Microorganisms Bioindicators of Water Quality

Salazar‐Sánchez, Margarita del Rosario; Arias-Hoyos, Arnol; Rodríguez-Alegría, Diana Carolina; Morales-Velazco, Sandra

doi:10.1007/978-981-19-4336-2_12

Cited by 3 publications

(3 citation statements)

References 48 publications

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“…Research highlights the pivotal importance of microbial community dynamics, evidenced by alterations in their structure and composition, in providing essential insights into the operational effectiveness of WWTPs [55,56]. The selective enrichment or depletion of microbial groups, prompted by the organic pollutant degradation process, results in shifts within the community structure, serving as an indicator of the treatment process's effectiveness [55,57,58]. Cryptomycotina, as observed in the current study, could serve as a bioindicator for treatment performance in the integrated treatment system.…”

Section: Dynamics Of Microeukaryotic Communities In the Stages Of An ...mentioning

confidence: 99%

“…The presence of enteric parasites from the Apicomplexa group in wastewater can be attributed to factors such as population density, individual water usage, and the persistence of the excreted stage (such as cysts or oocysts) in the wastewater environment, the presence of domestic animals (e.g., cats) in the vicinity [60,61]. Focusing on microbiological contaminants, it has been described that wastewater effluents may contain a significant concentration of several pathogens, including bacteria, viruses, protozoa, and helminths [57][58][59]. Among them, viruses and protozoa tend to be highly resistant to conventional disinfection treatments employed in WWTPs [62].…”

Section: Protozoa Taxa Across Wastewater Treatment Stages: Implicatio...mentioning

confidence: 99%

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Microeukaryotic communities diversity with a special emphasis on protozoa taxa in an integrated wastewater treatment system

Gad,

Yosri,

Fawzy

et al. 2024

Environ Sci Eur

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This study developed an integrated wastewater treatment system that combines an upflow anaerobic sludge blanket (UASB), downflow hanging non-woven fabric (DHNW), and anaerobic baffled reactor (ABR) to explore the effect of treatment stages on the diversity of microeukaryotic communities. This study aimed to bridge the knowledge gap regarding the influence of integrated system stages on microeukaryotic community diversity. Through 18S rRNA amplicon sequencing, we identified unique microeukaryotic communities across different stages, with the aerobic phase hosting 35.77% of unique amplicon sequence variants (ASVs). The results of principal component analysis (PCA) and non-multidimensional scale analysis (nMDS) demonstrated the significant influence of wastewater treatment on both environmental factors and the microeukaryotic communities. Ciliophora was notably abundant in the effluent (42.09%) and sludge (17.11%). The aerobic stage was dominated by Ochrophyta, a diverse group of algae instrumental in nutrient removal, such as nitrogen and phosphorus, through biological processes. A redundancy analysis (RDA) revealed a positive correlation between chemical and biochemical oxygen demand and Cryptomycotina, highlighting its potential as a bioindicator for treatment efficacy. The detection of protozoan species, such as Acanthamoeba castellanii and Vermamoeba vermiformis, in the outlet stage poses health risks, whereas Cryptosporidium sp. was found in both the inlet and aerobic stages but not in the outlet. Our study reveals the complex nature of microeukaryotic diversity in the wastewater treatment system and its implications for treatment performance and public health.

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Section: Dynamics Of Microeukaryotic Communities In the Stages Of An ...mentioning

confidence: 99%

Section: Protozoa Taxa Across Wastewater Treatment Stages: Implicatio...mentioning

confidence: 99%

Microeukaryotic communities diversity with a special emphasis on protozoa taxa in an integrated wastewater treatment system

