|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
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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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.