Explain the typical pattern of the diel vertical migration (DVM). What time scales are we on? Which organisms usually do this?

Typical pattern: Upward moovement at dusk when sun is setting Around midnight – plankton will spread Dawn: mooving down again. Common in copopods, krill amphipod etc. Young copopods are to small to swim up and down and can therefor only participate in onthogenetic migration This occurs all year around – but clearest in spring and summer – productive seasons. I think the idea to go up - get food, go down - avoid predators. most likely response to light that triggers it.