poorly understood (Lick et al., 2004). One complexity is the colonies of microorganisms, termed ‘biofilms’, acting to bind grains together. The aim of this paper is to quantify the biostabilization of a substrate comprised of 1.09mm glass spheres by a single cyanobacterium species biofilm (Phormidium sp.) grown for 1-10weeks. Using videography and ImageJ post- processing software, results indicate that biofilm increases the critical threshold of entrainment of a particle by 23% to 77%. A period of 4 weeks colonization was found to optimise biofilm strength.
File Size : 131,003 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic A: Advances in the Fundamentals of Water Science and Engineering
Date Published : 09/08/2009
Download Now