1991
DOI: 10.1111/j.1365-2427.1991.tb00469.x
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Measurement of lift and drag forces in the m N range experienced by benthic arthropods at flow velocities below 1.2 m s−1

Abstract: 1. A flow tank was constructed which generates homogeneous and stable flow of waler up to velocities of 1.2 m s~'. 2. A sensitive. tw()-component balance with its platform inserted in ihe bottom of the flume allowed ihe measurement ol drag and lift forces in the mN range.3. The drag forces experienced by several benlhic arthropods, which cling to the roughened surface of the platform, are proportional lo the square of the flow vcltKity.4. Large biological \ ariations in lift forces, leading even to negative li… Show more

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Cited by 50 publications
(63 citation statements)
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“…For me, the most impressive study on the topic in the last two decades of the century is that by WEISSENBERGER et al (1991), who produced equipment measuring drag and lift simultaneously on living invertebrates (above a threshold of 0.2 mN). Thereby, they provided striking evidence how different the relative importance of drag and lift can be across various taxa.…”
Section: Better Concepts Better Technologies But No Better Understamentioning
confidence: 99%
“…For me, the most impressive study on the topic in the last two decades of the century is that by WEISSENBERGER et al (1991), who produced equipment measuring drag and lift simultaneously on living invertebrates (above a threshold of 0.2 mN). Thereby, they provided striking evidence how different the relative importance of drag and lift can be across various taxa.…”
Section: Better Concepts Better Technologies But No Better Understamentioning
confidence: 99%
“…In a monospecific aufwuchs situation, the the present study can solely be explained by this age current tended to bend the algae toward the substraeffect. Possibly, it was enhanced by a sheltering effect tum (snail), so that their basal parts, at least, were of the boundary layer (Weissenberger et al 1991): the closer to the shell surface than in stationary water. In a smaller a snail, the deeper it lives within the boundary mixed aufwuchs, the barnacles growing between the layer covering a solid surface.…”
Section: Drag On Clean and Fouled Littorina Littoreamentioning
confidence: 99%
“…Nevertheless, the measured friction force of the whole ventral side (without claws) exceeds the drag forces as determined on living E. assimilis larvae. The highest measured drag forces were about 4.5mN for living larvae (Weißenberger et al, 1991), which however is not the maximum drag. Drag increases with flow velocity and in the experiments of Weißenberger et al larvae had no problems remaining attached to the substrate (Weißenberger et al, 1991).…”
Section: Drag Forces Caused By Water Current and Frictionmentioning
confidence: 99%
“…The highest measured drag forces were about 4.5mN for living larvae (Weißenberger et al, 1991), which however is not the maximum drag. Drag increases with flow velocity and in the experiments of Weißenberger et al larvae had no problems remaining attached to the substrate (Weißenberger et al, 1991). So higher drag forces have to be expected at higher flow velocities.…”
Section: Drag Forces Caused By Water Current and Frictionmentioning
confidence: 99%