Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (35)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Heywood, K. J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Heywood, K. J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

JOURNAL OF PLANKTON RESEARCH | VOLUME 18 | NUMBER 2 | PAGES 163-184 | 1996
© Oxford University Press

research-article

Diel vertical migration of zooplankton in the Northeast Atlantic

Karen J. Heywood

School of Environmental Sciences, University of East Anglia Norwich NR4 7TJ, UK

Received on November 25, 1995; accepted on October 13, 1995 Acoustic Doppler current profiler (ADCP) data collected during August–September 1991 reveal the diel migration of zooplankton in the northeast Atlantic (50–60{delta}N, 10–40{delta}W). Volume scattering strength has been calculated, from which the speed and depth of migrations have been studied. There are usually at least two layers displaying nocturnal migration, one spending the day at depths of 300–400 m and the other at depths of 50–100 m. Reverse migrations are also found to be a common occurrence in the region studied. Usually, a surface layer begins to descend at dusk as soon as the upward migrating layer arrives in surface waters. Vertical velocity measured from the ADCP provides the first detailed direct measurements of the swimming speeds of the populations in situ, which are generally between 2 and 6cm s–1. Migrating animals within layers do not move in unison; the animals at the leading edge are moving back towards the centre of the layer.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 ICES J. Mar. Sci.Home page
S. L. Parker-Stetter, J. K. Horne, and M. M. Langness
The influence of midwater hypoxia on nekton vertical migration
ICES J. Mar. Sci., July 1, 2009; 66(6): 1296 - 1302.
[Abstract] [Full Text] [PDF]

Home page
 ICES J. Mar. Sci.Home page
T. K. Chereskin and G. A. Tarling
Interannual to diurnal variability in the near-surface scattering layer in Drake Passage
ICES J. Mar. Sci., December 1, 2007; 64(9): 1617 - 1626.
[Abstract] [Full Text] [PDF]

Home page
 ICES J. Mar. Sci.Home page
S. Fielding, G. Griffiths, and H.S.J. Roe
The biological validation of ADCP acoustic backscatter through direct comparison with net samples and model predictions based on acoustic-scattering models
ICES J. Mar. Sci., January 1, 2004; 61(2): 184 - 200.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.