1. Diel vertical migration of Arctic zooplankton during the polar night by Jørgen Berge, Finlo Cottier, Kim S Last, Øystein Varpe, Eva Leu, Janne Søreide, Ketil Eiane, Stig Falk-Petersen, Kate Willis, Henrik Nygård, Daniel Vogedes, Colin Griffiths, Geir Johnsen, Dag Lorentzen, and Andrew S Brierley Biology Letters Volume 5(1):69-72 February 23, 2009 ©2009 by The Royal Society

2. Derivation of the autocorrelation values for the periodicity of DVM using an example from the 30 to 34 m depth interval. Jørgen Berge et al. Biol. Lett. 2009;5:69-72 ©2009 by The Royal Society

3. DVM signal strength and depth range during the winter in (a) Rijpfjorden and (b) Kongsfjorden. Jørgen Berge et al. Biol. Lett. 2009;5:69-72 ©2009 by The Royal Society