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 arrowRequest Permissions
Google Scholar
Right arrow Articles by Sonntag, N. C.
Right arrow Articles by Parslow, J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Sonntag, N. C.
Right arrow Articles by Parslow, J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

JOURNAL OF PLANKTON RESEARCH | VOLUME 3 | NUMBER 3 | PAGES 461-473 | 1981
© Oxford University Press

research-article

Technique of systems identification applied to estimating copepod production

Nicholas C. Sonntag1 and John Parslow

Department of Oceanography, The University of British Columbia Vancouver, B.C., Canada V6T 1W5

Received on March 1, 1980; accepted on March 1, 1981

Systems identification offers some advantages over other methods of estimating zooplankton production. The technique involves specification of a dynamic population model with unknown parameters. By using least squares analysis to fit the model to data series the parameters and production are estimated. Two cohort population models are described and tested against data generated by a simulation model with known production. A third popular method developed by Winberg was also applied for comparison.

The systems identification technique was found to be least sensitive to varying levels of stage analysis and sampling interval. The models were also applied to population data from an enclosed water column (CEPEX). Recommendations are made on the degree of stage aggregation and sampling interval required to obtain good estimates of production for populations with identifiable cohorts.

1Current address: ESSA - Environmental and Social Systems Analysts Ltd., 678 West Broadway, Vancouver, B.C., Canada V5Z 1G6.


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.