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The impairment or degradation of something, such as a ship's hull or mechanical equipment, as a result of the growth or activity of living organisms.

bi′o·foul′er n.


the degradation of an artificial surface by biological growth
References in periodicals archive ?
Pioneer bacteria adhere and start forming a stratified biofilm, generating chemical signals that act as attractants or deterrents for the establishment of microalgae, spores of algae, fungi, and protozoa; then comes the settlement of invertebrate larvae, known as macrofouling (Fusetani & Clare, 2006).
As shown in Figure 2, the first stage of the program will identify if there are any macrofouling organisms on the surface of the ship hull using camera in Raspberry Pi.
Hence, the duration of the vessel staying stationary will enable the colonizing of micro- and macrofouling as explained below.
A review of marine macrofouling communities with special reference to animal fouling.
Pages 371-386 in Monitoring and control of macrofouling mollusks in fresh water systems.
Figure 21 presents an example of a hull with severe macrofouling.
This can lead to biofouling growth of flora and fauna on surfaces which can be micro or macrofouling, depending on the size of the organisms.
The subsequent onset of macrofouling may be preceded by the formation of bacterial biofilms (bacterial fouling) and such a biofilm may have a deleterious effect on the ability of the surface to remain free from larger fouling organisms.
bow and stern thrusters, fin stabilizers, propellers and propeller shafts, rudders, and out-of-water block marks), must not be "significantly in excess" of five percent macrofouling. Macrofouling is defined as large, distinct multicellular organisms visible to the human eye such as barnacles, tubeworms, or fronds of algae.
Also, according to the standard of ASTM 3621 the macrofouling coverage of panels coated with different coatings was also evaluated in the East China Sea for 2 months (Fig.
Finalmente, en los ensayos antifouling realizados (usando organismos representantes del microfouling y del macrofouling) los resultados mostraron que el quimiotipo 1 (fracciones que contienen pseudopterosinas) y las PsQ y U (las demas pseudopterosinas y seco-pseudopterosians aisladas de los ejemplares de Providencia y San Andres, estan aun en fase de valoracion) tienen propiedades antifouling en concentraciones promedio de 1 mg/ml contra los organismos ensayados, lo que hace estos compuestos muy atractivos para posteriores valoraciones en campo como agentes ambientalmente amigables.