Measuring the filtration efficiency of the Continuous Plankton Recorder

The Continuous Plankton Recorder (CPR) survey has analysed over 160 000 plankton samples taken in the North East Atlantic over the last 60 years. However, flowmeters have not been routinely fitted to the recorders and there has been the implicit assumption that a CPR sample represents the organisms...

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Bibliographic Details
Published in:Journal of Plankton Research
Main Authors: Walne, A.W., Hays, G.C., Adams, P.R.
Format: Text
Language:English
Published: Oxford University Press 1998
Subjects:
ORIGINAL ARTICLES
North East Atlantic
Online Access:http://plankt.oxfordjournals.org/cgi/content/short/20/10/1963
https://doi.org/10.1093/plankt/20.10.1963
Description
Summary:The Continuous Plankton Recorder (CPR) survey has analysed over 160 000 plankton samples taken in the North East Atlantic over the last 60 years. However, flowmeters have not been routinely fitted to the recorders and there has been the implicit assumption that a CPR sample represents the organisms filtered from 3 m3 of sea water. We describe an electromagnetic flowmeter designed for the CPR and present results which show that on occasions the filtered volume per sample varied significantly from this value.

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