The total of amino acid pools of three plant species common in Brullus Lake and belonging to different taxonomic groups were determined using LKB Alpha Plus high performance amino acid analyzer.The results indicated that presence of seventeen of common amino acids in these three different species, however, their concentrations varied.Glutamic acid represented the major constituent of amino acid pools separated from Inula erithmoides and Potamogeton pectinatus.Proline represented the major constituent of amino acid pool in Halimione portulacoides.The highest total content of amino acids was measured in , followed by Potamogeton pectinatus and Inula erithmoides.From the two sulphur containing amino acid: methionine and cysteine, only methionine was detected in all studied species.
Three plant species belonging to Compositae, Chenopodiceae and Potamogetonaceae were collected from Burullus Lake.Hydrocarbon, sterol and fatty acid composition of each species were investigated and identified quantitatively using GLC technique.The result demonstrated that, the unasaponifiable matter of Inula erithmoides Halimione portulacoides and Potamogeton pectinatus was composed of, respectively 74.7% hydrocarbons and 25.3% sterol compounds; 73.6% hydrocarbons and 26.5% sterol compounds;100% hydrocarbons.Two sterols, namely cholesterol and stigmasterol, were detected in extracts of Inula erithmoides and Halimione portulacoides but at different concentrations.The analysis of saturated and unsaturated fatty acids indicated that the species studied differed in the number and concentration of fatty acids.
The variations in distribution, species composition, biomass and water content of Entero-morpha spp. in the Gulf of Gdansk in relation to sampling stations and season are discussed. Only four Entero-morpha species were identified in the samples collected, the most frequent being E. intestinalis (L.) Link. The species composition was found to vary in relation to sampling stations and seasons. The abundance of Enteromorpha spp. varied at different stations with a maximum at Puck variations in biomass were observed. Although Enteromorpha spp. were characterised by a high water content (96.56?0.40% of WW), no statistically significant variations in the water contents of these species with respect to sampling stations could be detected. Although there was a tendency towards seasonal changes, these occurred within a narrow range.
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