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Light/Dark Cycle and Temperature‐Their Impact on Phosphate‐Limited Growth of Oscillatoria redekei V AN G OOR in Semicontinuous Culture
Author(s) -
Wernicke P.,
Nicklisch A.
Publication year - 1986
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19860710302
Subject(s) - phosphate , oscillatoria , zoology , growth rate , subsistence agriculture , mineralogy , mathematics , chemistry , thermodynamics , biology , ecology , physics , cyanobacteria , biochemistry , geometry , bacteria , genetics , agriculture
Phosphate‐limited growth of Oscillatoria redekei in semicontinuous culture has been studied under conditions of continuous illumination at 20 °C as well as in a 12/12 hours light‐dark cycle at temperatures between 5 °C and 20 °C. The subsistence quota ( q 0 ) amounted to 0.052 μmol mm −3 under all conditions, when the phosphate quota was expressed on the basis of cell volume. The interaction between temperature and phosphate quota and its impact on growth rate are described by the following model:Parameter values are t opt =24.5 °C, t min =0.95 °C, μ max =0.873 d −1 . The maximum phosphate quota was found to depend on temperature and to increase along with declining temperature.