Abstract
This paper deals with the role of bicarbonates in the “apparent free space” (AFS) and their importance for the photosynthetic process. Both the littoral alga Fucus virsoides (Mediterranean Sea) and the sublittoral alga Laminaria saccharina (Baltic Sea) show the same response. Unloading of Clions and subsequent reloading of HCO3-ions result in a positive photosynthetic rate in distilled water (free of CO2). Time of exposure of an algal thallus to bicarbonate solutions, as well as the concentration of these solutions, influences “AFS-assimilation” of the ions.
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Blinks, L. R.: The effect of pH upon the photosynthesis of littoral marine algae. Protoplasma 57, 126–136 (1963).
Gessner, F. and L. Hammer: Exosmosis and “free space” in marine benthic algae. Mar. Biol. 2, 88–91 (1968).
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Communicated by O. Kinne, Hamburg
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Hammer, L. “Free space-photosynthesis” in the algae Fucus virsoides and Laminaria saccharina . Marine Biology 4, 136–138 (1969). https://doi.org/10.1007/BF00347038
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DOI: https://doi.org/10.1007/BF00347038