Skip Navigation



JPR Advance Access published online on January 24, 2007
Journal of Plankton Research, doi:10.1093/plankt/fbm014
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
29/3/275    most recent
fbm014v1
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 arrowRequest Permissions
Google Scholar
Right arrow Articles by Johnson, C. R.
Right arrow Articles by MacIntyre, S.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Johnson, C. R.
Right arrow Articles by MacIntyre, S.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2007. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Vertical and temporal distribution of two copepod species, Cyclops scutifer and Diaptomus pribilofensis, in 24 hour arctic daylight

Cody R. Johnson1,*, W. John O'Brien1 and Sally MacIntyre2

1 University of North Carolina at Greensboro 2 University of California, Santa Barbara

* CORRESPONDING AUTHOR: codyjohnson{at}cc.usu.edu

Received on October 30, 2006; revised on December 14, 2006; accepted on January 12, 2007


  Abstract

Factors structuring zooplankton communities in areas with twenty-four hours of sunlight are not well understood. In stratified temperate lakes with fish, zooplankton generally undergo a diel vertical migration (DVM) to avoid predation. Zooplankton abundance may also be linked to the quality and quantity of food. To explore factors that determine vertical structure of zooplankton where DVM does not occur, we obtained time-series data on the vertical distribution of the two dominate copepods, Cyclops scutifer and Diaptomus pribilofensis, in Toolik Lake, Alaska, a site within the Arctic Long Term Ecological Research (LTER) area. These two species compose ~80-90% of pelagic mesozooplankton community density. Temperature plays a large role in the vertical distribution of these two species. During the summers of 2002 and 2003 C. scutifer underwent a seasonal vertical migration from the epilimnion to the hypolimnion as water temperatures increased. D. pribilofensis exhibited a strong preference for warmer water and were not present in the water column until epilimnetic temperatures reached ~9°C. During both years of this study C. scutifer and D. pribilofensis segregated vertically in the water column along thermal gradients when the two species overlapped temporally.

Key Words: vertical distribution • temperature • Cyclops scutifer • Diaptomus pribilofensis • Toolik Lake

Communicating editor: KJ Flynn


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




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.