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Fig. 3. Two representative spectra (with wave energy subtracted) describing the
relationship between power, Suu (y axis), and
frequency (x axis) of turbulent fluctuations in flow speed along a
principal axis. Measurements were taken within a microhabitat harboring
abalone (solid line), and 3 m away on the seafloor of an open kelp forest
(dotted line). Energy dissipation rates and fluid shears were estimated from
the spectral intensities of the inertial subrange (i.e. where the spectra
exhibit the –5/3 slope; broken lines), following published methods
(Hinze, 1975;
Trowbridge, 1998).
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