Effects of turbulent shear flow on zooplankton distribution

Abstract Dynamics of the physical environment should help regulate interactions within zooplankton communities that determine their structure and function. Using a submarine, we have made the first simultaneous measurements of turbulent dissipation rate, vertical velocity shear, temperature, salinity, and zooplankton distribution and abundance. Our results suggest that energetic turbulent regimes due to strong winds, combined with an anomalous region of high vertical shear, broaden the vertical distributions of some zooplankton species, resulting in the selective mixing together of species that are vertically separated under less energetic conditions.

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