“Free space-photosynthesis” in the algae Fucus virsoides and Laminaria saccharina |
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| Authors: | L Hammer |
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| Institution: | (1) Institut za Biologija Mora, Rovinj, Yugoslavia;(2) Institut für Meereskunde an der Universität Kiel (Botanische Abteilung), Kiel, Germany (FRG);(3) Present address: Eiderweg 8, 2301 Mielkendorf, Germany (FRG) |
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| 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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