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Light as a key driver of freshwater biofouling surface roughness in an experimental hydrocanal pipe rig


Ravizza, M and Giosio, D and Henderson, A and Hovenden, M and Hudson, M and Salleh, S and Sargison, J and Shaw, JL and Walker, J and Hallegraeff, G, Light as a key driver of freshwater biofouling surface roughness in an experimental hydrocanal pipe rig, Biofouling, 32, (6) pp. 685-697. ISSN 0892-7014 (2016) [Refereed Article]

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Copyright 2016 Informa UK Limited, trading as Taylor & Francis Group

DOI: doi:10.1080/08927014.2016.1184255


Biofouling in canals and pipelines used for hydroelectric power generation decreases the flow capacity of conduits. A pipeline rig was designed consisting of test sections of varying substrata (PVC, painted steel) and light levels (transparent, frosted, opaque). Stalk-forming diatoms were abundant in both the frosted and transparent PVC pipes but negligible in the painted steel and opaque PVC pipes. Fungi were slightly more abundant in the painted steel pipe but equally present in all the other pipes while bacterial diversity was similar in all pipes. Photosynthetically functional biofouling (mainly diatoms) was able to develop in near darkness. Different biological fouling compositions generated differing friction factors. The highest friction factor was observed in the transparent pipe (densest diatom fouling), the lowest peak friction for the opaque PVC pipe (lowest fouling biomass), and with the painted steel pipe (high fouling biomass, but composed of fungal and bacterial crusts) being intermediate between the opaque and frosted PVC pipes.

Item Details

Item Type:Refereed Article
Keywords:biofouling, diatoms, freshwater fouling, pipeline rig, microfouling
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Phycology (incl. marine grasses)
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Fisheries - aquaculture not elsewhere classified
UTAS Author:Ravizza, M (Ms Matilde Ravizza)
UTAS Author:Giosio, D (Dr Dean Giosio)
UTAS Author:Henderson, A (Associate Professor Alan Henderson)
UTAS Author:Hovenden, M (Professor Mark Hovenden)
UTAS Author:Hudson, M (Miss Monica Hudson)
UTAS Author:Sargison, J (Dr Jane Sargison)
UTAS Author:Walker, J (Dr Jessica Walker)
UTAS Author:Hallegraeff, G (Professor Gustaaf Hallegraeff)
ID Code:109213
Year Published:2016
Funding Support:Australian Research Council (LP1010700)
Web of Science® Times Cited:1
Deposited By:Ecology and Biodiversity
Deposited On:2016-06-03
Last Modified:2018-04-11

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