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Characterizing the roughness of freshwater biofilms using a photogrammetric methodology
journal contribution
posted on 2023-05-17, 02:33 authored by Barton, A, Jane SargisonJane Sargison, Jonathan OsbornJonathan Osborn, Perkins, KJ, Gustaaf HallegraeffGustaaf HallegraeffThe 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.
History
Publication title
BiofoulingVolume
26Issue
4Pagination
439-448ISSN
0892-7014Department/School
School of EngineeringPublisher
Taylor & FrancisPlace of publication
UKRepository Status
- Restricted