Issue |
Annls Limnol.
Volume 9, Number 3, 1973
|
|
---|---|---|
Page(s) | 183 - 192 | |
DOI | https://doi.org/10.1051/limn/1973003 | |
Published online | 16 June 2011 |
Phytoplancton et productivité primaire d'un lac d'altitude dans les Pyrénées. Analyse factorielle des correspondances appliquée aux relevés effectués dans le lac de Port-Bielh
Phytoplankton and primary production of a high lake in the Pyrenees: a factorial analysis of "correspondances" applied to data from Lake Port-Bielh
1
Laboratoire de Biologie Quantitative, Université Paul-Sabatier, 118, route de Narbonne, 31077 Toulouse Cedex
2
Laboratoire d'Hydrobiologie, Université Paul-Sabatier, 118, route de Narbonne, 31077 Toulouse Cedex
L'analyse factorielle des Correspondances montre que la lumière et les éléments dissous (CO29 PO4—P) sont, selon toute vraisemblance, les facteurs primordiaux responsables du cycle du phytoplancton et de la productivité primaire pélagique dans le lac de Port-Bielh (2 285 m). La diffusion des substances nutritives à partir des sédiments dépend du degré de stratification thermique du lac.
Abstract
A factorial analysis of "correspondances" shows that light and dissolved substances (CO29 PO4—P) are, according to ail probability, the prime factors responsible for the phytoplankton cycle and the pelagic primary production in Lake Port-Bielh (2 285 m). The diffusion of nutrients originating from the sediments depends on the degree of thermal stratification in the lake.
© Masson, 1973
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