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Issue 11, 2011
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Levels, sources and spatiotemporal variation of nutrients and micropollutants in small streams of a Mediterranean River basin

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Abstract

In this study, nutrients, trace metals and priority pesticide compounds were investigated for the first time in water and sediment samples in streams of the Evrotas River basin (S.E. Greece) from 2006 to 2008. The most important sources of contamination were from the entry of pesticides and nutrients into surface waters and sediments as a result of the intensive agricultural activity as well as from the uncontrolled disposal of olive mill and citrus processing wastewaters. Aquatic risk assessment revealed that all insecticides detected showed high risk, suggesting adverse effects on the stream biota. Among the metals analyzed, Cr, Ni and Ba presented the highest concentrations in sediments, however, due to natural geological processes. Multivariate statistical techniques applied for data compression, exploration and interpretation proved to be useful tools for identifying the most critical pollutants affecting the surface water quality. The findings of this study suggest that the inclusion of streams with small catchment areas into WFD monitoring and assessment programs is essential, especially those of the Mediterranean region.

Graphical abstract: Levels, sources and spatiotemporal variation of nutrients and micropollutants in small streams of a Mediterranean River basin

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Publication details

The article was received on 03 Aug 2011, accepted on 16 Aug 2011 and first published on 14 Sep 2011


Article type: Paper
DOI: 10.1039/C1EM10637F
Citation: J. Environ. Monit., 2011,13, 3064-3074

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    Levels, sources and spatiotemporal variation of nutrients and micropollutants in small streams of a Mediterranean River basin

    I. Karaouzas, D. A. Lambropoulou, N. T. Skoulikidis and T. A. Albanis, J. Environ. Monit., 2011, 13, 3064
    DOI: 10.1039/C1EM10637F

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