Produkt mají v nabídce:
Diel Vertical Migration of Zooplankton in Lakes and Oceans - Ringelberg, Joop
Whatever theory may be advanced to explain diurnal migration, the underlying reactions involved must be demonstrated conc- sively in the laboratory before the explanation can be ?nally accepted George L. The small animals cover distances of 10-40 m in lakes or even a few hundred metres in the open oceans.
