Saline Lakes pp 165-172 | Cite as

The photosynthesis of Dunaliella parva Lerche as a function of temperature, light and salinity

  • C. Jiménez
  • F. X. Niell
  • J. A. Fernández
Part of the Developments in Hydrobiology book series (DIHY, volume 59)

Abstract

The photosynthetic behaviour of Dunaliella parva Lerche from the athalassic lagoon of Fuente de Piedra (Malaga, Southern Spain) was studied experimentally at three NaCl concentrations (1, 2 and 3 M), five temperatures (15, 23, 31, 38 and 42 °C) and nine different irradiances between 82 and 891 mol m-2 s-l. Results are analyzed to define the best growing conditions for the algae.

D. parva shows the highest photosynthetic rates at a NaCl molarity of 2 M, under a moderate light intensity (600 mol m-2 s-1) at 31 °C. Above this light intensity a clear photoinhibition of the photosynthesis was found at 2 M and 3 M of NaCl. D. parva is a halotolerant and a thermoresistant species as evidenced by its net photosynthesis rate and positive values of oxygen evolution at 42 °C.

Two methods for modelling photosynthesis vs. irradiance curves are discussed. The first is a single model, based on third-order polynomial equations, and the second is double model, based on hyperbolical Michaelis-Menten type functions and negative exponential to define photoinhibition.

Keywords

Dunaliella parva net photosynthesis light temperature salinity 

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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • C. Jiménez
    • 1
  • F. X. Niell
    • 1
  • J. A. Fernández
    • 2
  1. 1.Departamento de Ecología, Facultad de CienciasUniversidad de MálagaMálagaSpain
  2. 2.Departamento de Fisiología Vegetal, Facultad de CienciasUniversidad de MálagaMálagaSpain

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