New Zealand Journal of Marine and Freshwater Research abstracts

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The carbohydrate-to-protein ratio as a biological indicator of water movement

ROD L. OLIVER¹

JACCO C. KROMKAMP²*

¹Murray-Darling Freshwater Research Centre P. O. Box 921, Albury, NSW, Australia

²University of Amsterdam Laboratory of Microbiology Nieuwe Achtergracht 127 1018 WS Amsterdam, The Netherlands

Abstract In strongly stratified lakes, buoyant phytoplankton which can regulate their vertical position and remain in the euphotic zone have a distinct advantage over those species dependent on water turbulence for remaining in suspension. In more eutrophic waters gas-vacuolate cyanobacteria tend to dominate (Reynolds et al. 1987). Nevertheless, changing weather conditions can result in marked variations in epilimnetic turbulence which will affect biological processes, particularly where light attenuation is high. As the carbohydrate-content can be used as a probe of a cell's previous light history, an attempt was made to follow water movements in a eutrophic New Zealand lake using carbohydrate-to-protein ratios (C: P).

New Zealand Journal of Marine and Freshwater Research, 1987, Vol. 21: 529-530 0028-8330/87/2103-0529$2.50/0 © Crown copyright 1987 Received 13 March 1987; accepted 29 May 1987

PDF file of entire paper: medium quality (167K); (scanned from paper original: notes about this process)

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