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Biophysical Interactions In The Straits Of Florida: Turbulent Mixing Due To Diel Vertical Migrations Of Zooplankton, Cayla Whitney Dean
Biophysical Interactions In The Straits Of Florida: Turbulent Mixing Due To Diel Vertical Migrations Of Zooplankton, Cayla Whitney Dean
HCNSO Student Theses and Dissertations
Diel vertical migrations (DVM) comprise the largest animal migration on the planet and are a phenomenon present in all bodies of water on Earth. A strong sound scattering layer undergoing DVM was observed in the Straits of Florida via a bottom-mounted Acoustic Doppler current profiler (ADCP) Workhorse Longranger 75 kHz (Teledyne RD Instruments) located at the 244 m isobath. ADCP average backscatter showed a clear periodicity corresponding with sunrise and sunset times indicating the presence of a nocturnal DVM. Analysis of the ADCP backscatter data indicated zooplankton swimming velocities were faster during sunrise than sunset times. In several cases the …