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Characterizing the roughness of freshwater biofilms using a photogrammetric methodology


Barton, AF and Sargison, JE and Osborn, JE and Perkins, KJ and Hallegraeff, GM, Characterizing the roughness of freshwater biofilms using a photogrammetric methodology, Biofouling, 26, (4) pp. 439-448. ISSN 0892-7014 (2010) [Refereed Article]

DOI: doi:10.1080/08927011003699733


The physical roughness of a surface changes when freshwater biofilms colonize and grow on it and this has significant implications for surfaces enclosing water conveying systems such as pipelines and canals. Plates with surfaces initially artificially roughened with varying grit size were deployed in an open channel system and biofilms were allowed to grow on the exposed surface. The plates were retrieved at intervals in time and their surfaces mapped using close range photogrammetry. For a fine grit surface (0.5-4 mm particles), diatom-dominated biofilms initially grew between the roughness elements; they subsequently developed as a mat to create a physically smoother outer surface than the underlying rough surface. For a coarse grit surface (2-4 mm), biofilms colonized faster; in one instance, larger clumps of biofilm were observed as transverse ripples across the plate.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Engineering practice and education
Research Field:Engineering practice and education not elsewhere classified
Objective Division:Energy
Objective Group:Renewable energy
Objective Field:Hydro-electric energy
UTAS Author:Barton, AF (Mr Andrew Barton)
UTAS Author:Sargison, JE (Dr Jane Sargison)
UTAS Author:Osborn, JE (Dr Jon Osborn)
UTAS Author:Perkins, KJ (Miss Kate Perkins)
UTAS Author:Hallegraeff, GM (Professor Gustaaf Hallegraeff)
ID Code:63605
Year Published:2010
Web of Science® Times Cited:6
Deposited By:Engineering
Deposited On:2010-05-13
Last Modified:2011-05-10

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