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Utilization of various amino acids and carbohydrates by neustonic and planktonic bacteria isolated from coastal Lake Dołgie Wielkie was determined. The highest percentage of the bacteria inhabiting this lake used proline and glutamine. Considerably higher percentage of neustonic bacteria (FL, SL) than planktonic (SUB) bacteria in their metabolic processes prefered the tested amino acids. The highest...
For the period of 4 years, in quarter-time cycle, samples had been taken from surface microlayers and subsurface water of the lakes: Gardno, Jasień and Dołgie Wielkie, by two techniques (Garret net and glass plate). In each talked over layers we have analyzed contents of calcium, general alka-linity, conductance and water reaction (pH). We have also determined the ability of surface mi-crolayer to...
The paper presents the results of the study of abundance, production and respiration in surface layers and subsurface water in the coastal lake Dołgie Wielkie. Indicate that the total numbers of neustonic bacteria were higher than planktonic bacteria. The level of production and respiration rate were higher in the subsurface water than in surface layers. Bacterial abundance, production and respiration...
The paper presents studies on level hydrolytic activity of extracellular enzymes in the surface microlayer and subsurface water in the coastal lake Dołgie Wielkie. The ranking order of the potential enzyme activity rates in the studied water layers was as follows: aminopeptidase > lipase > α-glucosidase > β-glucosidase. The level of activity of all studied hydrolases was higher in the surface...
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