Skip Navigation

ICES Journal of Marine Science: Journal du Conseil 1998 55(4):581-586; doi:10.1006/jmsc.1998.0374
© 1998 by ICES/CIEM International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer
This Article
Right arrow FREE Full Text (PDF) Freely available
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 Nicholson, M.
Right arrow Articles by Maxwell, D.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Nicholson, M.
Right arrow Articles by Maxwell, D.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Multivariate trends in phytoplankton species groups in the southern North Sea

Mike Nicholson, Rob Fryer and David Maxwell

CEFAS Fisheries Laboratory Pakefield Road, Lowestoft, Suffolk, NR33 0HT, England, UK
SOAEFD Marine Laboratory PO Box 101, Victoria Road, Torry, Aberdeen, AB11 9DB, Scotland, UK

Correspondence to M. Nicholson: tel. +44 (0)1502 562 244, fax. +44 (0)1502 513 865, e-mail. m.d.nicholson{at}cefas.co.uk

When assessing trends among a group of variables, there may be a joint underlying trend not evident from direct plots of the individual variables against time. To provide a simple summary of this underlying trend, linear projections of multiple time series are constructed to maximize the variance explained by a fitted smoother. A number of tests for assessing the significance of the fitted trend are given. The method is applied to densities of phytoplankton groups observed over a 13-month period and used to contrast the trends observed in two different areas within the southern North Sea.

Keywords: loess, multivariate trend, phytoplankton communities, smoother


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.