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Bioassays : a comparative study of three parameters related to phosphorus bioavailability (yield, growth rate and intracellular concentration of phosphorus)

Published online by Cambridge University Press:  15 August 2009

M. Hanna  and
A. Dauta
M. Hanna
Affiliation:
Laboratoire d'Hydrobiologie, ERA 702 du C.N.R.S., Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse Cedex, France
A. Dauta
Affiliation:
Laboratoire d'Hydrobiologie, ERA 702 du C.N.R.S., Université Paul Sabatier, 118, route de Narbonne, 31062 Toulouse Cedex, France
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Abstract

Bioassays have been carried out with the green alga Scenedesmus crassus in order to elaborate a technique for evaluating phosphorus bioavailability. This was achieved by the use of three parameters related to the uptake of this element (yield, growth rate and intracellular concentration of phosphorus). Judging from the results obtained, the most reliable parameter is the yield. This parameter is well correlated with intracellular concentration of phosphorus which has the advantage of being measured after 10 days. Coupling these two parameters enables a sharper analysis of a wider array of samples and supplements the data provided.

Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 19 , Issue 1 , 1983 , pp. 59 - 66
Copyright
© Masson, 1983

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