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<p>This study investigates the physicochemical and microbiological characteristics of El Shatt Lake, with a focus on quantifying and identifying culturable bacteria to assess environmental contamination. Water samples were collected from various sites and analyzed using classical methods, such as the Heterotrophic Plate Count (HPC), alongside advanced techniques like flow cytometry. A total of 14 bacterial families were isolated and identified, including <i>Escherichia coli</i> (202 ± 10.0 CFU/ml in S1 to 203 ± 13.0 CFU/ml in S4), <i>Pseudomonas spp.</i> (12 ± 6.0 CFU/ml in S2 to 75 ± 4.0 CFU/ml in S1 and S5), and <i>Salmonella spp.</i> (13 ± 2.0 CFU/ml in S5). Physicochemical analysis revealed significant spatial variations, with salinity ranging from 1.72% to 4.87%, pH levels from 7.65 to 8.25, and conductivity from 29.6 µs/cm to 78.47 µs/cm. The highest bacterial loads were recorded in sites S4 and S5, attributed to anthropogenic impacts. The study highlights localized contamination and potential public health risks, underscoring the importance of comprehensive environmental monitoring.</p> Graphical Abstract <p></p>

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Integrated Environmental Monitoring of El Shatt Lake: Exploring Microbial Diversity, Physicochemical Properties, and Ecosystem Resilience to Pollution

  • 期刊论文

  • 发表日期：

    2025年5月12日

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  • Djihad Chenna,
  • Hadia Hemmami,
  • Ilham Ben Amor,
  • Soumeia Zeghoud,
  • Hamza Zaoui,
  • Mohammed Messaoudi

摘要

This study investigates the physicochemical and microbiological characteristics of El Shatt Lake, with a focus on quantifying and identifying culturable bacteria to assess environmental contamination. Water samples were collected from various sites and analyzed using classical methods, such as the Heterotrophic Plate Count (HPC), alongside advanced techniques like flow cytometry. A total of 14 bacterial families were isolated and identified, including Escherichia coli (202 ± 10.0 CFU/ml in S1 to 203 ± 13.0 CFU/ml in S4), Pseudomonas spp. (12 ± 6.0 CFU/ml in S2 to 75 ± 4.0 CFU/ml in S1 and S5), and Salmonella spp. (13 ± 2.0 CFU/ml in S5). Physicochemical analysis revealed significant spatial variations, with salinity ranging from 1.72% to 4.87%, pH levels from 7.65 to 8.25, and conductivity from 29.6 µs/cm to 78.47 µs/cm. The highest bacterial loads were recorded in sites S4 and S5, attributed to anthropogenic impacts. The study highlights localized contamination and potential public health risks, underscoring the importance of comprehensive environmental monitoring.

Graphical Abstract