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Fig. 6. Drag coefficient versus structural properties. (A,B) Low velocity
(0.5 m s1). (C,D) High velocity (3.0 m
s1). Linear regressions of CD to
log-transformed structural flexibility (slope=0.093,
R2=0.47, P=0.03) and CD to
modulus (slope=0.026, R2=0.50, P=0.02) were
significant at low velocity. Neither relationship was significant at high
velocity (P>0.05). Species labeled as per
Fig. 4.