Skip Navigation


JPR Advance Access originally published online on May 11, 2005
Journal of Plankton Research 2005 27(6):519-529; doi:10.1093/plankt/fbi025
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
27/6/519    most recent
fbi025v1
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 Similar articles in ISI Web of Science
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 (4)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Hidalgo, P.
Right arrow Articles by Morales, C. E.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hidalgo, P.
Right arrow Articles by Morales, C. E.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oupjournals.org.

Ontogenetic vertical distribution and diel migration of the copepod Eucalanus inermis in the oxygen minimum zone off northern Chile (20–21° S)

Pamela Hidalgo1,2,*, Ruben Escribano2 and Carmen E. Morales2

1 Programa de Postgrado en Oceanografia, Universidad de Concepcion, Concepción, Chile and 2 Center for Oceanographic Research in the Eastern South Pacific (FONDAP-COPAS), Estación de Biología Marina-Dichato, Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile

* Corresponding Author: pahidalg{at}udec.cl

Received February 2, 2005; accepted in principle March 24, 2005; accepted for publication April 19, 2005; published online May 11, 2005
Communicating editor: K.J. Flynn

The vertical and ontogenetic distribution, and diel vertical migration (DVM), of Eucalanus inermis in relation to the strong vertical gradient in oxygen concentration associated with an intense oxygen minimum zone (OMZ) were studied at a coastal area off northern Chile (20–21° S). A close relationship between the abundance of the whole copepod population and low oxygen waters was found, with most developmental stages remaining near the base of the oxycline (30–80 m) and within the upper zone of the OMZ (30–200 m). All stages performed DVM but not at all the stations, mainly between the 30–60 and 60–200 m strata; a small fraction (<20%) appeared in the surface layer (0–30 m) mostly at night. This strategy of movement would result in a better utilization of food resources since the strong physical and chemical gradients at the base of the oxycline and upper OMZ boundary might serve as a site of particle accumulation. A secondary fluorescence peak was, in fact, found at all the stations, coinciding with minimal dissolved oxygen (DO, <1 mL O2 L–1) at the base of the oxycline or in the upper OMZ boundary. The relevance of the biogeochemical flux involved in this diel migration pattern was assessed by calculating the potential active input of carbon and nitrogen from the upper layers into deeper the OMZ.


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
 J PLANKTON RESHome page
K. Manriquez, R. Escribano, and P. Hidalgo
The influence of coastal upwelling on the mesozooplankton community structure in the coastal zone off Central/Southern Chile as assessed by automated image analysis
J. Plankton Res., September 1, 2009; 31(9): 1075 - 1088.
[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.