Editorial Board

Editor-in-Chief: Petre Gastescu, Hyperion University of Bucharest (Romania)
Managing Editor: Petre Bretcan, Valahia University of Targoviste (Romania)
Volume 8(1) / 2014
ISSN: 1844-6477 (print version)
ISSN: 2284-5305 (electronic version)

ASSESSMENT OF URBAN DEVELOPMENT IMPACT ON LIMNOLOGICAL SYSTEMS

Gabriela PAVELESCU¹, Luminita GHERVASE¹, Cristian I. IOJA², Dan SAVASTRU¹

¹National Institute of Research and Development for Optoelectronics INOE 2000, Magurele, Romania
²University of Bucharest, Centre for Environmental Research and Impact Studies, Bucharest, Romania Email gpavel@inoe.ro

Abstract

The aim of this study is to evaluate the human impact, in terms of organic matter distribution and chlorophyll found in representative lakes from Bucharest city. The water quality of these lakes was evaluated using fluorescence spectroscopy together with conductivity and pH. Fluorescence data, in the form tryptophan/humic acid ratio, was used to evaluate the humification degree and to evidence the level of microbial contaminations of water lakes. Graphical representation of fluorescence ratio, Chl-a intensity, conductivity and pH was used to divide the analyzed samples in two groups. A quality score of 0 or 1 was introduced to delimitate between good or poor water quality using threshold values. The use of quality scores was helpful in realisation of a water quality map with Bucharest’s lakes, indicating the limnological systems’ ecological state. The results showed that the analysis of chromophoric organic matter can be useful in identifying the negative human influence on urban lakes

Keywords: urban lake, water quality, dissolved organic matter, fluorescence spectroscopy

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