Faecal coliforms and faecal streptococci community in the water of SidiChahed dam and these emissaries Mikkes and Mellah (Morocco): the importance of some environmental chemical factors

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Research Paper 01/06/2014
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Faecal coliforms and faecal streptococci community in the water of SidiChahed dam and these emissaries Mikkes and Mellah (Morocco): the importance of some environmental chemical factors

Smahane Mehanned, Abdelkader Chahlaoui, Abdelhamid Zaid, Mohamed Chahboune, Radouane EL Moustaine
J. Bio. Env. Sci.4( 6), 114-123, June 2014.
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A bacteriological and chemical study was carried out within 1 year, from December 2012 to November 2013, on sidiChahed dam and these emissaries Mikkes and Mellah upstream of the SidiChahed dam of Morocco. It assessed the importance of some chemical factors on some faecal bacterial communities. The monthly average densities of faecal coliforms and faecal streptococci varied, respectively, from 3 to 1820 CFU/100mL, and from 0 to 6734 CFU/100 mL of water. These bacterial abundances undergo spatio-temporal fluctuations. Most of the chemical characteristics of these waters are relatively stable with time, with respect to apparent spatial fluctuations. The degree of correlation between chemical parameters and the abundance dynamics of isolated bacteria is high heterogeneous. In our study constituted two wadi and dam, the increase in SDS, electrical conductivity not favored the abundance of faecal coliforms and faecal streptococci.The principal component analysis (PCA) showed that the indicator of fecal contamination have a significant negative correlation with pH, electrical conductivity and TDS and the high significant positive correlation with temperature.


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