Zooplankton diel vertical migration is a widespread phenomena, occurring in lakes and oceans. It is regarded as the largest synchronized movement on the Earth. Herein, we observed regular diel changes in zooplankton abundance under the ice of Lake Onego (Russia) and showed that those cannot be explained by their pure ecological behavior. Instead, the rhythm of those changes seem to be regulated by the diel appearance of under-ice convection.
two lessons for this work: