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The aerobic mineralization of amino acids in the saline Lake Grevelingen and the freshwater Haringvliet Basin (The Netherlands)
Sepers, A.B.J. (1981). The aerobic mineralization of amino acids in the saline Lake Grevelingen and the freshwater Haringvliet Basin (The Netherlands). Arch. Hydrobiol. 92(1): 114-129
In: Archiv für Hydrobiologie. Schweizerbart'sche Verlagsbuchhandlung: Stuttgart. ISSN 0003-9136, more
Peer reviewed article  

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Keywords
    Amino acids; Eutrophication; Mineralization; Oxygen consumption; Schizomycetes; ANE, Netherlands, Haringvliet [Marine Regions]; Netherlands, Grevelingen L. [Marine Regions]; Brackish water; Fresh water

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  • Sepers, A.B.J.

Abstract
    The bacterial uptake of several 14C-labelled amino acids and of a mixture of 14C-labelled amino acids (an algal protein hydrolysate) was measured during a one year period in the saline Lake Grevelingen and the more eutrophicated, freshwater Haringvliet basin in the Netherlands. The yearly uptake capacity as determined with the 14C-labelled amino acid mixture was only 2.8% (Lake Grevelingen) and 3.7% (Haringvliet) of the amount of mineralized carbon, as calculated from oxygen uptake experiments. These percentages are very low in view of the fact that 35 to 55% of the organic matter of phytoplankton and zooplankton consists of protein, and that the aerobic mineralization of amino acids is a very common property among the heterotrophic bacterial population.

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