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Diffusion chamber studies of carbon flux from living algae to heterotrophic bacteria

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Abstract

The flux of recently photosynthetically fixed, dissolved organic carbon (PDOC) from phototrophs to heterotrophic microorganisms was measured directly in microplankton samples from Lake Kinneret using a diffusion chamber technique. The minimum amounts of PDOC incorporated into small <3 µm heterotrophs during a 12 h light period ranged from 0.8 to 38.4 µg (C) l-1, or from 0.2% to 6% of net primary productivity. Although quantitatively small in comparison with total photosynthetic fixation, this PDOC flux could yield about 2 to 3 × 106 bacterial cells.ml-1 daily. This experimental is consistent with previous estimates of algal PDOC release in this lake.

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Authors and Affiliations

  1. Kinneret Limnological Laboratory, P.O.B. 345, 14-102, Tiberias, Israel

    T. Berman & B. Kaplan

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  1. T. Berman
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  2. B. Kaplan
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Berman, T., Kaplan, B. Diffusion chamber studies of carbon flux from living algae to heterotrophic bacteria. Hydrobiologia 108, 127–134 (1984). https://doi.org/10.1007/BF00014872

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  • DOI: https://doi.org/10.1007/BF00014872

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