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3 Cards in this Set

  • Front
  • Back

Diel vertical migrations

Ascend water column during evening/night, descend during day


Many plankton


Change in light intensity is cue for mig

Costs of vertical migration

1. less food available at depths- slower growth and fecundity


2. developmental time eggs carried is prolonged at cooler temps


3. Requires energy

Hypotheses for vertical migration

1. Avoidance of optically orienting predators


2. Metabolic advantages due to temperature or food