What is the windage of zooplankton? Turbulence avoidance and the wind-driven transport of plankton.

Observations of turbulence avoidance in zooplankton are compared to estimates of the wind-driven turbulence in the upper ocean. Turbulence avoidance is found to prevent the transport of zooplankton in the surface Ekman layer at realistic wind speeds. Plankton that avoid turbulence by moving deeper are no longer transported by the wind-driven Ekman currents near the surface because they are no longer near the surface. Turbulence avoidance is shown to lead to near-shore retention in wind-driven upwelling systems, and to a reduction of the delivery of zooplankton to Georges Bank from the deeper waters of the Gulf of Maine. 1