Gad,

Yosri,

Fawzy

et al. 2024

Environ Sci Eur

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“…In this context, water quality is of great relevance and is measured according to different parameters through which the degree of alteration of natural qualities is quantified and classified for a specific use. According to Salazar et al (2023), the Water Quality Index (WQI) indicates the degree of contamination of the water on the sampling date and is expressed as a percentage of pure water; Thus, highly contaminated water will have a value close to or equal to 0%, while water in excellent condition will have a value of this index close to 100%. Some authors, such as Sharma & Chhipa (2012), mention that water quality can be classified as excellent, good, poor, very poor and unsuitable based on the ICA value.…”

Section: Introductionmentioning

confidence: 99%

Conservation of Lake Tlahuac-Xico, as a Natural Reserve Water Ecosystem and New Water Source for the Eastern Valley of Mexico, in Face of the Global Water Crisis

Mecalco,

Hilario,

Garduño

2024

JASR

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Water is a natural resource, of great relevance for health, essential for life, for the development of societies, economic growth, the preservation and conservation of the environment, and to achieve human well-being, sustainable development and world social peace. However, the production and consumption of goods and services has not only brought with it a greater demand for the liquid, but also a greater generation of wastewater, which is discharged without any prior treatment into surface water bodies and, as a result, many freshwater ecosystems. and marine areas show signs of degradation, which has reduced the quantity and quality of their environmental services, in addition to the irreparable loss of their biodiversity. In this research, the quality of the water stored in the new Lake Tlahuac-Xico was evaluated, which as a result of the consolidation of the aquitard due to the effect of pumping in the main underlying aquifer due to the extraction of water and derived from this topographic depression and subsidence. differentials caused by the exploitation of the aquifer through 14 wells for the supply of drinking water, gave rise to its formation, where surface water from runoff is stored, whose evolution and current form is controlled by the extension and geometry of a basalt flow, from the Sierra de Santa Catarina, located 50 m deep within the lacustrine sequence. The results showed a high contamination index, due to wastewater discharges from the Amecameca River, raw wastewater discharges from the Serpentino Canal and the Ixtayopan plant, and runoff from surrounding agricultural areas.

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Spatial Heterogeneity of Zooplankton Community in an Eutrophicated Tropical Estuary

Rosas,

Azevedo-Cutrim,

Cutrim

et al. 2024

Preprint

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The alpha diversity and environmental heterogeneity of zooplankton reflect the level of degradation in a macrotidal estuary on the Brazilian equatorial margin. Using the multimetric index (TRIX), we assessed the trophic state and its association with zooplankton composition, distribution, and environmental variables in a tropical estuary. The results showed that significant seasonal and sectoral environmental differences contributed to biological heterogeneity, with the second sector (SII) exhibiting the greatest impact, leading to decreased alpha diversity compared to that of the first sector (SI). Salinity, pH, SiO23, and NO2− exhibited significant seasonal and sectoral variations (p < 0.05). The community consisted of 74 taxa, with copepods (75.7%), mainly from Oithonidae and Paracalanidae, dominating species number. Overall, the community exhibited medium diversity, low richness, and heterogeneity. Beta diversity, calculated using PERMADISP and Jaccard dissimilarity, reflected environmental heterogeneity with significant seasonal differences and biological variability between rainy and dry periods. Indicator species analysis identified 15 taxa, including copepods such as Euterpina acutifrons and Clytemnestra scutellata. Of these, nine taxa (60%) were indicators for the SI, and six (40%) were indicators for the SII. This study underscores the importance of identifying environmental filters and indicator species to understand estuarine dynamics and assess ecosystem trophic states.

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Microorganisms Bioindicators of Water Quality

Cited by 3 publications

References 48 publications

Microeukaryotic communities diversity with a special emphasis on protozoa taxa in an integrated wastewater treatment system

Microeukaryotic communities diversity with a special emphasis on protozoa taxa in an integrated wastewater treatment system

Conservation of Lake Tlahuac-Xico, as a Natural Reserve Water Ecosystem and New Water Source for the Eastern Valley of Mexico, in Face of the Global Water Crisis

Spatial Heterogeneity of Zooplankton Community in an Eutrophicated Tropical Estuary

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